Garin Regional Park Weather
Park • San Francisco Bay Area
Garin Regional Park spreads over the hills above Mission Boulevard at the south end of Hayward, on land that was a 19th-century ranch. The East Bay Regional Park District runs it together with adjoining Dry Creek Pioneer. The combined block covers more than 5,800 acres of narrow valleys, rolling hills, and ridges with wide views over the bay. Cattle still graze the slopes, the Red Barn visitor center displays the area's ranching past, and Jordan Pond holds bass and bluegill.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Garin Regional Park weather today and through the year
It's 54°F at Garin Regional Park right now (feels like 48°F), with 9 mph wind and a comfort score of 76. Monday's forecast high at Garin Regional Park is 55°F, 9°F below the mid November normal of 64°F. The best window today is 9 AM to noon, at about 53°F with a 5 mph wind (comfort 58).
August is the warmest month at Garin Regional Park, with an average high of 83°F. January is the coldest, with an average low of 41°F. December is the wettest month (4.6 in.), out of about 23.2 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Garin Regional Park are September, August, and July. The best hours are usually 11 AM to 2 PM in September, noon to 3 PM in August, and noon to 3 PM in July.
Garin's ridges face west across Hayward toward the widest part of the South Bay, and they meet the afternoon sea breeze head-on. The ridgetops stay breezy and often cooler than the narrow valleys inside the park, which sit out of the wind and heat up on still summer afternoons.
Forecast updated November 15, 2026 at 4:00 AM PST. Climate figures come from NOAA 1991-2020 normals. Hourly patterns come from NOAA's HRRR hourly analysis from September 2014 to April 2026.
What to expect at Garin Regional Park in the next few days
No active National Weather Service alerts for this location.
Best time to go
The best window today is 9 AM to noon, at about 53°F with a 5 mph wind (comfort 58).
Hiking conditions
Best hiking day this week: Monday, with 9 daylight hours that are dry, 45 to 80°F, and under 18 mph wind. 4 of the next 7 days have at least 4 such hours.
Best day this week
Of the next 7 days, Friday looks best for Garin Regional Park, with a 60°F high and midday comfort near 77. Thursday looks weakest (47).
Rain
Next good chance of rain: today (84%, about 0.25 in.).
Live weather map
Weather around Garin Regional Park right now
Overcast and 54° at Garin Regional Park right now.
About the live weather map for Garin Regional Park
The map centers on Garin Regional Park and stacks fog, satellite clouds, and precipitation radar on one view. Clouds come from the GOES-West satellite and rain from NOAA radar, and both show current conditions. Fog comes from our HRRR-based fog model, and the slider steps through its forecast for the next 12 hours.
Dots mark nearby places with their current temperature, colored by comfort score. Use the layer buttons to turn any layer off, or open the full map for every destination in the region.
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Tip: Bay Area temperatures can change by 20 to 30°F over a short distance because of microclimates.
Garin Regional Park vs nearby places
Typical summer conditions compared with Garin Regional Park, from the same NOAA HRRR hourly record. The list shows the closest places, then nearby places whose climate differs the most.
| Place | Distance | Summer afternoons | Morning fog | Afternoon wind | Compared with Garin Regional Park |
|---|---|---|---|---|---|
| Union City | 2.6 mi | +2°F | 18% | 9 mph | less summer morning fog (18% vs 43% of morning hours) |
| Hayward | 4 mi | +1°F | 24% | 9 mph | less summer morning fog (24% vs 43% of morning hours) |
| Castro Valley | 5.5 mi | +2°F | 26% | 9 mph | less summer morning fog (26% vs 43% of morning hours) |
| Danville | 13.4 mi | +10°F | 3% | 8 mph | less summer morning fog (3% vs 43% of morning hours) and about 10°F warmer on summer afternoons |
| Mount Diablo State Park | 18.5 mi | +2°F | 4% | 10 mph | less summer morning fog (4% vs 43% of morning hours) and 3,501 ft higher |
| Black Diamond Mines Regional Preserve | 24.5 mi | +10°F | 2% | 14 mph | less summer morning fog (2% vs 43% of morning hours) and about 10°F warmer on summer afternoons |
Places with a climate like Garin Regional Park's
- Moraga (15 mi away): nearly the same temperatures every month
- Wildcat Canyon Regional Park (26 mi away): similar temperatures through the year
- North Berkeley (22 mi away): similar temperatures through the year
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Garin Regional Park climate comparisons mean
These cards compare recent conditions at Garin Regional Park with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available. Fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.
Positive and negative differences describe how Garin Regional Park departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.
Garin Regional Park weather by month
August is the warmest month at Garin Regional Park, with an average high of 83°F. January is the coldest, with an average low of 41°F. December is the wettest month (4.6 in.), out of about 23.2 in. a year. Morning fog peaks in July, when fog or low cloud covers 48% of the hours from 6 to 10 AM. August has the clearest middays, with clouds covering about 11% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Garin Regional Park are September, August, and July. The best hours are usually 11 AM to 2 PM in September, noon to 3 PM in August, and noon to 3 PM in July.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 57°F | 41°F | 4.4 in | 9 | 15% | 33% | 7 mph | 9.9 h | 55 |
| Feb | 59°F | 42°F | 4.3 in | 9 | 12% | 27% | 8 mph | 10.7 h | 59 |
| Mar | 64°F | 44°F | 3.4 in | 8 | 17% | 32% | 9 mph | 11.9 h | 60 |
| Apr | 67°F | 46°F | 1.7 in | 5 | 24% | 26% | 10 mph | 13.2 h | 68 |
| May | 72°F | 50°F | 0.8 in | 4 | 32% | 24% | 11 mph | 14.2 h | 72 |
| Jun | 78°F | 54°F | 0.2 in | 2 | 35% | 13% | 10 mph | 14.8 h | 83 |
| Jul | 82°F | 57°F | 0.0 in | 0 | 48% | 12% | 9 mph | 14.5 h | 88 |
| Aug | 83°F | 58°F | 0.0 in | 1 | 46% | 11% | 9 mph | 13.6 h | 90 |
| Sep | 82°F | 57°F | 0.1 in | 2 | 32% | 15% | 9 mph | 12.3 h | 91 |
| Oct | 75°F | 52°F | 1.1 in | 4 | 16% | 16% | 7 mph | 11.1 h | 83 |
| Nov | 64°F | 45°F | 2.5 in | 7 | 11% | 22% | 7 mph | 10.1 h | 68 |
| Dec | 57°F | 41°F | 4.6 in | 9 | 17% | 34% | 7 mph | 9.6 h | 54 |
Morning fog is the share of hours from 6 to 10 AM with fog or low cloud. Midday cloud is the average from 11 AM to 3 PM, and afternoon wind is the average from 1 to 5 PM. The highlighted rows are the most comfortable months.
In summer, recent daily NOAA readings at Garin Regional Park average about 8°F cooler than the 1991-2020 normals. The normals average over a wider area that also covers nearby terrain. Read the monthly highs as a rough range, and use the recent months below for what Garin Regional Park has actually seen.
What makes Garin Regional Park's weather different
When the fog burns off
11 AMwhen July fog usually thins (57% foggy at 8 AM)
Fog or low cloud covers Garin Regional Park in 57% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. November mornings are the least foggy (11%).
When the wind picks up
1 PMwhen afternoon wind builds, March–September
From March through September, wind at Garin Regional Park typically builds after 1 PM. In May it peaks around 5 PM, averaging 12 mph with 8% of those hours windy, while mornings average 5 mph.
Daylight
9.6–14.8 hof daylight, Dec to Jun
Days at Garin Regional Park range from about 9.6 hours in December to 14.8 hours in June. In mid-June the sun sets around 8:32 PM, and in mid-December around 4:56 PM.
Seasons at Garin Regional Park
- Warm seasonJun 29 – Sep 26 · highs 80°F+
The warm season lasts about 3 months, from Jun 29 to Sep 26, when the average high is 80°F or warmer. Highs peak around Aug 8 at about 83°F.
- Cool seasonNov 29 – Feb 26 · highs 61°F or lower
The cool season runs from Nov 29 to Feb 26, when the average high is 61°F or lower. The coldest nights come around Jan 1, with an average low near 41°F.
- Rainy seasonNov 9 – Apr 7 · 82% of the year's rain
The rainy season runs from Nov 9 to Apr 7, when a day has at least a 20% chance of measurable rain. That stretch brings 82% of the year's rain.
The dark line marks today. Season dates come from the smoothed daily NOAA 1991-2020 normals. Counting from Oct. 1, a typical year has its first inch of rain by Oct 29 and half of its annual total by Jan 25.
Days per year and extremes (Nov 1, 2024 to Oct 31, 2026)
This record runs from Nov 1, 2024 to Oct 31, 2026. Over this record, Garin Regional Park averaged 6 days a year at 90°F or hotter and no freezing nights. It averaged 15 days a year with at least half an inch of rain and 2 afternoons with wind of 20 mph or more at 2 PM. About 139 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Sep 9, 2026 (97°F) and the coldest night was Feb 20, 2026 (37°F). The wettest day was Nov 23, 2024 (1.71 in.), and the strongest 2 PM gust was 39 mph on Feb 4, 2025.
- 6days at 90°F or hotter
- 0nights at or below freezing
- 15days with ½ in. of rain or more
- 2afternoons with 20+ mph wind
- 139mornings with 3+ hours of fog or low cloud
- Hottest day97°FSep 9, 2026
- Coldest night37°FFeb 20, 2026
- Wettest day1.71 inNov 23, 2024
- Strongest 2 PM gust39 mphFeb 4, 2025
What shapes Garin Regional Park's weather
The marine layer is the sheet of low cloud that forms over the cold ocean and spreads inland on summer nights. When it is deep, low clouds that fill the Hayward flats overnight can bank against Garin's hills. The ridges can stay in mist after the town below has started to clear. On those mornings hikers walk up into the cloud rather than above it, unlike on the much higher summit of Mission Peak to the south.
Cold air pools in the park's valleys on clear, calm nights. Winter mornings at the bottom of the park can be near freezing while the ridges stay milder. The grass turns brown by early summer. Fall offshore winds, which blow from the hot interior toward the bay, bring the year's highest fire danger to these open slopes.
Tips for visiting Garin Regional Park
Bring cash for parking
Garin collects its vehicle fee when the kiosk is staffed, and the park takes cash only.
Leash dogs near cattle
Don't let dogs chase cattle, and leash them when passing a herd. Leashes are required in parking lots, picnic areas, and lawns.
Visit the Red Barn on summer Sundays
The barn visitor center opens Sundays from mid-June to early September, 10 a.m. to 4 p.m.
Fish Jordan Pond with a license
Anglers 16 and older need a state fishing license. The pond holds largemouth bass, bluegill, and sunfish.
Check the seasonal gate hours
Gates open at 8 a.m. and close as early as 6 p.m. in winter or as late as 9 p.m. in late spring and summer.
Garin Regional Park through the seasons
- Spring (March–May)
- Spring brings green hills and long evenings for ridge walks, with gates open until 9 p.m. by late spring.
- Summer (June–August)
- Gray mornings are possible against the hills, followed by breezy, sunny afternoons on the ridges and warm, still air in the valleys.
- Fall (September–October)
- September is nearly as warm as August, and the grass is at its driest. Offshore wind days call for fire caution.
- Winter (November–February)
- Rain turns the hills green and the unpaved trails muddy.
Activities and the weather that matters
- Ridge hiking: Clear mornings in spring and fall give the best bay views. Expect wind on the ridges most summer afternoons.
- Mountain biking: Many of the unpaved trails suit bikes. Ride when the ground is dry, and yield to horses.
- Fishing at Jordan Pond: Calm mornings and evenings are easiest from the pier, before or after the afternoon breeze.
- Kite flying: Garin has a kite field, and kite flying is listed among the park's activities. Breezy afternoons are the draw.
Official sources and current conditions
- East Bay Regional Park District: Garin
- East Bay Regional Park District: Dry Creek Pioneer
- East Bay Regional Park District: alerts and closures
- National Weather Service, San Francisco Bay Area forecast office
Numbers on this page come from NOAA data. The text draws on the official sources linked above.
Historical Climate Data
Long-term weather patterns and climate data
Data sources: Recent temperatures come from NOAA URMA and recent precipitation from NOAA Stage IV. Fog, cloud, wind, humidity, and sunshine come from NOAA HRRR, and long-term baselines from NOAA 1991-2020 climate normals.
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
🌟 Best Months to Visit
⚠️ Challenging Months
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| November 2024 | 81 | 61.6° / 47.6° | 6.6h | 2d | 2.6" | 20 |
| December 2024 | 72 | 59.8° / 47.7° | 4.7h | 6d | 5.51" | 12 |
| January 2025 | 83 | 58.9° / 44.3° | 7.1h | 1d | 0.19" | 23 |
| February 2025 | 76 | 59.7° / 46° | 6.5h | 3d | 5.89" | 14 |
| March 2025 | 80 | 60.2° / 46.4° | 7.9h | 9d | 2" | 17 |
| April 2025 | 87 | 64.5° / 48.4° | 9h | 9d | 0.37" | 23 |
| May 2025 | 89 | 69.1° / 51.1° | 11.2h | 11d | 0.26" | 24 |
| June 2025 | 89 | 69.8° / 52.1° | 11h | 14d | 0" | 26 |
| July 2025 | 87 | 71.3° / 55.1° | 10.4h | 23d | 0" | 27 |
| August 2025 | 89 | 76.3° / 57.4° | 10.3h | 14d | 0" | 28 |
| September 2025 | 88 | 76.2° / 60° | 8.9h | 11d | 0.08" | 25 |
| October 2025 | 87 | 70.3° / 54.9° | 7.7h | 8d | 1.92" | 22 |
| November 2025 | 79 | 63.6° / 50.8° | 6.3h | 6d | 3.7" | 18 |
| December 2025 | 71 | 58.1° / 45.9° | 5.1h | 7d | 3.62" | 10 |
| January 2026 | 81 | 60.8° / 47.4° | 6.6h | 3d | 3.79" | 22 |
| February 2026 | 78 | 62.3° / 49° | 6.5h | 7d | 4.36" | 16 |
| March 2026 | 93 | 73.5° / 54° | 9.6h | 3d | 0.05" | 27 |
| April 2026 | 82 | 65° / 50.6° | 8.4h | 12d | 4.57" | 19 |
| May 2026 | 88 | 68° / 52.4° | 11h | 12d | 0.42" | 24 |
| June 2026 | 90 | 72.4° / 55.2° | 11.4h | 13d | 0.02" | 29 |
| July 2026 | 88 | 73.4° / 56.8° | 10.2h | 18d | 0" | 29 |
| August 2026 | 89 | 75.4° / 57.1° | 10.4h | 16d | 0" | 30 |
| September 2026 | 91 | 74.6° / 57.1° | 9.7h | 9d | 0.14" | 28 |
| October 2026 | 90 | 74.3° / 56.2° | 8h | 2d | 0.37" | 28 |
Climate Trends
Average Temperature by Month
About the Garin Regional Park climate charts
The temperature chart compares average monthly highs and lows at Garin Regional Park, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.
Precipitation shows the total recorded or modeled rainfall for each month at Garin Regional Park. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.
Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns
Average local hour by month from 2014-09-30 to 2026-04-30
- Temperature: At Garin Regional Park, the warmest typical hour is 3 PM in August (76°F). The coldest is 7 AM in January (46°F).
- Fog: Fog or low cloud covers Garin Regional Park in 57% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. November mornings are the least foggy (11%).
- Wind: From March through September, wind at Garin Regional Park typically builds after 1 PM. In May it peaks around 5 PM, averaging 12 mph with 8% of those hours windy, while mornings average 5 mph.
- Cloud Cover: August middays are the clearest at Garin Regional Park (11% average cloud cover), and December middays are the cloudiest (34%).
- Solar Radiation: The strongest typical sun at Garin Regional Park comes at 1 PM in June, averaging 982 W/m².
How to read the hourly heatmaps for Garin Regional Park
This heatmap shows how average temperature at Garin Regional Park changes by hour and month. Read left to right for the seasons and top to bottom for the time of day. Warmer colors mark the usual afternoon peaks, and cooler colors show overnight and winter lows.
This heatmap shows when fog or low cloud is most likely at Garin Regional Park. Darker cells mark the months and hours when fog has been most common. They help separate overnight or morning fog from cloud that tends to linger into the afternoon.
This heatmap shows the typical hourly wind pattern at Garin Regional Park through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.
This heatmap shows average cloud cover at Garin Regional Park for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.
This heatmap shows the average solar radiation reaching Garin Regional Park by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.
Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage. The red marker shows the current month and hour.
How recent months compared at Garin Regional Park
- October 2026 recap: October 2026 at Garin Regional Park averaged a high of 74°F, 4°F warmer than October 2025 (70°F).
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 22.6 in. of rain to Garin Regional Park, 98% of the 23.2 in. normal.
Location Details
Garin Regional Park weather questions
Everything you need to know about weather and visiting Garin Regional Park
What is the weather like at Garin Regional Park today?
It's 54°F at Garin Regional Park right now, with a comfort score of 76 (great). Monday's forecast high at Garin Regional Park is 55°F, 9°F below the mid November normal of 64°F. The best window today is 9 AM to noon, at about 53°F with a 5 mph wind (comfort 58).
What is the best month to visit Garin Regional Park?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Garin Regional Park are September, August, and July. The best hours are usually 11 AM to 2 PM in September, noon to 3 PM in August, and noon to 3 PM in July. The warm season lasts about 3 months, from Jun 29 to Sep 26, when the average high is 80°F or warmer. Highs peak around Aug 8 at about 83°F.
What are the warmest and coldest months at Garin Regional Park?
August is the warmest month at Garin Regional Park, with an average high of 83°F. January is the coldest, with an average low of 41°F.
When does the fog burn off at Garin Regional Park?
Fog or low cloud covers Garin Regional Park in 57% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. November mornings are the least foggy (11%).
When is it windiest at Garin Regional Park?
From March through September, wind at Garin Regional Park typically builds after 1 PM. In May it peaks around 5 PM, averaging 12 mph with 8% of those hours windy, while mornings average 5 mph.
How much rain does Garin Regional Park get?
December is the wettest month (4.6 in.), out of about 23.2 in. a year. The rainy season runs from Nov 9 to Apr 7, when a day has at least a 20% chance of measurable rain. That stretch brings 82% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 22.6 in. of rain to Garin Regional Park, 98% of the 23.2 in. normal.
What kind of place is Garin Regional Park?
Garin Regional Park spreads over the hills above Mission Boulevard at the south end of Hayward, on land that was a 19th-century ranch. The East Bay Regional Park District runs it together with adjoining Dry Creek Pioneer. The combined block covers more than 5,800 acres of narrow valleys, rolling hills, and ridges with wide views over the bay. Cattle still graze the slopes, the Red Barn visitor center displays the area's ranching past, and Jordan Pond holds bass and bluegill.
What is Garin Regional Park weather like in November?
November at Garin Regional Park averages a high of 64°F and a low of 45°F, with 2.5 in. of rain over about 7 rainy days. About 11% of morning hours are foggy. Afternoon wind averages 7 mph.
More about Garin Regional Park weather
Guides that explain the weather here and nearby
Data sources and methods
- Monthly temperatures and precipitation: NOAA 1991-2020 normals.
- Fog, cloud, wind, sun, and comfort by hour and month: NOAA's HRRR hourly analysis from September 2014 to April 2026.
- Daily records and recent months: NOAA URMA and HRRR analyses, plus NOAA Stage IV precipitation.
- Nearby comparisons and regional rankings use the same hourly HRRR summaries for every destination in the region.
- Alerts: National Weather Service. Tides and ocean temperature: NOAA CO-OPS, where shown.
- All statements on this page are computed from these datasets, apart from the “What shapes the weather” guide, which cites its sources inline.
- East Bay Regional Park District, Garin and Dry Creek Pioneer Regional Parks (accessed 2026-10-27)
- East Bay Regional Park District, Dry Creek Pioneer Regional Park (accessed 2026-10-27)
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