Hayward Weather
Town • San Francisco Bay Area
Hayward stretches from the tidal marshes of its bay shoreline up to the peaks of its eastern hills. The old downtown sits on Mission Boulevard, where the flats meet the slope. It began with William Hayward's 1852 general store at A Street and Mission, and the Hayward Fault, whose southern segment ruptured in 1868, runs through the city. On the west, Hayward Regional Shoreline protects more than 1,800 acres of marsh. Above town, Garin and Dry Creek Pioneer regional parks hold over 5,800 acres of former ranchland with views across the bay.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Hayward weather today and through the year
It's 53°F at Hayward right now (feels like 50°F), with 5 mph wind and a comfort score of 77. Monday's forecast high at Hayward is 56°F, 9°F below the mid November normal of 65°F. The best window today is 9 AM to noon, at about 54°F with a 3 mph wind (comfort 58).
August is the warmest month at Hayward, with an average high of 82°F. December is the coldest, with an average low of 40°F. December is the wettest month (3.9 in.), out of about 19.8 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Hayward are September, August, and June. The best hours are usually 11 AM to 2 PM in September, 11 AM to 2 PM in August, and 11 AM to 2 PM in June.
Hayward faces a wide, shallow part of the bay, across from the San Mateo shore. Its flat western half is mostly marsh, former salt ponds, and low industrial land. Summer marine air reaches it after a long run over the water, so some mornings start gray. The cloud deck tends to be thinner and to break earlier than on shorelines closer to the Golden Gate. Afternoons bring a steady west wind across the marshes.
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 Hayward 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 54°F with a 3 mph wind (comfort 58).
Best day this week
Of the next 7 days, Friday looks best for Hayward, with a 61°F high and midday comfort near 81. Thursday looks weakest (47).
Rain
Next good chance of rain: today (80%, about 0.26 in.).
Live weather map
Weather around Hayward right now
Overcast and 53° at Hayward right now.
About the live weather map for Hayward
The map centers on Hayward 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.
Hayward vs nearby places
Typical summer conditions compared with Hayward, 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 Hayward |
|---|---|---|---|---|---|
| Castro Valley | 1.8 mi | +2°F | 26% | 9 mph | a very similar climate |
| Garin Regional Park | 4 mi | -1°F | 43% | 10 mph | more summer morning fog (43% vs 24% of morning hours) |
| Anthony Chabot Regional Park | 5.5 mi | -1°F | 39% | 10 mph | more summer morning fog (39% vs 24% of morning hours) |
| Pacifica | 22.5 mi | -18°F | 56% | 9 mph | about 18°F cooler on summer afternoons and more summer morning fog (56% vs 24% of morning hours) |
| Baker Beach | 23.6 mi | -17°F | 45% | 16 mph | about 17°F cooler on summer afternoons and windier summer afternoons (16 vs 9 mph) |
| Ocean Beach | 24.3 mi | -18°F | 49% | 11 mph | about 18°F cooler on summer afternoons and more summer morning fog (49% vs 24% of morning hours) |
Places with a climate like Hayward's
- American Canyon (36 mi away): nearly the same temperatures every month
- Mission Peak Regional Preserve (15 mi away): similar temperatures through the year
- Sonoma (48 mi away): similar temperatures through the year
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Hayward climate comparisons mean
These cards compare recent conditions at Hayward 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 Hayward 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.
Hayward weather by month
August is the warmest month at Hayward, with an average high of 82°F. December is the coldest, with an average low of 40°F. December is the wettest month (3.9 in.), out of about 19.8 in. a year. Morning fog peaks in July, when fog or low cloud covers 27% of the hours from 6 to 10 AM. August has the clearest middays, with clouds covering about 15% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Hayward are September, August, and June. The best hours are usually 11 AM to 2 PM in September, 11 AM to 2 PM in August, and 11 AM to 2 PM in June.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 58°F | 40°F | 3.8 in | 8 | 12% | 33% | 5 mph | 9.8 h | 61 |
| Feb | 62°F | 43°F | 3.7 in | 8 | 10% | 27% | 7 mph | 10.7 h | 64 |
| Mar | 65°F | 45°F | 2.9 in | 7 | 12% | 32% | 8 mph | 11.9 h | 66 |
| Apr | 69°F | 46°F | 1.5 in | 5 | 11% | 25% | 9 mph | 13.2 h | 75 |
| May | 74°F | 50°F | 0.7 in | 3 | 12% | 26% | 10 mph | 14.2 h | 78 |
| Jun | 80°F | 53°F | 0.1 in | 2 | 21% | 16% | 9 mph | 14.8 h | 90 |
| Jul | 82°F | 56°F | 0.0 in | 0 | 27% | 15% | 9 mph | 14.5 h | 90 |
| Aug | 82°F | 56°F | 0.0 in | 1 | 24% | 15% | 9 mph | 13.6 h | 91 |
| Sep | 82°F | 54°F | 0.1 in | 2 | 16% | 17% | 8 mph | 12.3 h | 92 |
| Oct | 76°F | 51°F | 0.9 in | 4 | 11% | 18% | 7 mph | 11.1 h | 85 |
| Nov | 65°F | 44°F | 2.0 in | 6 | 10% | 22% | 5 mph | 10.1 h | 77 |
| Dec | 58°F | 40°F | 3.9 in | 8 | 14% | 34% | 5 mph | 9.6 h | 59 |
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 Hayward average about 7°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 Hayward has actually seen.
What makes Hayward's weather different
When the fog burns off
11 AMwhen July fog usually thins (36% foggy at 8 AM)
Fog or low cloud covers Hayward in 36% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. February mornings are the least foggy (10%).
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Hayward typically builds after 1 PM. In May it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 4 mph.
Daylight
9.6–14.8 hof daylight, Dec to Jun
Days at Hayward 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 Hayward
- Warm seasonJun 26 – Sep 26 · highs 80°F+
The warm season lasts about 3.1 months, from Jun 26 to Sep 26, when the average high is 80°F or warmer. Highs peak around Aug 8 at about 82°F.
- Cool seasonNov 28 – Feb 26 · highs 63°F or lower
The cool season runs from Nov 28 to Feb 26, when the average high is 63°F or lower. The coldest nights come around Dec 8, with an average low near 40°F.
- Rainy seasonNov 16 – Mar 31 · 77% of the year's rain
The rainy season runs from Nov 16 to Mar 31, when a day has at least a 20% chance of measurable rain. That stretch brings 77% 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 Nov 2 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, Hayward averaged 9 days a year at 90°F or hotter and no freezing nights. It averaged 14 days a year with at least half an inch of rain and 1 afternoon with wind of 20 mph or more at 2 PM. About 82 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Sep 9, 2026 (99°F) and the coldest night was Dec 13, 2025 (37°F). The wettest day was Apr 21, 2026 (1.72 in.), and the strongest 2 PM gust was 40 mph on Mar 12, 2025.
- 9days at 90°F or hotter
- 0nights at or below freezing
- 14days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 82mornings with 3+ hours of fog or low cloud
- Hottest day99°FSep 9, 2026
- Coldest night37°FDec 13, 2025
- Wettest day1.72 inApr 21, 2026
- Strongest 2 PM gust40 mphMar 12, 2025
What shapes Hayward's weather
Hayward's hills rise abruptly behind downtown, so conditions change within a short drive. The marine layer is the low sheet of fog and cloud that moves in from the ocean. Neighborhoods that climb east of Mission Boulevard sit closer to its base. On mornings when that cloud is deep, the hill streets can be in the gray while the flats sit under a high, dry ceiling. They also take more wind when the sea breeze peaks. Over the ridge, Castro Valley is more sheltered and slightly warmer.
Early boosters called the area the Heart of the Garden of Eden for its climate and soil. The bay is the reason, because it keeps winter nights from getting very cold and summer days from getting very hot. The warmest afternoons come from midsummer into early fall, and they peak when the sea breeze weakens. On those days, offshore wind blowing from inland toward the bay dries the grassy hills. The city names wildfire in its eastern hills and sea level rise on its shoreline as everyday climate risks.
Tips for visiting Hayward
Walk the shoreline in the morning
Hayward Regional Shoreline has five miles of graveled bayside trails, and its gates open from 7 a.m. to 5 p.m. year-round. Mornings are usually calmer than afternoons.
Start downtown at A Street and Mission
William Hayward opened his general store there in 1852, and the town that grew around it was incorporated in 1876.
Keep dogs north of the channel
Dogs aren't allowed south of the West Winton Avenue flood control channel at the shoreline, to protect wildlife.
Leash up around cattle in the hills
Cattle graze at Garin and Dry Creek. Heel or leash your dog when cattle are ahead until you pass them.
Hayward through the seasons
- Spring (March–May)
- The hills at Garin and Dry Creek are green and the marshes are busy with birds. The afternoon west wind returns to the shoreline by late spring.
- Summer (June–August)
- Afternoons are breezy on the flats, and some mornings start gray. The hill neighborhoods can stay in cloud longer on deep marine-layer days.
- Fall (September–October)
- September is as warm as midsummer, and fall mornings are rarely gray. When offshore wind blows, the dry eastern hills carry the city's highest wildfire risk.
- Winter (November–February)
- Winter is the rainy season. Storms can damage hill trails and leave them muddy.
Activities and the weather that matters
- Birdwatching: Cogswell, Hayward, and Oro Loma marshes are best on calm mornings, before the afternoon wind makes scopes shake.
- Hiking at Garin and Dry Creek: Spring is the best season on these open grassy hills. Summer afternoons in full sun get hot, and winter storms leave trails muddy.
- Fishing at Jordan Pond: The pier at Garin's Jordan Pond holds bass, bluegill, and sunfish. Mild, still mornings are best.
- Shoreline biking: Flat gravel levees make for easy riding, but a headwind off the bay makes the ride much harder on summer afternoons.
Official sources and current conditions
- East Bay Regional Park District: Hayward Regional Shoreline
- East Bay Regional Park District: Garin Regional Park
- City of Hayward: Emergency and safety
- City of Hayward: Climate change adaptation
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 | 83 | 63.3° / 47.7° | 6.2h | 3d | 2.3" | 20 |
| December 2024 | 74 | 61° / 47.4° | 5h | 5d | 4.94" | 12 |
| January 2025 | 85 | 60.5° / 44° | 7.1h | 3d | 0.16" | 24 |
| February 2025 | 78 | 61.8° / 46° | 6.5h | 1d | 5.2" | 16 |
| March 2025 | 84 | 62.6° / 47.2° | 8.2h | 2d | 1.6" | 22 |
| April 2025 | 91 | 66.5° / 49.7° | 9.3h | 1d | 0.26" | 25 |
| May 2025 | 93 | 71° / 52.7° | 11.4h | 1d | 0.25" | 30 |
| June 2025 | 92 | 70.7° / 53.6° | 11.2h | 6d | 0" | 29 |
| July 2025 | 91 | 72.1° / 56.7° | 10.5h | 7d | 0" | 30 |
| August 2025 | 90 | 77.3° / 58.9° | 10h | 9d | 0" | 30 |
| September 2025 | 90 | 77.4° / 61.3° | 8.7h | 1d | 0.13" | 28 |
| October 2025 | 89 | 71.9° / 55.8° | 7.8h | 3d | 1.67" | 25 |
| November 2025 | 80 | 65.3° / 50.9° | 6h | 5d | 3.45" | 19 |
| December 2025 | 73 | 59.1° / 45.6° | 5.1h | 4d | 3.26" | 12 |
| January 2026 | 82 | 62.9° / 46.3° | 6.8h | 3d | 3.44" | 22 |
| February 2026 | 79 | 64.1° / 48.7° | 6.6h | 6d | 3.81" | 18 |
| March 2026 | 94 | 76.1° / 54° | 9.6h | 3d | 0.06" | 30 |
| April 2026 | 86 | 67.1° / 51.6° | 8.7h | 2d | 4.5" | 23 |
| May 2026 | 91 | 69.8° / 53.6° | 10.5h | 3d | 0.44" | 29 |
| June 2026 | 93 | 73.7° / 56.4° | 11.6h | 8d | 0.03" | 30 |
| July 2026 | 91 | 74.3° / 58.1° | 10.7h | 6d | 0" | 31 |
| August 2026 | 90 | 75.9° / 58.4° | 10.1h | 9d | 0" | 31 |
| September 2026 | 91 | 75.9° / 58.2° | 9.6h | 6d | 0.12" | 28 |
| October 2026 | 90 | 75.4° / 55.6° | 7.9h | 3d | 0.36" | 28 |
Climate Trends
Average Temperature by Month
About the Hayward climate charts
The temperature chart compares average monthly highs and lows at Hayward, 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 Hayward. 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 Hayward, the warmest typical hour is 3 PM in September (77°F). The coldest is 7 AM in January (45°F).
- Fog: Fog or low cloud covers Hayward in 36% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. February mornings are the least foggy (10%).
- Wind: From February through October, wind at Hayward typically builds after 1 PM. In May it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 4 mph.
- Cloud Cover: August middays are the clearest at Hayward (15% average cloud cover), and December middays are the cloudiest (34%).
- Solar Radiation: The strongest typical sun at Hayward comes at 1 PM in July, averaging 957 W/m².
How to read the hourly heatmaps for Hayward
This heatmap shows how average temperature at Hayward 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 Hayward. 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 Hayward 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 Hayward 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 Hayward 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 Hayward
- October 2026 recap: October 2026 at Hayward averaged a high of 75°F, 4°F warmer than October 2025 (72°F).
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 20.8 in. of rain to Hayward, 105% of the 19.8 in. normal.
Location Details
Hayward weather questions
Everything you need to know about weather and visiting Hayward
What is the weather like at Hayward today?
It's 53°F at Hayward right now, with a comfort score of 77 (great). Monday's forecast high at Hayward is 56°F, 9°F below the mid November normal of 65°F. The best window today is 9 AM to noon, at about 54°F with a 3 mph wind (comfort 58).
What is the best month to visit Hayward?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Hayward are September, August, and June. The best hours are usually 11 AM to 2 PM in September, 11 AM to 2 PM in August, and 11 AM to 2 PM in June. The warm season lasts about 3.1 months, from Jun 26 to Sep 26, when the average high is 80°F or warmer. Highs peak around Aug 8 at about 82°F.
What are the warmest and coldest months at Hayward?
August is the warmest month at Hayward, with an average high of 82°F. December is the coldest, with an average low of 40°F.
When does the fog burn off at Hayward?
Fog or low cloud covers Hayward in 36% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. February mornings are the least foggy (10%).
When is it windiest at Hayward?
From February through October, wind at Hayward typically builds after 1 PM. In May it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 4 mph.
How much rain does Hayward get?
December is the wettest month (3.9 in.), out of about 19.8 in. a year. The rainy season runs from Nov 16 to Mar 31, when a day has at least a 20% chance of measurable rain. That stretch brings 77% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 20.8 in. of rain to Hayward, 105% of the 19.8 in. normal.
What kind of place is Hayward?
Hayward stretches from the tidal marshes of its bay shoreline up to the peaks of its eastern hills. The old downtown sits on Mission Boulevard, where the flats meet the slope. It began with William Hayward's 1852 general store at A Street and Mission, and the Hayward Fault, whose southern segment ruptured in 1868, runs through the city. On the west, Hayward Regional Shoreline protects more than 1,800 acres of marsh. Above town, Garin and Dry Creek Pioneer regional parks hold over 5,800 acres of former ranchland with views across the bay.
What is Hayward weather like in November?
November at Hayward averages a high of 65°F and a low of 44°F, with 2.0 in. of rain over about 6 rainy days. About 10% of morning hours are foggy. Afternoon wind averages 5 mph.
More about Hayward 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, Hayward Regional Shoreline (accessed 2026-10-27)
- East Bay Regional Park District, Garin Regional Park (accessed 2026-10-27)
- City of Hayward, Climate change adaptation (accessed 2026-10-27)
- City of Hayward, Hayward history (accessed 2026-10-27)
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