Newark Weather
Town • San Francisco Bay Area
Newark is a small city almost at sea level on the bay side of Fremont, and it incorporated in 1955. Its western edge runs out into industrial salt ponds, tidal wetlands, and the open South Bay. The Coyote Hills and the Fremont headquarters of the Don Edwards San Francisco Bay National Wildlife Refuge sit just beyond its northwest corner. It is the smallest of the three Tri-City towns, with Fremont and Union City.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Newark weather today and through the year
It's 54°F at Newark right now (feels like 51°F), with 8 mph wind and a comfort score of 78. Monday's forecast high at Newark is 56°F, 9°F below the mid November normal of 65°F. The best window today is 9 AM to noon, at about 55°F with a 7 mph wind (comfort 57).
August is the warmest month at Newark, with an average high of 78°F. December is the coldest, with an average low of 42°F. February is the wettest month (3.1 in.), out of about 15.5 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Newark are September, August, and June. The best hours are usually 11 AM to 2 PM in September, noon to 3 PM in August, and 11 AM to 2 PM in June.
Only salt ponds and marsh separate Newark from the bay. The cool afternoon breeze that travels down the South Bay from the Golden Gate reaches it before anywhere farther inland. That breeze makes Newark one of the mildest places in the southeast bay on summer afternoons. It is usually cooler than Mission San Jose or Milpitas, which sit against the eastern hills.
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 Newark 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 55°F with a 7 mph wind (comfort 57).
Best day this week
Of the next 7 days, Friday looks best for Newark, with a 62°F high and midday comfort near 81. Thursday looks weakest (50).
Rain
Next good chance of rain: today (86%, about 0.28 in.).
Live weather map
Weather around Newark right now
Overcast and 54° at Newark right now.
About the live weather map for Newark
The map centers on Newark 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.
Newark vs nearby places
Typical summer conditions compared with Newark, 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 Newark |
|---|---|---|---|---|---|
| Don Edwards Wildlife Refuge | 2.1 mi | -10°F | 18% | 16 mph | about 10°F cooler on summer afternoons and windier summer afternoons (16 vs 11 mph) |
| Fremont | 3.1 mi | +5°F | 17% | 9 mph | about 5°F warmer on summer afternoons |
| Coyote Hills Regional Park | 3.2 mi | -10°F | 21% | 14 mph | about 10°F cooler on summer afternoons |
| Purisima Creek Redwoods | 18.7 mi | -8°F | 57% | 7 mph | about twice as much rain a year and more summer morning fog (57% vs 20% of morning hours) |
| Half Moon Bay | 21.8 mi | -9°F | 64% | 8 mph | more summer morning fog (64% vs 20% of morning hours) and about 60% more rain a year |
| Claremont District | 25 mi | -3°F | 56% | 9 mph | more summer morning fog (56% vs 20% of morning hours) and about 77% more rain a year |
Places with a climate like Newark's
- San Leandro (15 mi away): similar temperatures through the year
- Vallejo (41 mi away): similar temperatures through the year
- Orinda (25 mi away): similar temperatures through the year
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Newark climate comparisons mean
These cards compare recent conditions at Newark 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 Newark 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.
Newark weather by month
August is the warmest month at Newark, with an average high of 78°F. December is the coldest, with an average low of 42°F. February is the wettest month (3.1 in.), out of about 15.5 in. a year. Morning fog peaks in July, when fog or low cloud covers 24% of the hours from 6 to 10 AM. July 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 Newark are September, August, and June. The best hours are usually 11 AM to 2 PM in September, noon to 3 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 | 59°F | 42°F | 3.0 in | 7 | 12% | 32% | 6 mph | 9.9 h | 59 |
| Feb | 62°F | 44°F | 3.1 in | 7 | 11% | 25% | 8 mph | 10.8 h | 61 |
| Mar | 65°F | 46°F | 2.4 in | 7 | 10% | 30% | 9 mph | 11.9 h | 65 |
| Apr | 68°F | 48°F | 1.1 in | 5 | 9% | 23% | 10 mph | 13.2 h | 73 |
| May | 72°F | 51°F | 0.5 in | 3 | 11% | 21% | 11 mph | 14.2 h | 76 |
| Jun | 77°F | 54°F | 0.1 in | 1 | 15% | 11% | 12 mph | 14.7 h | 89 |
| Jul | 78°F | 57°F | 0.0 in | 0 | 24% | 11% | 11 mph | 14.5 h | 88 |
| Aug | 78°F | 57°F | 0.0 in | 1 | 22% | 11% | 11 mph | 13.6 h | 90 |
| Sep | 78°F | 56°F | 0.1 in | 1 | 16% | 14% | 10 mph | 12.3 h | 91 |
| Oct | 74°F | 52°F | 0.7 in | 3 | 13% | 16% | 8 mph | 11.1 h | 84 |
| Nov | 65°F | 46°F | 1.5 in | 5 | 11% | 21% | 6 mph | 10.1 h | 75 |
| Dec | 59°F | 42°F | 3.0 in | 7 | 16% | 33% | 5 mph | 9.6 h | 56 |
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.
What makes Newark's weather different
When the fog burns off
11 AMwhen July fog usually thins (33% foggy at 8 AM)
Fog or low cloud covers Newark in 33% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (9%).
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Newark typically builds after 1 PM. In June it peaks around 4 PM, averaging 13 mph with 20% of those hours windy, while mornings average 4 mph.
Microclimate
−10°FCoyote Hills Regional Park, 3.2 mi away, on summer afternoons
Coyote Hills Regional Park, 3.2 miles away, runs about 10°F cooler than Newark on summer afternoons.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Newark range from about 9.6 hours in December to 14.7 hours in June. In mid-June the sun sets around 8:29 PM, and in mid-December around 4:56 PM.
Seasons at Newark
- Warm seasonJun 8 – Sep 27 · highs 77°F+
The warm season lasts about 3.7 months, from Jun 8 to Sep 27, when the average high is 77°F or warmer. Highs peak around Aug 8 at about 78°F.
- Cool seasonNov 29 – Feb 25 · highs 63°F or lower
The cool season runs from Nov 29 to Feb 25, when the average high is 63°F or lower. The coldest nights come around Dec 8, with an average low near 42°F.
- Rainy seasonDec 1 – Mar 21 · 69% of the year's rain
The rainy season runs from Dec 1 to Mar 21, when a day has at least a 20% chance of measurable rain. That stretch brings 69% 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 7 and half of its annual total by Jan 27.
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, Newark averaged 3 days a year at 90°F or hotter and no freezing nights. It averaged 7 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 75 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Jun 11, 2026 (94°F) and the coldest night was Feb 9, 2025 (34°F). The wettest day was Feb 5, 2025 (1.03 in.), and the strongest 2 PM gust was 41 mph on Feb 4, 2025.
- 3days at 90°F or hotter
- 0nights at or below freezing
- 7days with ½ in. of rain or more
- 2afternoons with 20+ mph wind
- 75mornings with 3+ hours of fog or low cloud
- Hottest day94°FJun 11, 2026
- Coldest night34°FFeb 9, 2025
- Wettest day1.03 inFeb 5, 2025
- Strongest 2 PM gust41 mphFeb 4, 2025
What shapes Newark's weather
Newark's flat, open bay edge makes it breezy. The salt ponds give the wind a long run with nothing to slow it, so late afternoons near the shoreline can feel brisk even in July. Streets near the Fremont line feel calmer and a little warmer.
On clear, still winter nights, cold air settles over the flat ground and the wet marshes. Shallow fog can form along the bay edge by dawn while the hills above Fremont stay clear. Much of the bayfront was once wetland, and low ground near the salt ponds can flood for a time during big storms. Rising sea level adds to that risk.
Tips for visiting Newark
Walk the Tidelands Trail at the refuge
This loop of 1 to 1.4 miles near the refuge visitor center crosses a tidal slough, a salt pond, and salt marsh. It is the only refuge trail where leashed dogs are allowed.
Plan a weekend stop at the visitor center
The refuge visitor center opens Saturday and Sunday from 10 a.m. to 2 p.m., and the trails are open sunrise to sunset.
Pack a windbreaker for the shoreline
A warm afternoon in town can feel cool on the open levees once the bay breeze picks up.
Reach the creek trail from town
The Alameda Creek Regional Trail is reachable from several Newark streets and runs to the bay. Cyclists use the trail on the south levee, and riders on horseback use the north one.
Newark through the seasons
- Spring (March–May)
- Spring is bright and often breezy, with the marshes at their greenest after winter rain. The afternoon wind off the bay builds through May.
- Summer (June–August)
- Summer is mild by southeast-bay standards. Afternoons are often the coolest in the Tri-City area and windy near the water.
- Fall (September–October)
- September stays as warm as summer, and the afternoon breeze eases through October. These are good weeks for long walks along the bay edge.
- Winter (November–February)
- Winter is the rainy season. Low bayfront ground near the salt ponds can flood temporarily during storms, and residents worry about sea-level rise here.
Activities and the weather that matters
- Birdwatching: Shorebirds and grebes fill the Tidelands pond in winter, and Forster's terns and avocets take over in summer. Calm mornings beat windy afternoons.
- Cycling the bay edge: The 3.5-mile paved Bayview Trail at Coyote Hills and the Alameda Creek Trail both hug the bay edge, so wind is the main factor. Ride before the afternoon breeze arrives.
- Walking the levees: The levees have no shade and plenty of wind. Overcast or cool days work fine with a layer, and on hot, calm days go early.
Official sources and current conditions
- U.S. Fish and Wildlife Service: Don Edwards refuge, visit us
- East Bay Regional Park District: Coyote Hills
- East Bay Regional Park District: Alameda Creek Regional Trail
- 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 | 82 | 62.8° / 46.1° | 6.4h | 1d | 1.5" | 23 |
| December 2024 | 74 | 60.5° / 45.5° | 4.9h | 6d | 2.76" | 13 |
| January 2025 | 84 | 59.6° / 41.2° | 7.1h | 1d | 0.08" | 23 |
| February 2025 | 78 | 61.5° / 44.6° | 6.5h | 1d | 3.57" | 17 |
| March 2025 | 85 | 62.5° / 46.9° | 8.5h | 2d | 1.5" | 22 |
| April 2025 | 90 | 66.4° / 49.6° | 9.4h | 3d | 0.37" | 26 |
| May 2025 | 93 | 70.8° / 52.5° | 11.7h | 1d | 0.11" | 31 |
| June 2025 | 92 | 70.6° / 54.4° | 12.2h | 2d | 0" | 30 |
| July 2025 | 88 | 71.8° / 57.6° | 11.3h | 9d | 0" | 30 |
| August 2025 | 89 | 76.1° / 59.2° | 10.7h | 7d | 0" | 29 |
| September 2025 | 88 | 76.7° / 61.8° | 9.1h | 6d | 0.04" | 26 |
| October 2025 | 88 | 71.3° / 54.6° | 7.9h | 4d | 1.4" | 23 |
| November 2025 | 79 | 64.2° / 49.9° | 6.5h | 8d | 2.26" | 15 |
| December 2025 | 73 | 58.5° / 45.4° | 5.2h | 8d | 2" | 7 |
| January 2026 | 80 | 61.4° / 43.7° | 6.8h | 3d | 2.38" | 23 |
| February 2026 | 79 | 63.6° / 47° | 6.6h | 6d | 2.51" | 18 |
| March 2026 | 94 | 74.1° / 51.5° | 9.5h | 1d | 0" | 30 |
| April 2026 | 86 | 67.2° / 51.3° | 8.5h | 3d | 2.06" | 23 |
| May 2026 | 91 | 69.8° / 53.7° | 11.4h | 4d | 0.34" | 30 |
| June 2026 | 92 | 73.8° / 57.1° | 11.9h | 4d | 0" | 29 |
| July 2026 | 90 | 74.1° / 58.7° | 11.1h | 4d | 0" | 29 |
| August 2026 | 88 | 74.6° / 59.2° | 10.5h | 9d | 0" | 29 |
| September 2026 | 92 | 75.4° / 57.7° | 9.8h | 5d | 0.03" | 28 |
| October 2026 | 90 | 73.6° / 53.9° | 8.2h | 4d | 0.12" | 29 |
Climate Trends
Average Temperature by Month
About the Newark climate charts
The temperature chart compares average monthly highs and lows at Newark, 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 Newark. 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 Newark, the warmest typical hour is 3 PM in September (74°F). The coldest is 7 AM in January (45°F).
- Fog: Fog or low cloud covers Newark in 33% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (9%).
- Wind: From February through October, wind at Newark typically builds after 1 PM. In June it peaks around 4 PM, averaging 13 mph with 20% of those hours windy, while mornings average 4 mph.
- Cloud Cover: July middays are the clearest at Newark (11% average cloud cover), and December middays are the cloudiest (33%).
- Solar Radiation: The strongest typical sun at Newark comes at 1 PM in June, averaging 976 W/m².
How to read the hourly heatmaps for Newark
This heatmap shows how average temperature at Newark 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 Newark. 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 Newark 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 Newark 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 Newark 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 Newark
- October 2026 recap: October 2026 at Newark averaged a high of 74°F, close to the 1991-2020 normal of 74°F. It brought 0.12 in. of rain, compared with a normal of 0.69 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 13.0 in. of rain to Newark, 84% of the 15.5 in. normal.
Location Details
Newark weather questions
Everything you need to know about weather and visiting Newark
What is the weather like at Newark today?
It's 54°F at Newark right now, with a comfort score of 78 (great). Monday's forecast high at Newark is 56°F, 9°F below the mid November normal of 65°F. The best window today is 9 AM to noon, at about 55°F with a 7 mph wind (comfort 57).
What is the best month to visit Newark?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Newark are September, August, and June. The best hours are usually 11 AM to 2 PM in September, noon to 3 PM in August, and 11 AM to 2 PM in June. The warm season lasts about 3.7 months, from Jun 8 to Sep 27, when the average high is 77°F or warmer. Highs peak around Aug 8 at about 78°F.
What are the warmest and coldest months at Newark?
August is the warmest month at Newark, with an average high of 78°F. December is the coldest, with an average low of 42°F.
When does the fog burn off at Newark?
Fog or low cloud covers Newark in 33% of 8 AM hours in July, the foggiest month. It usually thins to a third of that by 11 AM. April mornings are the least foggy (9%).
When is it windiest at Newark?
From February through October, wind at Newark typically builds after 1 PM. In June it peaks around 4 PM, averaging 13 mph with 20% of those hours windy, while mornings average 4 mph.
How much rain does Newark get?
February is the wettest month (3.1 in.), out of about 15.5 in. a year. The rainy season runs from Dec 1 to Mar 21, when a day has at least a 20% chance of measurable rain. That stretch brings 69% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 13.0 in. of rain to Newark, 84% of the 15.5 in. normal.
How does Newark weather compare with Coyote Hills Regional Park?
Coyote Hills Regional Park, 3.2 miles away, runs about 10°F cooler than Newark on summer afternoons.
What kind of place is Newark?
Newark is a small city almost at sea level on the bay side of Fremont, and it incorporated in 1955. Its western edge runs out into industrial salt ponds, tidal wetlands, and the open South Bay. The Coyote Hills and the Fremont headquarters of the Don Edwards San Francisco Bay National Wildlife Refuge sit just beyond its northwest corner. It is the smallest of the three Tri-City towns, with Fremont and Union City.
What is Newark weather like in November?
November at Newark averages a high of 65°F and a low of 46°F, with 1.5 in. of rain over about 5 rainy days. About 11% of morning hours are foggy. Afternoon wind averages 6 mph.
More about Newark 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.
- U.S. Fish and Wildlife Service, Don Edwards San Francisco Bay NWR: Visit Us (accessed 2026-10-27)
- East Bay Regional Park District, Alameda Creek Regional Trail (accessed 2026-10-27)
- East Bay Regional Park District, Coyote Hills Regional Park (accessed 2026-10-27)
- KALW, When housing needs clash with protecting our natural resources (April 20, 2026) (accessed 2026-10-27)
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