Pittsburg Weather
Town • San Francisco Bay Area
Pittsburg occupies the Contra Costa shoreline on the east end of Suisun Bay, between Bay Point and Antioch, where the bay narrows toward the mouth of the Delta. Its old downtown and marina face the water along Railroad Avenue, and industrial plants line much of the shore. To the south, the city climbs into the Los Medanos hills toward Black Diamond Mines. Pittsburg is the westernmost of the East County cities, so it sits closest to the Carquinez Strait and its afternoon wind.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Pittsburg weather today and through the year
It's 54°F at Pittsburg right now (feels like 52°F), with 4 mph wind and a comfort score of 78. Monday's forecast high at Pittsburg is 57°F, 8°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 64).
July is the warmest month at Pittsburg, with an average high of 89°F. December is the coldest, with an average low of 39°F. January is the wettest month (3.2 in.), out of about 15.2 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Pittsburg are October, September, and June. The best hours are usually 11 AM to 2 PM in October, 9 AM to noon in September, and 8 AM to 11 AM in June.
Pittsburg's weather is set by the wind that pours through the Carquinez Strait and across Suisun Bay. The Air District notes that strong afternoon gusts are common in northern Contra Costa around the strait, and Pittsburg's waterfront lies directly in that path. Compared with Antioch and Brentwood farther east, the marine air here is a little cooler and arrives a little sooner in the day.
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 Pittsburg 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 64).
Best day this week
Of the next 7 days, Friday looks best for Pittsburg, with a 62°F high and midday comfort near 81. Wednesday looks weakest (46).
Rain
Next good chance of rain: today (81%, about 0.10 in.).
Live weather map
Weather around Pittsburg right now
Overcast and 54° at Pittsburg right now.
About the live weather map for Pittsburg
The map centers on Pittsburg 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.
Pittsburg vs nearby places
Typical summer conditions compared with Pittsburg, 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 Pittsburg |
|---|---|---|---|---|---|
| Antioch | 4.6 mi | +1°F | 1% | 10 mph | a very similar climate |
| Black Diamond Mines Regional Preserve | 4.8 mi | -3°F | 2% | 14 mph | windier summer afternoons (14 vs 10 mph) |
| Birds Landing | 7.2 mi | -2°F | 3% | 13 mph | a very similar climate |
| Redwood Regional Park | 21.2 mi | -16°F | 53% | 10 mph | more summer morning fog (53% vs 2% of morning hours) and about 16°F cooler on summer afternoons |
| Montclair | 22.5 mi | -17°F | 53% | 8 mph | more summer morning fog (53% vs 2% of morning hours) and about 17°F cooler on summer afternoons |
| Claremont District | 22.8 mi | -18°F | 56% | 9 mph | more summer morning fog (56% vs 2% of morning hours) and about 18°F cooler on summer afternoons |
Places with a climate like Pittsburg's
- Fairfield (18 mi away): nearly the same temperatures every month
- Suisun City (17 mi away): nearly the same temperatures every month
- Brentwood (12 mi away): nearly the same temperatures every month
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Pittsburg climate comparisons mean
These cards compare recent conditions at Pittsburg 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 Pittsburg 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.
Pittsburg weather by month
July is the warmest month at Pittsburg, with an average high of 89°F. December is the coldest, with an average low of 39°F. January is the wettest month (3.2 in.), out of about 15.2 in. a year. Morning fog peaks in December, when fog or low cloud covers 24% of the hours from 6 to 10 AM. July has the clearest middays, with clouds covering about 4% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Pittsburg are October, September, and June. The best hours are usually 11 AM to 2 PM in October, 9 AM to noon in September, and 8 AM to 11 AM in June.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 57°F | 39°F | 3.2 in | 7 | 20% | 34% | 6 mph | 9.8 h | 57 |
| Feb | 62°F | 42°F | 2.8 in | 7 | 7% | 23% | 7 mph | 10.7 h | 63 |
| Mar | 67°F | 45°F | 2.3 in | 6 | 3% | 26% | 8 mph | 11.9 h | 71 |
| Apr | 71°F | 47°F | 1.0 in | 4 | 2% | 18% | 9 mph | 13.2 h | 81 |
| May | 78°F | 52°F | 0.5 in | 3 | 2% | 13% | 10 mph | 14.2 h | 82 |
| Jun | 85°F | 56°F | 0.1 in | 2 | 1% | 4% | 10 mph | 14.8 h | 84 |
| Jul | 89°F | 58°F | 0.0 in | 0 | 2% | 4% | 10 mph | 14.5 h | 81 |
| Aug | 89°F | 57°F | 0.0 in | 1 | 1% | 4% | 10 mph | 13.6 h | 81 |
| Sep | 86°F | 56°F | 0.1 in | 1 | 1% | 7% | 8 mph | 12.3 h | 85 |
| Oct | 78°F | 51°F | 0.7 in | 3 | 2% | 11% | 6 mph | 11.1 h | 86 |
| Nov | 65°F | 44°F | 1.6 in | 5 | 9% | 23% | 5 mph | 10.0 h | 77 |
| Dec | 57°F | 39°F | 2.9 in | 7 | 24% | 37% | 5 mph | 9.5 h | 55 |
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 Pittsburg 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 Pittsburg has actually seen.
What makes Pittsburg's weather different
When the fog burns off
3 PMwhen December fog usually thins (25% foggy at 6 AM)
Fog or low cloud covers Pittsburg in 25% of 6 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. September mornings are the least foggy (1%).
When the wind picks up
3 PMwhen afternoon wind builds, April–May
From April through May, wind at Pittsburg typically builds after 3 PM. In May it peaks around 6 PM, averaging 12 mph with 12% of those hours windy, while mornings average 9 mph. Overall, July is the windiest month, peaking near 13 mph around midnight.
Hot hours
5 habove 85°F on a typical July afternoon
In July, the average temperature stays at or above 85°F for 5 hours a day.
Daylight
9.5–14.8 hof daylight, Dec to Jun
Days at Pittsburg range from about 9.5 hours in December to 14.8 hours in June. In mid-June the sun sets around 8:32 PM, and in mid-December around 4:53 PM.
Seasons at Pittsburg
- Warm seasonJun 27 – Sep 23 · highs 86°F+
The warm season lasts about 2.9 months, from Jun 27 to Sep 23, when the average high is 86°F or warmer. Highs peak around Jul 8 at about 89°F.
- Hot afternoonsJun 8 – Sep 25 · highs 85°F+
Average highs reach 85°F or more from Jun 8 to Sep 25.
- Cool seasonNov 26 – Feb 27 · highs 64°F or lower
The cool season runs from Nov 26 to Feb 27, when the average high is 64°F or lower. The coldest nights come around Dec 8, with an average low near 39°F.
- Rainy seasonDec 1 – Mar 16 · 66% of the year's rain
The rainy season runs from Dec 1 to Mar 16, when a day has at least a 20% chance of measurable rain. That stretch brings 66% 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 6 and half of its annual total by Jan 24.
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, Pittsburg averaged 9 days a year at 90°F or hotter and no freezing nights. It averaged 9 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 44 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 Jan 21, 2025 (37°F). The wettest day was Feb 18, 2026 (1.42 in.), and the strongest 2 PM gust was 46 mph on Feb 13, 2025.
- 9days at 90°F or hotter
- 0nights at or below freezing
- 9days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 44mornings with 3+ hours of fog or low cloud
- Hottest day94°FJun 11, 2026
- Coldest night37°FJan 21, 2025
- Wettest day1.42 inFeb 18, 2026
- Strongest 2 PM gust46 mphFeb 13, 2025
What shapes Pittsburg's weather
Despite its shoreline, Pittsburg is an inland town. Suisun Bay is shallow here, and east of the city lies the open, flat Delta, so nothing stops Central Valley heat from building on summer afternoons. Heat waves can push eastern Contra Costa toward triple digits, and Pittsburg usually runs a little less hot than Antioch or Brentwood on those days.
Occasionally the strait's flow reverses and east winds carry Central Valley air west over the city, bringing haze and pollution that the west wind normally sweeps away. In winter that same route delivers fine-particle pollution. Calm nights can also bring tule fog, the dense ground fog of the Central Valley, along the shoreline.
Tips for visiting Pittsburg
Use Pittsburg Center BART
Pittsburg Center station, at 2099 Railroad Avenue, sits on the diesel train extension of BART's yellow line, which runs from Pittsburg/Bay Point to Antioch.
Expect wind at the waterfront
Strong afternoon gusts are common around the Carquinez Strait in northern Contra Costa, so the shoreline is breezier than downtown streets.
Head to Black Diamond for the hills
Black Diamond Mines Regional Preserve sits just south of Pittsburg and Antioch, with about 65 miles of trails. Go early in summer.
Check air quality on east-wind days
East winds can carry Central Valley pollution into the strait area and push pollution levels up here and farther west.
Pittsburg through the seasons
- Spring (March–May)
- Spring brings mild days, green hills to the south, and an afternoon breeze that strengthens as inland heat builds.
- Summer (June–August)
- Summer afternoons are hot, and ozone, a lung irritant that forms in strong sunshine, can exceed health standards in eastern Contra Costa. The strait wind gives the waterfront some relief.
- Fall (September–October)
- Prevailing west winds hold into fall. On the occasional east-wind day, dirtier Central Valley air drifts over the city instead.
- Winter (November–February)
- Winter is cool, damp, and sometimes foggy, and still days can bring fine-particle pollution from the Central Valley.
Activities and the weather that matters
- Waterfront and marina walks: Walks are best in the morning or around sunset. Midafternoon brings the strongest wind off Suisun Bay.
- Hiking at Black Diamond Mines: Fall through spring is ideal. Summer afternoons in the exposed foothills are hot.
- Underground at Black Diamond Mines: The 30-minute Coal Mine Experience is a flat, roughly quarter-mile underground walk that stays the same in any weather. Reservations are strongly recommended.
Official sources and current conditions
- BART: Pittsburg Center Station
- East Bay Regional Park District: Black Diamond Mines
- Bay Area Air Quality Management District: Contra Costa County
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 | 62.3° / 49.3° | 6.4h | 2d | 1.57" | 21 |
| December 2024 | 71 | 57.8° / 47.1° | 4.1h | 11d | 2.92" | 11 |
| January 2025 | 82 | 58.7° / 44° | 6.9h | 2d | 0.06" | 22 |
| February 2025 | 81 | 60.7° / 48.1° | 7.1h | 2d | 3.83" | 18 |
| March 2025 | 88 | 62.2° / 49.2° | 8.8h | 0d | 0.91" | 25 |
| April 2025 | 94 | 67.9° / 53° | 9.8h | 0d | 0.37" | 28 |
| May 2025 | 97 | 74.1° / 57° | 12.5h | 0d | 0.15" | 31 |
| June 2025 | 97 | 76.7° / 58.5° | 12.9h | 0d | 0" | 30 |
| July 2025 | 95 | 77.1° / 59.5° | 12.6h | 0d | 0" | 31 |
| August 2025 | 95 | 82.6° / 62.9° | 11.5h | 0d | 0" | 31 |
| September 2025 | 94 | 78.8° / 64° | 10h | 0d | 0.07" | 29 |
| October 2025 | 91 | 71.7° / 57.6° | 8.1h | 0d | 1.47" | 28 |
| November 2025 | 77 | 62.5° / 52.3° | 5.6h | 10d | 2.09" | 17 |
| December 2025 | 59 | 52.7° / 46° | 3.1h | 18d | 2.35" | 3 |
| January 2026 | 72 | 57.3° / 44.1° | 6.2h | 15d | 2.51" | 11 |
| February 2026 | 78 | 62.5° / 47.9° | 6.4h | 5d | 3.57" | 17 |
| March 2026 | 96 | 74.8° / 56.5° | 9.8h | 0d | 0" | 31 |
| April 2026 | 90 | 68° / 53.6° | 9.3h | 0d | 2.66" | 25 |
| May 2026 | 95 | 72.9° / 56.8° | 11.7h | 0d | 0.28" | 31 |
| June 2026 | 96 | 78.5° / 60.6° | 12.7h | 0d | 0" | 30 |
| July 2026 | 94 | 81.6° / 62.4° | 12.1h | 0d | 0" | 30 |
| August 2026 | 94 | 81.7° / 62° | 11.2h | 0d | 0.02" | 31 |
| September 2026 | 95 | 78.6° / 61.9° | 10.3h | 0d | 0.02" | 30 |
| October 2026 | 91 | 75.6° / 58.4° | 8.3h | 1d | 0.39" | 29 |
Climate Trends
Average Temperature by Month
About the Pittsburg climate charts
The temperature chart compares average monthly highs and lows at Pittsburg, 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 Pittsburg. 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 Pittsburg, the warmest typical hour is 4 PM in July (89°F). The coldest is 7 AM in December (44°F).
- Fog: Fog or low cloud covers Pittsburg in 25% of 6 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. September mornings are the least foggy (1%).
- Wind: From April through May, wind at Pittsburg typically builds after 3 PM. In May it peaks around 6 PM, averaging 12 mph with 12% of those hours windy, while mornings average 9 mph. Overall, July is the windiest month, peaking near 13 mph around midnight.
- Cloud Cover: July middays are the clearest at Pittsburg (4% average cloud cover), and December middays are the cloudiest (37%).
- Solar Radiation: The strongest typical sun at Pittsburg comes at 1 PM in June, averaging 992 W/m².
How to read the hourly heatmaps for Pittsburg
This heatmap shows how average temperature at Pittsburg 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 Pittsburg. 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 Pittsburg 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 Pittsburg 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 Pittsburg 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 Pittsburg
- October 2026 recap: October 2026 at Pittsburg averaged a high of 76°F, 4°F warmer than October 2025 (72°F).
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 15.0 in. of rain to Pittsburg, 98% of the 15.2 in. normal.
Location Details
Pittsburg weather questions
Everything you need to know about weather and visiting Pittsburg
What is the weather like at Pittsburg today?
It's 54°F at Pittsburg right now, with a comfort score of 78 (great). Monday's forecast high at Pittsburg is 57°F, 8°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 64).
What is the best month to visit Pittsburg?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Pittsburg are October, September, and June. The best hours are usually 11 AM to 2 PM in October, 9 AM to noon in September, and 8 AM to 11 AM in June. The warm season lasts about 2.9 months, from Jun 27 to Sep 23, when the average high is 86°F or warmer. Highs peak around Jul 8 at about 89°F.
What are the warmest and coldest months at Pittsburg?
July is the warmest month at Pittsburg, with an average high of 89°F. December is the coldest, with an average low of 39°F.
When does the fog burn off at Pittsburg?
Fog or low cloud covers Pittsburg in 25% of 6 AM hours in December, the foggiest month. It usually thins to a third of that by 3 PM. September mornings are the least foggy (1%).
When is it windiest at Pittsburg?
From April through May, wind at Pittsburg typically builds after 3 PM. In May it peaks around 6 PM, averaging 12 mph with 12% of those hours windy, while mornings average 9 mph. Overall, July is the windiest month, peaking near 13 mph around midnight.
How much rain does Pittsburg get?
January is the wettest month (3.2 in.), out of about 15.2 in. a year. The rainy season runs from Dec 1 to Mar 16, when a day has at least a 20% chance of measurable rain. That stretch brings 66% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 15.0 in. of rain to Pittsburg, 98% of the 15.2 in. normal.
What kind of place is Pittsburg?
Pittsburg occupies the Contra Costa shoreline on the east end of Suisun Bay, between Bay Point and Antioch, where the bay narrows toward the mouth of the Delta. Its old downtown and marina face the water along Railroad Avenue, and industrial plants line much of the shore. To the south, the city climbs into the Los Medanos hills toward Black Diamond Mines. Pittsburg is the westernmost of the East County cities, so it sits closest to the Carquinez Strait and its afternoon wind.
What is Pittsburg weather like in November?
November at Pittsburg averages a high of 65°F and a low of 44°F, with 1.6 in. of rain over about 5 rainy days. Afternoon wind averages 5 mph.
More about Pittsburg 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.
- Bay Area Air Quality Management District, Contra Costa County community page (updated Apr 21, 2017) (accessed 2026-10-27)
- California State Lands Commission, Georgia Pacific Gypsum Antioch Wharf Upgrade Project MND, Section 3.3 Air Quality (Aug 2015) (accessed 2026-10-27)
- BART, Pittsburg Center Station (accessed 2026-10-27)
- East Bay Regional Park District, Black Diamond Mines Regional Preserve (accessed 2026-10-27)
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