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Brentwood, CA Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Tonight
Clear. Low around 48, with temperatures rising to around 52 overnight. West wind around 1 mph.
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Sunday
Sunny, with a high near 75. North wind around 2 mph.
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Sunday Night
Mostly clear, with a low around 50. West southwest wind 0 to 3 mph.
National Weather Service forecast updated 15 hrs ago.
Hourly
Hourly forecast- Now61°
- 9 PM60°
- 10 PM59°
- 11 PM57°
- Sun12 AM56°
- 1 AM55°
- 2 AM54°
- 3 AM53°
- 4 AM52°
- 5 AM52°
- 6 AM50°
- 7 AM50°
- 8 AM50°
- 9 AM55°
- 10 AM60°
- 11 AM63°
- 12 PM68°
- 1 PM70°
- 2 PM72°
- 3 PM74°
- 4 PM73°
- 5 PM74°
- 6 PM72°
- 7 PM67°
Daily forecast
Details- TodayOct 24Sunny48°73°
- SunOct 25Sunny50°75°
- MonOct 26Sunny47°73°
- TueOct 27Sunny48°71°
- WedOct 28Mostly Sunny49°69°
- ThuOct 29Partly Sunny then Slight Chance Light Rain28%49°68°
- FriOct 30Chance Light Rain28%48°66°
- SatOct 31Sunny42°63°
- SunNov 1Sunny41°62°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news in California
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- SatGood (37)
- SunGood (39)
- MonGood (38)
Livermore, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyLivermore, records since 1903. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
Forecasters' discussion
From the National Weather Service office in MTR, issued 7 hrs ago
Key Messages
Updated at 914 AM PDT Sat Oct 24 2026
- Near normal temperatures this weekend, cooling to slightly below normal through the remainder of the upcoming week
- Coastal flooding due to astronomical high tides and thermal expansion this weekend through Thursday
Short Term
Issued at 114 PM PDT Sat Oct 24 2026 (This evening through Sunday night)
Clear sky conditions are observed across all of the Bay Area and north Central Coast this afternoon. This has allowed temperatures to warm to into the upper 60s to lower 70s regionwide. Once the sun sets, temperatures will cool into the 50s and bottom out in the lower 40s across the North Bay Valleys Sunday morning. Elsewhere, expecting upper 40s to low 50s across the remainder of the region. There is a greater potential to see fog across the Russian River and Petaluma valleys early Sunday morning as the lack of offshore flow should allow for decent radiational cooling. However, incoming high clouds may limit that cooling as a cut-off mid/upper level low is forecast to push into the Pacific Northwest Sunday night into Monday. Expect temperatures to be similar on Sunday as they are today, generally within a few degrees of normal.
Long Term
Issued at 114 PM PDT Sat Oct 24 2026 (Monday through next Friday)
The aforementioned system mainly impacting the Pacific Northwest and northern California has the potential to bring very light rainfall to the northern coastal waters and far northern portions of the North Bay Monday morning, generally only a few hundredths of an inch or so. As such, temperatures cool to below normal by a few degrees on Monday with a gradual cooling trend throughout the remainder of the week as the mid/upper level trough off of the West Coast deepens. Cooler, unsettled conditions look to return by Friday and continue into next weekend. However, confidence has lowered since yesterday's writing. Be sure to stay up-to-date with the latest forecast information from trusted sources.
Aviation
(18Z TAFS) Issued at 1039 AM PDT Sat Oct 24 2026
Quiet weather and VFR conditions are expected over the TAF cycle. Some high clouds should start to move into the region on Sunday, as a upper low moves into the PacNW.
Vicinity of SFO...Quiet weather and VFR conditions will prevail through the TAF cycle. Winds are expected to become onshore this afternoon and continue into the evening, with lighter and variable winds returning for the overnight hours.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...The forecast will be on repeat as we go from offshore wind to onshore winds this afternoon. Later this evenings, winds will revert and become lightly offshore again.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.