California · NWS MTR office

Martinez, CA weather

It is 52°F and clear at Concord, Buchanan Field as of Oct 27, 11:15 PM PDT. Tonight: Mostly Clear, low near 46°F. Forecast from the National Weather Service, issued Oct 27, 3:07 PM PDT.

Updated Oct 27, 11:25 PM PDT (snapshot)

Current conditions

Temperature

52°F

Clear

Wind

Calm

Humidity 82% · dew point 46°F

Pressure · visibility

30.02 inHg

Visibility 10 mi

Observed at Concord, Buchanan Field (KCCR), Oct 27, 11:15 PM PDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Martinez forecast zone right now.

Around the NWS MTR forecast area

2 active alerts cover zones served by the MTR office near Martinez:

  • Coastal Flood Advisory (2)

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. California has 8 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Martinez (local time)
TimeTempForecastPrecip. chanceWind
Tue 11 PM52°FMostly Clear0%WSW 2 mph
Wed 12 AM52°FMostly Clear0%WSW 2 mph
Wed 1 AM51°FMostly Clear0%WSW 2 mph
Wed 2 AM49°FMostly Clear0%SW 1 mph
Wed 3 AM49°FMostly Clear0%SW 1 mph
Wed 4 AM48°FMostly Clear0%SW 1 mph
Wed 5 AM47°FMostly Clear0%SSW 1 mph
Wed 6 AM47°FSunny0%SW 1 mph
Wed 7 AM47°FSunny0%WSW 1 mph
Wed 8 AM47°FSunny0%WSW 1 mph
Wed 9 AM51°FSunny0%WSW 1 mph
Wed 10 AM55°FSunny0%NNW 1 mph
Wed 11 AM59°FSunny0%N 1 mph
Wed 12 PM63°FSunny0%N 2 mph
Wed 1 PM66°FSunny0%N 2 mph
Wed 2 PM68°FSunny0%NW 3 mph
Wed 3 PM68°FSunny0%WNW 3 mph
Wed 4 PM69°FSunny0%W 3 mph
Wed 5 PM68°FSunny0%WSW 3 mph
Wed 6 PM65°FMostly Clear0%WSW 3 mph
Wed 7 PM62°FMostly Clear0%WSW 3 mph
Wed 8 PM57°FPartly Cloudy0%SW 2 mph
Wed 9 PM55°FPartly Cloudy0%SW 2 mph
Wed 10 PM54°FPartly Cloudy0%SW 2 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Martinez can differ.

7-day forecast

Tonight

Low 46°F

Mostly clear, with a low around 46. Southwest wind around 2 mph.

Wednesday

High 69°F·Low 49°F

Sunny, with a high near 69. West wind around 3 mph.

Wednesday Night: Mostly cloudy, with a low around 49. Southwest wind around 3 mph.

Thursday

High 66°F·Low 49°F

Mostly cloudy, with a high near 66. East wind around 2 mph.

Thursday Night: Mostly cloudy, with a low around 49. Southwest wind around 3 mph.

Friday

High 66°F·Low 48°F

Sunny, with a high near 66.

Friday Night: Partly cloudy, with a low around 48.

Saturday

High 62°F·Low 46°F

A slight chance of rain after 5pm. Partly sunny, with a high near 62.

Saturday Night: A slight chance of rain. Partly cloudy, with a low around 46.

Sunday

High 65°F·Low 48°F

A slight chance of rain before 10am. Sunny, with a high near 65.

Sunday Night: Mostly clear, with a low around 48.

Monday

High 67°F·Low 50°F

Mostly sunny, with a high near 67.

Monday Night: A slight chance of rain after 4am. Partly cloudy, with a low around 50.

Tuesday

High 67°F

A chance of rain before 5pm. Partly sunny, with a high near 67.

Nearby cities

Larger cities in the area

Other cities in Contra Costa County

See every city we cover in California, or check all active alerts.

About this forecast

Forecast office
Martinez is served by the National Weather Service MTR forecast office, forecast zone CAZ510, county zone CAC013.
Location used
The Census Bureau's internal point for Martinez (37.9981, -122.1144), in Contra Costa County. Population: 37,006 (2024 estimate), number 216 of the 296 California cities on this site.
Radar
Nearest NWS radar: KDAX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/37.9981,-122.1144 (forecast issued Oct 27, 3:07 PM PDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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