National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Port Chicago (PCOC1)

Lat: 38.056°NLon: 122.0395°WElev: 0.0ft.

NA

49°F

9°C

Humidity NA
Wind Speed W 8 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint N/A
Visibility NA
Wind Chill46°F (8°C)
Last update NA
Extended Forecast for

4 Miles W Pittsburg CA

  • Overnight

    Overnight: A 20 percent chance of rain. Partly cloudy, with a low around 45. West wind around 9 mph.

    Low: 45 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 50. West southwest wind around 7 mph becoming north in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 40. North wind around 6 mph becoming west after midnight.

    Low: 40 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 50. North northeast wind around 7 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Northeast wind 5 to 7 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Partly cloudy, with a low around 45. West wind around 9 mph.
Saturday
Mostly sunny, with a high near 50. West southwest wind around 7 mph becoming north in the afternoon.
Saturday Night
Increasing clouds, with a low around 40. North wind around 6 mph becoming west after midnight.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 50. North northeast wind around 7 mph.
Sunday Night
Mostly clear, with a low around 37. Northeast wind 5 to 7 mph.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 41.
New Year's Day
A chance of rain. Cloudy, with a high near 49.
Thursday Night
A chance of rain. Cloudy, with a low around 45.
Friday
A chance of rain. Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Pittsburg CA
 38.03°N 121.96°W (Elev. 59 ft)
Last Update:
12:27 am PST Dec 27, 2025
Forecast Valid:
3am PST Dec 27, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation