Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Port Chicago (PCOC1)

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

NA

47°F

8°C

Humidity NA
Wind Speed NE 8 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint N/A
Visibility NA
Wind Chill43°F (6°C)
Last update NA
Extended Forecast for

3 Miles WNW Pittsburg CA

  • Tonight

    Tonight: Patchy fog between 9pm and 11pm.  Otherwise, cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog
    then Cloudy

  • Wednesday

    Wednesday: Widespread dense fog, mainly before 7am.  Otherwise, cloudy, with a high near 55. Light northeast wind.

    High: 55 °F

    Dense Fog

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 48. Light west southwest wind.

    Low: 48 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 60. West wind 3 to 5 mph.

    High: 60 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. West southwest wind around 6 mph.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog between 9pm and 11pm. Otherwise, cloudy, with a low around 45. Calm wind.
Wednesday
Widespread dense fog, mainly before 7am. Otherwise, cloudy, with a high near 55. Light northeast wind.
Wednesday Night
Cloudy, with a low around 48. Light west southwest wind.
Thursday
Mostly cloudy, with a high near 60. West wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 46. West southwest wind around 6 mph.
Friday
Partly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
Mostly cloudy, with a high near 57.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly cloudy, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Pittsburg CA
 38.03°N 121.93°W (Elev. 30 ft)
7:24 pm PST Jan 20, 2026
8pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database