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

44°F

7°C

Humidity NA
Wind Speed ENE 10 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint N/A
Visibility NA
Wind Chill39°F (4°C)
Last update NA
Extended Forecast for

3 Miles WNW Pittsburg CA

  • Today

    Today: Areas of fog before 3pm.  Otherwise, cloudy, with a high near 54. Light east wind.

    High: 54 °F

    Areas Fog

  • Tonight

    Tonight: Patchy fog between 3am and 5am.  Otherwise, cloudy, with a low around 47. Light west southwest wind.

    Low: 47 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 9am.  Otherwise, mostly cloudy, with a high near 60. West southwest wind 3 to 5 mph.

    High: 60 °F

    Areas Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 47. Southwest wind around 7 mph.

    Low: 47 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 57. Light and variable wind becoming north around 5 mph in the afternoon.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

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

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

Detailed Forecast

Today
Areas of fog before 3pm. Otherwise, cloudy, with a high near 54. Light east wind.
Tonight
Patchy fog between 3am and 5am. Otherwise, cloudy, with a low around 47. Light west southwest wind.
Thursday
Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 60. West southwest wind 3 to 5 mph.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 47. Southwest wind around 7 mph.
Friday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 57. Light and variable wind becoming north around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly cloudy, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 40.
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)
2:13 am PST Jan 21, 2026
11am PST Jan 21, 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