Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

NA

42°F

6°C

Humidity 100%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 27 Dec 06:28 AM PST
Extended Forecast for

Walnut Creek CA

  • Today

    Today: Mostly sunny, with a high near 51. Light and variable wind becoming north around 6 mph in the morning.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Light and variable wind.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 51. Calm wind becoming northeast around 6 mph in the morning.

    High: 51 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light east northeast wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53. East northeast wind around 7 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy frost before 7am.  Otherwise, mostly sunny, with a high near 53.

    High: 53 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

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

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 51. Light and variable wind becoming north around 6 mph in the morning.
Tonight
Increasing clouds, with a low around 39. Light and variable wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 51. Calm wind becoming northeast around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 37. Light east northeast wind.
Monday
Sunny, with a high near 53. East northeast wind around 7 mph.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Mostly sunny, with a high near 53.
Wednesday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 40.
New Year's Day
A chance of rain. Cloudy, with a high near 53.
Thursday Night
A chance of rain. Cloudy, with a low around 44.
Friday
A chance of rain. Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Walnut Creek CA
 37.9°N 122.07°W (Elev. 203 ft)
12:27 am PST Dec 27, 2025
7am PST Dec 27, 2025-6pm PST Jan 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database