Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

51°F

11°C

Humidity 81%
Wind Speed W 14 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Apr 05:28 PM PDT
Extended Forecast for

Walnut Creek CA

  • Tonight

    Tonight: Showers and thunderstorms likely.  Mostly cloudy, with a low around 47. Southwest wind 5 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers after 11am.  Partly sunny, with a high near 65. Light and variable wind becoming west southwest around 6 mph in the afternoon.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 44. West wind around 6 mph becoming calm  in the evening.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 8am.  Otherwise, sunny, with a high near 70. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 70 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. Southwest wind 5 to 7 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely. Mostly cloudy, with a low around 47. Southwest wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers before 10am, then a chance of showers after 11am. Partly sunny, with a high near 65. Light and variable wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 44. West wind around 6 mph becoming calm in the evening.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 70. Calm wind becoming west northwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 47. Southwest wind 5 to 7 mph.
Friday
Partly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 47.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Walnut Creek CA
 37.9°N 122.07°W (Elev. 203 ft)
2:36 pm PDT Apr 21, 2026
6pm PDT Apr 21, 2026-6pm PDT Apr 28, 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