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

Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

44°F

7°C

Humidity 44%
Wind Speed N 16 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 03 Dec 04:05 PM PST
Extended Forecast for

3 Miles E Walnut Creek CA

  • Tonight

    Tonight: Partly cloudy, with a low around 37. East northeast wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 59. North wind 5 to 8 mph.

    High: 59 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Light north wind.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 43. Light and variable wind.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. East northeast wind 6 to 9 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 59. North wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 41. Calm wind.
Friday
Sunny, with a high near 64. Light north wind.
Friday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 43. Light and variable wind.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 64.
Saturday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 45.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.
Sunday Night
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Wednesday
Patchy fog. Otherwise, partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Walnut Creek CA
 37.9°N 122.01°W (Elev. 364 ft)
Last Update:
12:26 pm PST Dec 3, 2025
Forecast Valid:
4pm PST Dec 3, 2025-6pm PST Dec 10, 2025
 
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