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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

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

NA

48°F

9°C

Humidity 100%
Wind Speed SSW 18 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 11 Feb 04:28 PM PST
Extended Forecast for

Walnut Creek CA

  • This Afternoon

    This Afternoon: Rain likely. Cloudy, with a steady temperature around 56. South southwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Rain Likely

  • Tonight

    Tonight: A 50 percent chance of rain. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45. East southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Patchy fog between 8am and 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 62. Calm wind becoming north northeast 5 to 8 mph in the morning.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 43. Light southwest wind.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west around 5 mph in the afternoon.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 10 percent chance of rain after 4pm. Cloudy, with a high near 61.

    High: 61 °F

    Cloudy then
    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am. Cloudy, with a low around 46.

    Low: 46 °F

    Rain Likely

  • Sunday

    Sunday: Rain. Mostly cloudy, with a high near 59.

    High: 59 °F

    Rain

Detailed Forecast

This Afternoon
Rain likely. Cloudy, with a steady temperature around 56. South southwest wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 50 percent chance of rain. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45. East southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Patchy fog between 8am and 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 62. Calm wind becoming north northeast 5 to 8 mph in the morning.
Thursday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 43. Light southwest wind.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
A 10 percent chance of rain after 4pm. Cloudy, with a high near 61.
Saturday Night
Rain likely, mainly after 4am. Cloudy, with a low around 46.
Sunday
Rain. Mostly cloudy, with a high near 59.
Sunday Night
Rain. Cloudy, with a low around 45.
Washington's Birthday
Rain and possibly a thunderstorm. Cloudy, with a high near 56.
Monday Night
Rain and possibly a thunderstorm. Cloudy, with a low around 41.
Tuesday
Rain. Mostly cloudy, with a high near 54.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 39.
Wednesday
Rain likely. Mostly cloudy, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walnut Creek CA
 37.9°N 122.07°W (Elev. 203 ft)
Last Update:
12:26 pm PST Feb 11, 2026
Forecast Valid:
5pm PST Feb 11, 2026-6pm PST Feb 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation