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

Blizzard Conditions Continue Tonight Across Coastal Maine; Critical Fire Weather in the Southern Plains Tuesday

Heavy snow and strong winds will continue into Tuesday morning across Maine as the major winter storm departs off the coast. Blizzard Warnings and Winter Storm Warnings remain in effect. Strong winds and dry conditions will promote elevated to critical fire weather conditions across southeast Colorado into the southern High Plains Tuesday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

N/A

Humidity 99%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 20 Feb 03:25 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 52. South southwest wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 59. South southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Rain Likely
    then Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 8pm. Low around 54. South southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain then
    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 61. West wind around 6 mph.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. West northwest wind around 7 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 52. South southwest wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 59. South southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain, mainly before 8pm. Low around 54. South southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Partly sunny, with a high near 61. West wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 49. West northwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
A slight chance of rain after 4pm. Partly sunny, with a high near 64.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Sunday
A slight chance of rain. Partly sunny, with a high near 60.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
2:22 pm PST Feb 23, 2026
Forecast Valid:
5pm PST Feb 23, 2026-6pm PST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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