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

Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

38°F

3°C

Humidity 85%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 21 Feb 04:10 AM PST
Extended Forecast for

Cupertino CA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 69. Light south southeast wind.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 53. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 53 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain, mainly after 2pm. High near 64. South southeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 4am. Patchy fog after 4am. Low around 54. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 66. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 66 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 69. Light south southeast wind.
Tonight
A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 53. Calm wind becoming south southeast around 5 mph after midnight.
Tuesday
Rain, mainly after 2pm. High near 64. South southeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain, mainly before 4am. Patchy fog after 4am. Low around 54. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 20 percent chance of rain before 10am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 66. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 71.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Partly sunny, with a high near 69.
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 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
Last Update:
2:22 pm PST Feb 23, 2026
Forecast Valid:
2pm PST Feb 23, 2026-6pm PST Mar 1, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation