Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

39°F

4°C

Humidity 85%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 21 Feb 02:10 AM PST
Extended Forecast for

2 Miles S Cupertino CA

Cold Weather Advisory until February 21, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until February 21, 09:00am

    NOW until 9:00am Sat

    Cold Weather Advisory

  • Overnight

    Low: 38 °F

    Patchy Frost

  • Saturday

    Saturday: Mostly sunny, with a high near 57. South southeast wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. South southeast wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64. South wind around 8 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain after 10pm.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain.  Cloudy, with a high near 62.

    High: 62 °F

    Rain

Detailed Forecast

Overnight
Patchy frost. Otherwise, mostly cloudy, with a low around 38. South southeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 57. South southeast wind 6 to 13 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 43. South southeast wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 64. South wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 44. Calm wind.
Monday
Mostly sunny, with a high near 67.
Monday Night
A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 52.
Tuesday
Rain. Cloudy, with a high near 62.
Tuesday Night
Rain, mainly before 4am. Cloudy, with a low around 51.
Wednesday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 63.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 48.
Thursday
A slight chance of rain. Partly sunny, with a high near 68.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Cupertino CA
 37.28°N 122.06°W (Elev. 666 ft)
12:26 am PST Feb 21, 2026
2am PST Feb 21, 2026-6pm PST Feb 27, 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