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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

41°F

5°C

Humidity 85%
Wind Speed WSW 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 27 Jan 06:10 AM PST
Extended Forecast for

Cupertino CA

  • Today

    Today: Partly sunny, with a high near 62. South wind 5 to 10 mph.

    High: 62 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of rain. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 47. South southeast wind around 5 mph becoming calm.

    Low: 47 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62. North northwest wind 3 to 7 mph.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. North northwest wind around 6 mph becoming calm in the evening.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 62. South wind 5 to 10 mph.
Tonight
A 20 percent chance of rain. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 47. South southeast wind around 5 mph becoming calm.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62. North northwest wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 42. North northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 67.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
A slight chance of rain. Partly sunny, with a high near 65.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 64.
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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:
2:38 am PST Jan 27, 2026
Forecast Valid:
6am PST Jan 27, 2026-6pm PST Feb 2, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation