Record Warmth Lingers; Fire Weather Concerns; Unsettled Pacific Northwest

More record warm temperatures are forecast this week from California, Southwest, Plains then into the Mississippi Valley and Southeast. The warmth combining with dry conditions may result in elevated to locally critical fire weather conditions. Meanwhile, another Pacific system will move across the Pacific Northwest with lower elevation rain and mountain snows. For Hawaii, conditions improving. Read More >

Current conditions at

LOS ALTOS (LOAC1)

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

NA

68°F

20°C

Humidity 55%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 22 Mar 07:10 PM PDT
Extended Forecast for

Cupertino CA

  • Tonight

    Tonight: Mostly clear, with a low around 50. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 50 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 50. North northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 80. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 52. North northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 80. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tuesday Night
Clear, with a low around 50. Northwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.31°N 122.06°W (Elev. 610 ft)
2:41 pm PDT Mar 22, 2026
8pm PDT Mar 22, 2026-6pm PDT Mar 29, 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