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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

Lat: 37.40583°NLon: 122.04806°WElev: 33.0ft.

haze

52°F

11°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 48°F (9°C)
Visibility 6.00 mi
Last update 22 Mar 04:55 AM PDT
Extended Forecast for

Sunnyvale CA

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 49. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 50. Northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly cloudy, with a low around 49.
Friday
Partly sunny, with a high near 79.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.4°N 122.03°W (Elev. 46 ft)
Last Update:
2:27 am PDT Mar 22, 2026
Forecast Valid:
5am PDT Mar 22, 2026-6pm PDT Mar 28, 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