Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

70°F

21°C

Humidity 52%
Wind Speed NNW 8 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 52°F (11°C)
Visibility 8.00 mi
Last update 14 Mar 03:15 PM PDT
Extended Forecast for

Sunnyvale CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 49. Northwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 49 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 61. North northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 61 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 49. Northwest wind 5 to 9 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. Northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 87. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 61. North northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Clear, with a low around 61.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.4°N 122.03°W (Elev. 46 ft)
1:26 pm PDT Mar 14, 2026
3pm PDT Mar 14, 2026-6pm PDT Mar 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database