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

Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

57°F

14°C

Humidity 47%
Wind Speed SE 11 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 21 Feb 10:55 AM PST
Extended Forecast for

Sunnyvale CA

  • Today

    Today: Sunny, with a high near 59. South wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66. South wind around 8 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 68. Calm wind.

    High: 68 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 53. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely. Cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 4am. Cloudy, with a low around 52.

    Low: 52 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 59. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 43. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 66. South wind around 8 mph.
Sunday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 44. Light and variable wind.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 68. Calm wind.
Monday Night
A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 53. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain likely. Cloudy, with a high near 63. Chance of precipitation is 70%.
Tuesday Night
Rain likely, mainly before 4am. Cloudy, with a low around 52.
Wednesday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 65.
Wednesday Night
A chance of rain, mainly before 4am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 48.
Thursday
A slight chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 70.
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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:
7:14 am PST Feb 21, 2026
Forecast Valid:
11am PST Feb 21, 2026-6pm PST Feb 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation