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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. 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 64%
Wind Speed NNW 14 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Jun 03:35 PM PDT
Extended Forecast for

Sunnyvale CA

  • Tonight

    Tonight: Increasing clouds, with a low around 58. North wind 5 to 7 mph becoming calm in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. North northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. Southwest wind 7 to 9 mph.

    Low: 58 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 58. North wind 5 to 7 mph becoming calm in the evening.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 58. North northwest wind 5 to 7 mph becoming calm after midnight.
Thursday
Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 58. Southwest wind 7 to 9 mph.
Juneteenth
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.05°W (Elev. 118 ft)
Last Update:
1:39 pm PDT Jun 16, 2026
Forecast Valid:
3pm PDT Jun 16, 2026-6pm PDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation