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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

61°F

16°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 13 Aug 06:55 AM PDT
Extended Forecast for

Sunnyvale CA

  • Today

    Today: Mostly sunny, with a high near 73. South southeast wind 7 to 10 mph becoming southwest in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Southwest wind 5 to 9 mph becoming light after midnight.

    Low: 59 °F

    Increasing
    Clouds

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming west northwest 5 to 9 mph in the morning.

    High: 72 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Increasing clouds, with a low around 58. West northwest wind 5 to 9 mph becoming light west after midnight.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 73. South southeast wind 7 to 10 mph becoming southwest in the afternoon.
Tonight
Increasing clouds, with a low around 59. Southwest wind 5 to 9 mph becoming light after midnight.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming west northwest 5 to 9 mph in the morning.
Friday Night
Increasing clouds, with a low around 58. West northwest wind 5 to 9 mph becoming light west after midnight.
Saturday
Mostly sunny, with a high near 73. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 57.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 74.
Sunday Night
Mostly cloudy, with a low around 58.
Monday
Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 74.
Monday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 75.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 58.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.05°W (Elev. 118 ft)
Last Update:
1:26 am PDT Aug 13, 2026
Forecast Valid:
7am PDT Aug 13, 2026-6pm PDT Aug 19, 2026
 
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Additional Resources

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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