Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

72°F

22°C

Humidity 64%
Wind Speed NNW 11 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Aug 02:10 PM PDT
Extended Forecast for

Sunnyvale CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. North northwest wind around 9 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. North northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 59 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 77. Calm wind becoming north northwest 5 to 9 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. North northwest wind 5 to 9 mph becoming light northwest  after midnight.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. North northwest wind around 9 mph.
Tonight
Increasing clouds, with a low around 59. North northwest wind 5 to 7 mph becoming calm after midnight.
Thursday
Partly sunny, with a high near 77. Calm wind becoming north northwest 5 to 9 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. North northwest wind 5 to 9 mph becoming light northwest after midnight.
Friday
Mostly sunny, with a high near 76. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.02°W (Elev. 92 ft)
1:26 pm PDT Aug 19, 2026
2pm PDT Aug 19, 2026-6pm PDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database