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

Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. 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 13 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Jul 05:15 PM PDT
Extended Forecast for

Sunnyvale CA

  • Tonight

    Tonight: Increasing clouds, with a low around 57. North northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 78. Light and variable wind becoming north 5 to 10 mph in the afternoon.

    High: 78 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 57. Northwest wind 5 to 8 mph becoming south southwest after midnight.

    Low: 57 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 76. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    High: 76 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. West wind 5 to 9 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. North northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 78. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 57. Northwest wind 5 to 8 mph becoming south southwest after midnight.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 76. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 57. West wind 5 to 9 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 56.
Monday
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.05°W (Elev. 118 ft)
Last Update:
3:02 pm PDT Jul 14, 2025
Forecast Valid:
5pm PDT Jul 14, 2025-6pm PDT Jul 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation