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

Heavy Rainfall on the Western Gulf Coast; Severe Thunderstorms in the Southern Plains Friday

A multi-day heavy rainfall event will continue over the western Gulf Coast through Monday. Slight Risks of excessive rainfall have been issued, and Flood Watches remain in effect through Monday evening. Scattered severe storms capable of producing large hail and damaging winds are possible across western portions of Texas and Oklahoma on Friday. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

haze

57°F

14°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 54°F (12°C)
Visibility 6.00 mi
Last update 21 May 10:55 PM PDT
Extended Forecast for

Sunnyvale CA

  • Tonight

    Tonight: Partly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming north northwest 5 to 9 mph in the afternoon.

    High: 79 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. West wind 5 to 8 mph becoming calm after midnight.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. Calm wind.
Friday
Partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming north northwest 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 53. West northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Sunny, with a high near 79. Calm wind becoming west 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 53. West wind 5 to 8 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 51.
Memorial Day
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 78.
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 122.02°W (Elev. 92 ft)
Last Update:
1:26 pm PDT May 21, 2026
Forecast Valid:
11pm PDT May 21, 2026-6pm PDT May 28, 2026
 
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