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

Storm Impacting the Southwest U.S.

A slow moving weather disturbance will continue to bring periodic rain showers, a few isolated thunderstorms, and a localized flash flooding across the Southwest. The threat will expand into the Southern Plains Wednesday night. Moderate to heavy snow across the Sierra Nevada and southern Utah Ranges will continue into the overnight period. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

48°F

9°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 Nov 01:15 AM PST
Extended Forecast for

Sunnyvale CA

  • Overnight

    Overnight: Partly cloudy, with a low around 47. Light south wind.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely after 10pm. Cloudy, with a low around 50. Calm wind becoming southeast 5 to 9 mph in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind 9 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Rain Likely
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44. North northwest wind around 6 mph.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 47. Light south wind.
Wednesday
Partly sunny, with a high near 60. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Wednesday Night
Rain likely after 10pm. Cloudy, with a low around 50. Calm wind becoming southeast 5 to 9 mph in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind 9 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 44. North northwest wind around 6 mph.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 65.
Saturday Night
Clear, with a low around 45.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 46.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.36°N 122.02°W (Elev. 128 ft)
Last Update:
1:37 am PST Nov 19, 2025
Forecast Valid:
1am PST Nov 19, 2025-6pm PST Nov 25, 2025
 
Forecast Discussion
 
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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