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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Mostly Cloudy

66°F

19°C

Humidity 68%
Wind Speed SE 11 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Nov 06:35 PM PST
Extended Forecast for

Cupertino CA

Wind Advisory November 12, 10:00pm until November 13, 04:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Showers, mainly after 10pm. Low around 60. Southeast wind 14 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers

  • Thursday

    Thursday: Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers after 1pm. High near 66. South wind 13 to 20 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 66 °F

    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 52. South southeast wind around 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 4pm. Partly sunny, with a high near 65. Southeast wind around 6 mph becoming north northwest in the afternoon.

    High: 65 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers between 10pm and 4am. Partly cloudy, with a low around 48. Light northeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers after 10am. Mostly sunny, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Mostly cloudy, with a high near 64.

    High: 64 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers, mainly after 10pm. Low around 60. Southeast wind 14 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers after 1pm. High near 66. South wind 13 to 20 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52. South southeast wind around 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers before 4pm. Partly sunny, with a high near 65. Southeast wind around 6 mph becoming north northwest in the afternoon.
Friday Night
A chance of showers between 10pm and 4am. Partly cloudy, with a low around 48. Light northeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers after 10am. Mostly sunny, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51.
Sunday
A slight chance of showers. Mostly cloudy, with a high near 64.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 50.
Monday
A chance of showers, mainly before 10am. Partly sunny, with a high near 61.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cupertino CA
 37.33°N 122.04°W (Elev. 243 ft)
Last Update:
12:26 pm PST Nov 12, 2025
Forecast Valid:
7pm PST Nov 12, 2025-6pm PST Nov 19, 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