Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

70°F

21°C

Humidity 49%
Wind Speed NNW 11 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 50°F (10°C)
Visibility 8.00 mi
Last update 19 Apr 01:35 PM PDT
Extended Forecast for

Sunnyvale CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. Northwest wind 7 to 10 mph becoming west southwest.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: A 10 percent chance of rain after 5am.  Partly cloudy, with a low around 49. South southwest wind 6 to 11 mph becoming southeast in the evening.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain likely, mainly after 4pm.  Mostly sunny, with a high near 70. South southeast wind 13 to 17 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance Rain
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain.  Patchy fog after 2am. Low around 52. South wind 6 to 11 mph becoming light southwest  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Rain and
    Patchy Fog

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm between 11am and 5pm, then a chance of showers and thunderstorms after 5pm.  High near 62. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of rain after 8pm.  Mostly cloudy, with a low around 49. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of rain.  Mostly sunny, with a high near 65.

    High: 65 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. Northwest wind 7 to 10 mph becoming west southwest.
Tonight
A 10 percent chance of rain after 5am. Partly cloudy, with a low around 49. South southwest wind 6 to 11 mph becoming southeast in the evening.
Monday
Rain likely, mainly after 4pm. Mostly sunny, with a high near 70. South southeast wind 13 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. Patchy fog after 2am. Low around 52. South wind 6 to 11 mph becoming light southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain before 11am, then showers and possibly a thunderstorm between 11am and 5pm, then a chance of showers and thunderstorms after 5pm. High near 62. South southwest wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of rain after 8pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of rain. Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 71.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 49.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.4°N 122.03°W (Elev. 46 ft)
1:26 pm PDT Apr 19, 2026
1pm PDT Apr 19, 2026-6pm PDT Apr 25, 2026
 
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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