Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Clear

52°F

11°C

Humidity 62%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 39°F (4°C)
Visibility 9.00 mi
Last update 18 Apr 03:15 AM PDT
Extended Forecast for

Sunnyvale CA

  • Overnight

    Overnight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 49. West southwest wind 6 to 9 mph becoming south southeast after midnight.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers, mainly after 11am.  Partly sunny, with a high near 72. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am.  Low around 51. Chance of precipitation is 80%.

    Low: 51 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  Mostly cloudy, with a high near 64.

    High: 64 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a chance of rain after 11pm.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Calm wind.
Saturday
Mostly sunny, with a high near 77. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 50. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 49. West southwest wind 6 to 9 mph becoming south southeast after midnight.
Monday
A 40 percent chance of showers, mainly after 11am. Partly sunny, with a high near 72. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers and thunderstorms before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Low around 51. Chance of precipitation is 80%.
Tuesday
Showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 64.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a chance of rain after 11pm. Mostly cloudy, with a low around 48.
Wednesday
A slight chance of rain before 11am. Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 46.
Friday
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)
1:41 am PDT Apr 18, 2026
3am PDT Apr 18, 2026-6pm PDT Apr 24, 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