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

64°F

18°C

Humidity 17%
Wind Speed N 10 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 19°F (-7°C)
Visibility 9.00 mi
Last update 17 Apr 11:35 AM PDT
Extended Forecast for

Sunnyvale CA

  • Today

    Today: Sunny, with a high near 73. North northwest wind 6 to 9 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. North northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 46 °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 5 to 7 mph becoming calm  in the evening.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 75. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers.  Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Rain likely, mainly after 11pm.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 65.

    High: 65 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 73. North northwest wind 6 to 9 mph.
Tonight
Partly cloudy, with a low around 46. North northwest wind 5 to 7 mph becoming calm in the evening.
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 5 to 7 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 75. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 49.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 70.
Monday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 51.
Tuesday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 65.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.05°W (Elev. 118 ft)
11:26 am PDT Apr 17, 2026
11am PDT Apr 17, 2026-6pm PDT Apr 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database