Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Mostly Cloudy

75°F

24°C

Humidity 50%
Wind Speed WSW 6 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 29 Sep 01:55 PM PDT
Extended Forecast for

Sunnyvale CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 73. Southwest wind around 10 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of rain.  Mostly cloudy, with a low around 61. South southeast wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 61 °F

    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain before 11am.  Mostly sunny, with a high near 74. Light and variable wind becoming west southwest 5 to 10 mph in the morning.

    High: 74 °F

    Slight Chance
    Rain then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain.  Mostly cloudy, with a high near 70. South southeast wind 3 to 6 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 73. Southwest wind around 10 mph.
Tonight
A 30 percent chance of rain. Mostly cloudy, with a low around 61. South southeast wind 5 to 7 mph becoming light and variable after midnight.
Tuesday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 74. Light and variable wind becoming west southwest 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 60. West southwest wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 70. South southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 74.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.02°W (Elev. 92 ft)
1:26 pm PDT Sep 29, 2025
2pm PDT Sep 29, 2025-6pm PDT Oct 5, 2025
 
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Additional Resources

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