Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Mist

46°F

8°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 45°F (7°C)
Visibility 3.00 mi
Last update 31 Jan 04:15 AM PST
Extended Forecast for

3 Miles NE Sunnyvale CA

Coastal Flood Advisory January 31, 05:09am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory January 31, 05:09am until February 1, 12:00pm

    NOW until 12:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 66. Calm wind becoming northwest 5 to 9 mph in the morning.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog between 1am and 4am.  Otherwise, partly cloudy, with a low around 44. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog between 7am and 9am.  Otherwise, sunny, with a high near 67. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Today
Partly sunny, with a high near 70. Calm wind becoming northwest around 5 mph in the afternoon.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 66. Calm wind becoming northwest 5 to 9 mph in the morning.
Sunday Night
Patchy fog between 1am and 4am. Otherwise, partly cloudy, with a low around 44. Northwest wind around 5 mph becoming calm in the evening.
Monday
Patchy fog between 7am and 9am. Otherwise, sunny, with a high near 67. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Sunnyvale CA
 37.41°N 121.97°W (Elev. 10 ft)
4:03 am PST Jan 31, 2026
5am PST Jan 31, 2026-6pm PST Feb 6, 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