National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

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

Overcast

59°F

15°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 09 Apr 01:55 AM PDT
Extended Forecast for

Sunnyvale CA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A chance of rain, mainly between 1am and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 68. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then rain likely after 11pm. Mostly cloudy, with a low around 52. South wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 63. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then rain after 2am. Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 60.

    High: 60 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of rain before 11pm. Partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 53. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
A chance of rain, mainly between 1am and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 68. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then rain likely after 11pm. Mostly cloudy, with a low around 52. South wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 63. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 2am, then rain after 2am. Low around 46. Chance of precipitation is 90%.
Sunday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 60.
Sunday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale CA
 37.38°N 122.05°W (Elev. 118 ft)
Last Update:
1:26 am PDT Apr 9, 2026
Forecast Valid:
2am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation