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 this afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Mostly Cloudy

64°F

18°C

Humidity 67%
Wind Speed E 4 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 09 Apr 11:53 AM PDT
Extended Forecast for

6 Miles SSW Saint Helena CA

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 65. West southwest wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a chance of showers after midnight. Mostly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 60. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 53. South southwest wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 11am. High near 56. South wind 6 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 11pm, then showers and possibly a thunderstorm after 11pm. Low around 49. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 53. Chance of precipitation is 90%.

    High: 53 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Partly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 65. West southwest wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers before 10pm, then a chance of showers after midnight. Mostly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 60. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm. Low around 53. South southwest wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers, with thunderstorms also possible after 11am. High near 56. South wind 6 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 11pm, then showers and possibly a thunderstorm after 11pm. Low around 49. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 53. Chance of precipitation is 90%.
Sunday Night
A chance of rain before 11pm. Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.43°N 122.52°W (Elev. 1093 ft)
Last Update:
11:46 am PDT Apr 9, 2026
Forecast Valid:
12pm PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation