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

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Fog

52°F

11°C

Humidity 100%
Wind Speed SE 3 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 52°F (11°C)
Visibility 0.50 mi
Last update 09 Apr 01:35 AM PDT
Extended Forecast for

4 Miles W Saint Helena CA

  • Overnight

    Overnight: Partly cloudy, with a low around 56. West wind 3 to 5 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and thunderstorms before 4pm, then a chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 61. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms, then rain likely after 1am. Mostly cloudy, with a steady temperature around 57. West southwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, then showers and possibly a thunderstorm after 8am. High near 57. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 57 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 50. South southwest wind 6 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: 50 °F

    Showers

  • Saturday

    Saturday: Rain before 11am, then showers and possibly a thunderstorm after 11am. High near 57. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then rain likely after 2am. Low around 48. Chance of precipitation is 90%.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Rain before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 52.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Partly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain
    then Partly
    Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. West wind 3 to 5 mph.
Thursday
A chance of rain and thunderstorms before 4pm, then a chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 61. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of rain and thunderstorms, then rain likely after 1am. Mostly cloudy, with a steady temperature around 57. West southwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Rain likely, then showers and possibly a thunderstorm after 8am. High near 57. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 50. South southwest wind 6 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
Rain before 11am, then showers and possibly a thunderstorm after 11am. High near 57. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and possibly a thunderstorm, mainly before 2am, then rain likely after 2am. Low around 48. Chance of precipitation is 90%.
Sunday
Rain before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 52.
Sunday Night
A chance of rain before 11pm. Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Saint Helena CA
 38.52°N 122.55°W (Elev. 1998 ft)
Last Update:
1:26 am PDT Apr 9, 2026
Forecast Valid:
1am 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