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

KF6YUA Sebastopol (AR323)

Lat: 38.38033°NLon: 122.82367°WElev: 235.3ft.

NA

51°F

11°C

Humidity 97%
Wind Speed SE 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 50°F (10°C)
Visibility NA
Last update 08 Apr 11:38 PM PDT
Extended Forecast for

Graton CA

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Thursday

    Thursday: A chance of rain and thunderstorms before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain and thunderstorms after 5pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 67. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: A chance of rain before 10pm, then a chance of rain after 1am. Areas of fog after 10pm. Otherwise, increasing clouds, with a low around 50. Light and variable wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance Rain
    and Areas Fog

  • Friday

    Friday: Rain before 11am, then showers and possibly a thunderstorm after 11am. Areas of fog before 11am. High near 65. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers and
    Areas Fog

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Patchy fog after 11pm. Low around 49. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: Rain before 11am, then showers and possibly a thunderstorm after 11am. High near 60. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Patchy fog after 5am. Low around 43. Chance of precipitation is 90%.

    Low: 43 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 60.

    High: 60 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 53. Calm wind.
Thursday
A chance of rain and thunderstorms before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain and thunderstorms after 5pm. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 67. Calm wind becoming south southwest around 6 mph in the afternoon. 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 before 10pm, then a chance of rain after 1am. Areas of fog after 10pm. Otherwise, increasing clouds, with a low around 50. Light and variable wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain before 11am, then showers and possibly a thunderstorm after 11am. Areas of fog before 11am. High near 65. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Patchy fog after 11pm. Low around 49. South southwest wind around 6 mph becoming calm in the evening. 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 60. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Patchy fog after 5am. Low around 43. Chance of precipitation is 90%.
Sunday
Showers and possibly a thunderstorm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 60.
Sunday Night
A chance of rain before 11pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 41.
Monday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Graton CA
 38.43°N 122.84°W (Elev. 79 ft)
Last Update:
11:26 pm PDT Apr 8, 2026
Forecast Valid:
11pm PDT Apr 8, 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