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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

KF6YUA Sebastopol (AR323)

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

NA

43°F

6°C

Humidity 99%
Wind Speed SE 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 43°F (6°C)
Visibility NA
Last update 18 Apr 05:38 AM PDT
Extended Forecast for

Graton CA

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Areas of fog after 2am. Otherwise, increasing clouds, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy
    then Areas
    Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 69 °F

    Areas Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers after 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 47. South southwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 62. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Patchy fog after 11pm. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am. Patchy fog before 8am. High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 45.

    Low: 45 °F

    Rain Likely
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of rain. Patchy fog before 10am. Otherwise, partly sunny, with a high near 66.

    High: 66 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind becoming south southwest around 5 mph in the afternoon.
Tonight
Areas of fog after 2am. Otherwise, increasing clouds, with a low around 45. Calm wind.
Sunday
Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
A 40 percent chance of showers after 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 47. South southwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 62. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Patchy fog after 11pm. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. Patchy fog before 8am. High near 62. Chance of precipitation is 90%.
Tuesday Night
Rain likely, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Patchy fog before 10am. Otherwise, partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 42.
Friday
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:
1:41 am PDT Apr 18, 2026
Forecast Valid:
5am PDT Apr 18, 2026-6pm PDT Apr 24, 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