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Hazardous Weather Conditions

Current conditions at

KF6YUA Sebastopol (AR323)

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

NA

100°F

38°C

Humidity 20%
Wind Speed WSW 0 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 52°F (11°C)
Visibility NA
Heat Index97°F (36°C)
Last update 03 Oct 02:52 PM PDT
Extended Forecast for

7 Miles SSW Saint Helena CA

Heat Advisory October 3, 03:09pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 3, 03:09pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • Tonight

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy and hot, with a high near 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming clear, with a low around 64. Calm wind.

    Low: 64 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny and hot, with a high near 100. Light and variable wind.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 65. West southwest wind around 6 mph becoming calm in the evening.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 65. Calm wind.
Sunday
Mostly cloudy and hot, with a high near 99. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, then gradually becoming clear, with a low around 64. Calm wind.
Monday
Sunny and hot, with a high near 100. Light and variable wind.
Monday Night
Clear, with a low around 65. West southwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 59.
Friday
A slight chance of rain. Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Saint Helena CA
 38.41°N 122.55°W (Elev. 492 ft)
Last Update:
1:30 pm PDT Oct 3, 2026
Forecast Valid:
3pm PDT Oct 3, 2026-6pm PDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation