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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

Lat: 41.77375°NLon: 122.46817°WElev: 2644.0ft.

Clear

90°F

32°C

Humidity 13%
Wind Speed NNW 4 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 03 Oct 05:35 PM PDT
Extended Forecast for

Etna CA

  • Tonight

    Tonight: Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming south southwest in the evening.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 89. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 89 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 57. North northwest wind 5 to 10 mph becoming south after midnight.

    Low: 57 °F

    Gradual
    Clearing

  • Monday

    Monday: Sunny, with a high near 90. Light and variable wind.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. North northwest wind around 6 mph becoming light and variable in the evening.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming south southwest in the evening.
Sunday
Increasing clouds, with a high near 89. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 57. North northwest wind 5 to 10 mph becoming south after midnight.
Monday
Sunny, with a high near 90. Light and variable wind.
Monday Night
Mostly clear, with a low around 56. North northwest wind around 6 mph becoming light and variable in the evening.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Clear, with a low around 55.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Clear, with a low around 55.
Thursday
Sunny, with a high near 90.
Thursday Night
Clear, with a low around 55.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 43.
Saturday
A slight chance of rain. Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Etna CA
 41.46°N 122.9°W (Elev. 3061 ft)
Last Update:
4:40 pm PDT Oct 3, 2026
Forecast Valid:
6pm PDT Oct 3, 2026-6pm PDT Oct 10, 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