Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

99°F

37°C

Humidity 20%
Wind Speed N 10 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 14 Jul 01:30 PM PDT
Extended Forecast for

Etna CA

Heat Advisory July 15, 08:00pm until July 16, 08:00pm
Extreme Heat Warning July 14, 01:57pm until July 15, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning July 14, 01:57pm until July 15, 08:00pm

    NOW until 8:00pm Tue

    Extreme Heat Warning

  • This Afternoon

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Patchy smoke. Clear, with a low around 61. North northwest wind 6 to 11 mph becoming light.

    Low: 61 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Tuesday

    Tuesday: Patchy smoke. Sunny and hot, with a high near 97. Light and variable wind.

    High: 97 °F

    Patchy Smoke

  • Tuesday Night

    Tuesday Night: Widespread smoke before midnight. Clear, with a low around 63. Northwest wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 63 °F

    Smoke then
    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Light and variable wind becoming northwest around 6 mph in the afternoon.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 2pm. Patchy smoke. Sunny and hot, with a high near 99. North wind 6 to 8 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Patchy smoke. Clear, with a low around 61. North northwest wind 6 to 11 mph becoming light.
Tuesday
Patchy smoke. Sunny and hot, with a high near 97. Light and variable wind.
Tuesday Night
Widespread smoke before midnight. Clear, with a low around 63. Northwest wind 5 to 8 mph becoming light and variable after midnight.
Wednesday
Sunny and hot, with a high near 96. Light and variable wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Etna CA
 41.46°N 122.9°W (Elev. 3061 ft)
1:41 pm PDT Jul 14, 2025
1pm PDT Jul 14, 2025-6pm PDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database