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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

48°F

9°C

Humidity 76%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 01:53 AM PDT
Extended Forecast for

6 Miles WSW Fort Jones CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. North northwest wind 6 to 11 mph becoming light and variable in the evening.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 70. Calm wind.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Light and variable wind.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain, mainly after 11am. Mostly sunny, with a high near 72.

    High: 72 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain. Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. Calm wind.
Saturday
Mostly sunny, with a high near 71. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 28. North northwest wind 6 to 11 mph becoming light and variable in the evening.
Sunday
Mostly sunny, with a high near 70. Calm wind.
Sunday Night
Partly cloudy, with a low around 35. Light and variable wind.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
A chance of rain, mainly after 11am. Mostly sunny, with a high near 72.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 37.
Wednesday
A slight chance of rain before 11am. Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Fort Jones CA
 41.58°N 122.97°W (Elev. 2946 ft)
Last Update:
1:41 am PDT Mar 21, 2026
Forecast Valid:
2am PDT Mar 21, 2026-6pm PDT Mar 27, 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