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

46°F

8°C

Humidity 81%
Wind Speed E 3 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 02:35 AM PDT
Extended Forecast for

3 Miles W Yreka CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. Calm wind becoming west northwest around 5 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Light and variable wind becoming north 5 to 10 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. North wind 5 to 9 mph becoming light and variable in the evening.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. Calm wind becoming west northwest around 5 mph.
Saturday
Mostly sunny, with a high near 66. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 37. North wind 5 to 9 mph becoming light and variable in the evening.
Sunday
Mostly sunny, with a high near 64. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 41. Light and variable wind.
Monday
Mostly sunny, with a high near 69.
Monday Night
Mostly cloudy, with a low around 46.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Yreka CA
 41.72°N 122.68°W (Elev. 3199 ft)
Last Update:
2:46 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