Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

54°F

12°C

Humidity 58%
Wind Speed S 20 MPH
Barometer 29.7 in (1005.76 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 11 Apr 11:35 AM PDT
Extended Forecast for

Yreka CA

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 55. South southeast wind 6 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Showers

  • Tonight

    Tonight: Showers, mainly before 3am.  Snow level 5600 feet lowering to 4100 feet after midnight . Low around 35. South wind 5 to 10 mph becoming light east  after midnight.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm.  Snow level 3600 feet rising to 5100 feet in the afternoon. Partly sunny, with a high near 54. Calm wind becoming south 5 to 7 mph in the morning.  Chance of precipitation is 70%.

    High: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 11pm.  Snow level 5200 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 37. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 37 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 55. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain.  Snow level 4500 feet rising to 5600 feet in the afternoon. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 55. South southeast wind 6 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers, mainly before 3am. Snow level 5600 feet lowering to 4100 feet after midnight . Low around 35. South wind 5 to 10 mph becoming light east after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Snow level 3600 feet rising to 5100 feet in the afternoon. Partly sunny, with a high near 54. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers before 11pm. Snow level 5200 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 37. West northwest wind 5 to 8 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 55. Calm wind becoming west northwest around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A chance of rain. Snow level 4500 feet rising to 5600 feet in the afternoon. Mostly cloudy, with a high near 55.
Wednesday Night
A chance of rain before 11pm. Snow level 5500 feet lowering to 3000 feet after midnight . Mostly cloudy, with a low around 29.
Thursday
Sunny, with a high near 55.
Thursday Night
Clear, with a low around 28.
Friday
Sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Yreka CA
 41.75°N 122.62°W (Elev. 2726 ft)
11:26 am PDT Apr 11, 2026
11am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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Additional Resources

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