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.

Mostly Cloudy

43°F

6°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 11 Apr 01:35 AM PDT
Extended Forecast for

5 Miles W Fort Jones CA

Winter Weather Advisory April 11, 08:00pm until April 12, 11:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Overnight

    Overnight: A 40 percent chance of rain, mainly between 3am and 5am.  Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely and possibly a thunderstorm before noon, then showers and possibly a thunderstorm between noon and 5pm, then rain and possibly a thunderstorm after 5pm.  Snow level 5900 feet. High near 50. Light and variable wind becoming south 5 to 10 mph in the afternoon.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Rain, mainly before 10pm.  Snow level 5500 feet lowering to 4100 feet after midnight . Low around 34. East southeast wind 5 to 8 mph becoming calm  after midnight.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Rain then
    Chance Rain

  • Sunday

    Sunday: A chance of rain, then showers and possibly a thunderstorm after 11am.  Snow level 3700 feet rising to 5000 feet in the afternoon. High near 50. Calm wind becoming west northwest 5 to 8 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 11pm.  Snow level 5200 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 34. West wind around 6 mph becoming calm  in the evening.

    Low: 34 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of rain, mainly between 3am and 5am. Mostly cloudy, with a low around 39. Calm wind.
Saturday
Rain likely and possibly a thunderstorm before noon, then showers and possibly a thunderstorm between noon and 5pm, then rain and possibly a thunderstorm after 5pm. Snow level 5900 feet. High near 50. Light and variable wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 10pm. Snow level 5500 feet lowering to 4100 feet after midnight . Low around 34. East southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A chance of rain, then showers and possibly a thunderstorm after 11am. Snow level 3700 feet rising to 5000 feet in the afternoon. High near 50. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of rain before 11pm. Snow level 5200 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 34. West wind around 6 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 52.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A chance of rain. Snow level 4300 feet rising to 5300 feet in the afternoon. Partly sunny, with a high near 51.
Wednesday Night
A slight chance of rain. Snow level 5200 feet lowering to 3200 feet after midnight . Partly cloudy, with a low around 30.
Thursday
Sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 29.
Friday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Fort Jones CA
 41.61°N 122.94°W (Elev. 2999 ft)
11:26 pm PDT Apr 10, 2026
1am PDT Apr 11, 2026-6pm PDT Apr 17, 2026
 
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Additional Resources

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