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.

Partly Cloudy

36°F

2°C

Humidity 86%
Wind Speed SE 5 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 12 Apr 05:35 AM PDT
Extended Forecast for

17 Miles NNE Weed CA

  • Today

    Today: Snow likely before 3pm, then a chance of rain and snow showers. Some thunder is also possible.  Partly sunny, with a high near 46. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 46 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain and snow likely before 11pm, then a slight chance of snow between 11pm and 1am.  Mostly cloudy, with a low around 31. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 31 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Monday

    Monday: A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm.  Snow level rising to 5700 feet in the afternoon. Partly sunny, with a high near 48. West southwest wind 6 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. West northwest wind 5 to 9 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 54 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before 2am, then a slight chance of rain between 2am and 5am, then a chance of rain and snow after 5am.  Snow level 6700 feet lowering to 5600 feet. Mostly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 8am, then rain likely.  Snow level 5400 feet rising to 6000 feet in the afternoon. Mostly cloudy, with a high near 47. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 8pm, then a chance of snow.  Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Thursday

    Thursday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

Today
Snow likely before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 46. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Rain and snow likely before 11pm, then a slight chance of snow between 11pm and 1am. Mostly cloudy, with a low around 31. Southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday
A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Snow level rising to 5700 feet in the afternoon. Partly sunny, with a high near 48. West southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 30. West northwest wind 5 to 9 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 54. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
A slight chance of rain and snow before 2am, then a slight chance of rain between 2am and 5am, then a chance of rain and snow after 5am. Snow level 6700 feet lowering to 5600 feet. Mostly cloudy, with a low around 34. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 8am, then rain likely. Snow level 5400 feet rising to 6000 feet in the afternoon. Mostly cloudy, with a high near 47. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 22.
Thursday
Sunny, with a high near 46.
Thursday Night
Clear, with a low around 23.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 30.
Saturday
Mostly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles NNE Weed CA
 41.61°N 122.2°W (Elev. 4941 ft)
4:41 am PDT Apr 12, 2026
5am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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