Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

NA

53°F

12°C

Humidity 76%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 12 Apr 12:52 PM PDT
Extended Forecast for

13 Miles NE Happy Camp CA

Winter Weather Advisory April 12, 01:03pm until April 12, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory April 12, 01:03pm until April 12, 05:00pm

    NOW until 5:00pm Sun

    Winter Weather Advisory

  • This Afternoon

    High: 36 °F

    Snow Showers

  • Tonight

    Tonight: Snow showers likely before 10pm, then a chance of snow after 3am. Some thunder is also possible.  Mostly cloudy, with a low around 30. West wind 8 to 11 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Snow Showers
    Likely then
    Chance Snow

  • Monday

    Monday: A chance of snow before 8am, then a chance of snow after 11am.  Partly sunny, with a high near 36. West wind 7 to 13 mph.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow

  • Monday Night

    Monday Night: A 20 percent chance of snow before 11pm.  Mostly cloudy, with a low around 33. West northwest wind 7 to 13 mph.

    Low: 33 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41. West southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 41 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 11pm.  Mostly cloudy, with a low around 32. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Snow Likely

  • Wednesday

    Wednesday: Snow before 5pm, then snow, possibly mixed with rain.  High near 35. Breezy.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 35 °F

    Breezy. Snow
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow likely, becoming all snow after 8pm.  Mostly cloudy, with a low around 24.

    Low: 24 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Snow showers. Some thunder is also possible. High near 36. South wind around 11 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow showers likely before 10pm, then a chance of snow after 3am. Some thunder is also possible. Mostly cloudy, with a low around 30. West wind 8 to 11 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday
A chance of snow before 8am, then a chance of snow after 11am. Partly sunny, with a high near 36. West wind 7 to 13 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 33. West northwest wind 7 to 13 mph.
Tuesday
Partly sunny, with a high near 41. West southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 32. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
Snow before 5pm, then snow, possibly mixed with rain. High near 35. Breezy. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Wednesday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 24.
Thursday
A slight chance of snow before 11am. Sunny, with a high near 35.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 51.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NE Happy Camp CA
 41.93°N 123.18°W (Elev. 5801 ft)
11:26 am PDT Apr 12, 2026
1pm PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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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