National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

68°F

20°C

Humidity 29%
Wind Speed WSW 4 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 19 Apr 01:52 PM PDT
Extended Forecast for

12 Miles NE Happy Camp CA

Winter Weather Advisory April 20, 11:00am until April 21, 11:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: A 10 percent chance of rain after 5pm. Snow level 7600 feet. Partly sunny, with a high near 55. South wind around 13 mph, with gusts as high as 20 mph.

    High: 55 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A slight chance of rain before 4am, then a slight chance of rain and snow between 4am and 5am, then a slight chance of rain after 5am. Snow level 7300 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 40. South southeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Monday

    Monday: A chance of snow before 10am, then rain, possibly mixed with snow. Snow level rising to 6300 feet in the afternoon. High near 42. Southeast wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Monday Night

    Monday Night: Rain, possibly mixed with snow, becoming all snow after 8pm. Low around 37. Southwest wind 8 to 10 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain/Snow
    then Snow
    Likely

  • Tuesday

    Tuesday: Snow showers before 2pm, then rain, possibly mixed with snow showers. Some thunder is also possible. High near 40. South southwest wind 8 to 10 mph becoming west northwest in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 40 °F

    Snow Showers
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Snow. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 36 °F

    Snow then
    Snow Likely

  • Wednesday

    Wednesday: Snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 41 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: A chance of snow before 11pm. Partly cloudy, with a low around 32.

    Low: 32 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

This Afternoon
A 10 percent chance of rain after 5pm. Snow level 7600 feet. Partly sunny, with a high near 55. South wind around 13 mph, with gusts as high as 20 mph.
Tonight
A slight chance of rain before 4am, then a slight chance of rain and snow between 4am and 5am, then a slight chance of rain after 5am. Snow level 7300 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 40. South southeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday
A chance of snow before 10am, then rain, possibly mixed with snow. Snow level rising to 6300 feet in the afternoon. High near 42. Southeast wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday Night
Rain, possibly mixed with snow, becoming all snow after 8pm. Low around 37. Southwest wind 8 to 10 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday
Snow showers before 2pm, then rain, possibly mixed with snow showers. Some thunder is also possible. High near 40. South southwest wind 8 to 10 mph becoming west northwest in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tuesday Night
Snow. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday
Snow likely. Mostly cloudy, with a high near 41. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
A chance of snow before 11pm. Partly cloudy, with a low around 32.
Thursday
Sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 39.
Saturday
A slight chance of rain. Snow level 6400 feet rising to 7100 feet in the afternoon. Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Happy Camp CA
 41.92°N 123.21°W (Elev. 5666 ft)
Last Update:
1:07 pm PDT Apr 19, 2026
Forecast Valid:
2pm PDT Apr 19, 2026-6pm PDT Apr 25, 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