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

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

52°F

11°C

Humidity 95%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 10 Apr 08:52 PM PDT
Extended Forecast for

16 Miles NE Happy Camp CA

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

    Tonight: Rain likely, mainly before midnight.  Snow level 6600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a low around 43. South wind around 6 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Rain Likely

  • Saturday

    Saturday: Rain showers before 4pm, then rain, possibly mixed with snow showers. Some thunder is also possible.  Snow level 5700 feet. High near 47. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 47 °F

    Showers then
    Rain/Snow

  • Saturday Night

    Saturday Night: Rain, possibly mixed with snow, becoming all rain after 8pm.  Snow level 5100 feet. Steady temperature around 41. West wind around 6 mph becoming north northeast in the evening.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 41 °F

    Rain/Snow
    then Rain
    Likely

  • Sunday

    Sunday: Rain showers likely before 11am, then rain, possibly mixed with snow showers between 11am and 2pm, then rain showers after 2pm. Some thunder is also possible.  Snow level 4300 feet rising to 5000 feet in the afternoon. High near 45. South wind 6 to 8 mph becoming west in the afternoon.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain likely, mainly before 11pm.  Snow level 5100 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 39. West wind 5 to 8 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain Likely
    then Chance
    Rain

  • Monday

    Monday: Rain likely, mainly after 11am.  Snow level 4000 feet rising to 5100 feet in the afternoon. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.

    High: 46 °F

    Rain Likely

  • Monday Night

    Monday Night: A 30 percent chance of rain before 11pm.  Snow level 5400 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly after 11pm.  Snow level 5700 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Rain likely, mainly before midnight. Snow level 6600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a low around 43. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain showers before 4pm, then rain, possibly mixed with snow showers. Some thunder is also possible. Snow level 5700 feet. High near 47. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday Night
Rain, possibly mixed with snow, becoming all rain after 8pm. Snow level 5100 feet. Steady temperature around 41. West wind around 6 mph becoming north northeast in the evening. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday
Rain showers likely before 11am, then rain, possibly mixed with snow showers between 11am and 2pm, then rain showers after 2pm. Some thunder is also possible. Snow level 4300 feet rising to 5000 feet in the afternoon. High near 45. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain likely, mainly before 11pm. Snow level 5100 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 39. West wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain likely, mainly after 11am. Snow level 4000 feet rising to 5100 feet in the afternoon. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of rain before 11pm. Snow level 5400 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
A chance of rain, mainly after 11pm. Snow level 5700 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 39.
Wednesday
Rain likely. Snow level 4400 feet rising to 4900 feet in the afternoon. Mostly cloudy, with a high near 45.
Wednesday Night
A chance of rain and snow. Snow level 4800 feet lowering to 3000 feet after midnight . Mostly cloudy, with a low around 32.
Thursday
Sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 34.
Friday
A slight chance of rain. Snow level 3500 feet rising to 5200 feet in the afternoon. Sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NE Happy Camp CA
 41.97°N 123.17°W (Elev. 2999 ft)
4:41 pm PDT Apr 10, 2026
9pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026
 
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