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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

46°F

8°C

Humidity 78%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 12 Apr 11:52 PM PDT
Extended Forecast for

7 Miles SW Illinois Valley OR

  • Overnight

    Overnight: A 30 percent chance of showers after 5am. Snow level 4400 feet. Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers, mainly before 2pm. Snow level 4600 feet. Partly sunny, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 50 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. West wind 5 to 7 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. Light west northwest wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Showers, mainly after 11pm. Snow level 4000 feet rising to 4600 feet after midnight. Low around 40. South southwest wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Showers

  • Wednesday

    Wednesday: Showers. Snow level 5200 feet lowering to 4300 feet in the afternoon . High near 46. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 46 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers likely before 8pm, then rain likely, possibly mixed with snow showers between 8pm and 11pm, then a chance of snow showers after 11pm. Snow level 3700 feet lowering to 2400 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Thursday

    Thursday: A slight chance of snow before 11am. Snow level rising to 3400 feet in the afternoon. Mostly sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Snow then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers after 5am. Snow level 4400 feet. Partly cloudy, with a low around 37. Calm wind.
Monday
A 50 percent chance of showers, mainly before 2pm. Snow level 4600 feet. Partly sunny, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. West wind 5 to 7 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 52. Light west northwest wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Showers, mainly after 11pm. Snow level 4000 feet rising to 4600 feet after midnight. Low around 40. South southwest wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers. Snow level 5200 feet lowering to 4300 feet in the afternoon . High near 46. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
Rain showers likely before 8pm, then rain likely, possibly mixed with snow showers between 8pm and 11pm, then a chance of snow showers after 11pm. Snow level 3700 feet lowering to 2400 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
A slight chance of snow before 11am. Snow level rising to 3400 feet in the afternoon. Mostly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 31.
Friday
Mostly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 61.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 42.
Sunday
A chance of rain. Snow level 5200 feet lowering to 4500 feet. Partly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Illinois Valley OR
 42.03°N 123.78°W (Elev. 2428 ft)
Last Update:
11:51 pm PDT Apr 12, 2026
Forecast Valid:
12am PDT Apr 13, 2026-6pm PDT Apr 19, 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