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

51°F

11°C

Humidity 94%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 11 Apr 02:52 PM PDT
Extended Forecast for

11 Miles WSW Wilderville OR

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm.  Snow level 5200 feet. High near 42. South wind 6 to 8 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 42 °F

    Showers

  • Tonight

    Tonight: Rain showers before 2am, then snow showers, possibly mixed with rain.  Snow level 5200 feet lowering to 4400 feet after midnight . Low around 36. Northeast wind 5 to 8 mph becoming calm.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 36 °F

    Showers then
    Rain/Snow

  • Sunday

    Sunday: Rain and snow showers likely before 2pm, then rain showers between 2pm and 4pm, then rain likely, possibly mixed with snow showers after 4pm.  Snow level rising to 4800 feet in the afternoon. High near 41. Calm wind becoming west 5 to 9 mph in the afternoon.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain, possibly mixed with snow showers, mainly before 11pm.  Snow level 4500 feet. Low around 40. West wind 9 to 13 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 40 °F

    Rain/Snow
    then Chance
    Rain/Snow

  • Monday

    Monday: Snow showers likely before 11am, then rain and snow showers likely between 11am and 2pm, then rain showers likely after 2pm.  Snow level rising to 4600 feet in the afternoon. Mostly cloudy, with a high near 41. West northwest wind 6 to 8 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    Likely

  • Monday Night

    Monday Night: A chance of rain showers, mixing with snow after 8pm, then gradually ending.  Snow level 4800 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 38. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 38 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 11pm.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain.  Snow level 4600 feet. Cloudy, with a high near 41.

    High: 41 °F

    Rain

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Snow level 5200 feet. High near 42. South wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain showers before 2am, then snow showers, possibly mixed with rain. Snow level 5200 feet lowering to 4400 feet after midnight . Low around 36. Northeast wind 5 to 8 mph becoming calm. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Rain and snow showers likely before 2pm, then rain showers between 2pm and 4pm, then rain likely, possibly mixed with snow showers after 4pm. Snow level rising to 4800 feet in the afternoon. High near 41. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday Night
Rain, possibly mixed with snow showers, mainly before 11pm. Snow level 4500 feet. Low around 40. West wind 9 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Snow showers likely before 11am, then rain and snow showers likely between 11am and 2pm, then rain showers likely after 2pm. Snow level rising to 4600 feet in the afternoon. Mostly cloudy, with a high near 41. West northwest wind 6 to 8 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday Night
A chance of rain showers, mixing with snow after 8pm, then gradually ending. Snow level 4800 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 38. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 39.
Wednesday
Rain. Snow level 4600 feet. Cloudy, with a high near 41.
Wednesday Night
Rain and snow likely before 11pm, then a chance of snow. Mostly cloudy, with a low around 31.
Thursday
Sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 38.
Saturday
A chance of rain. Snow level 5000 feet rising to 6100 feet in the afternoon. Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Wilderville OR
 42.34°N 123.66°W (Elev. 4183 ft)
2:47 pm PDT Apr 11, 2026
3pm PDT Apr 11, 2026-6pm PDT Apr 18, 2026
 
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