Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Southern Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

42°F

6°C

Humidity 85%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 13 Apr 10:52 PM PDT
Extended Forecast for

9 Miles WNW Illinois Valley OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 4pm.  Snow level 3500 feet rising to 4300 feet in the afternoon. Increasing clouds, with a high near 44. Light west southwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 44 °F

    Partly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, possibly mixed with snow before 3am, then rain between 3am and 4am, then rain, possibly mixed with snow after 4am.  Snow level 4100 feet rising to 4800 feet after midnight. Low around 38. South southwest wind 13 to 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 38 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow.  Snow level 5100 feet lowering to 3600 feet in the afternoon . High near 41. Breezy, with a west wind 15 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 30. North northwest wind 6 to 14 mph, with gusts as high as 21 mph.  New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before 11am.  Mostly sunny, with a high near 45.

    High: 45 °F

    Slight Chance
    Snow then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Calm wind.
Tuesday
A 30 percent chance of rain, mainly after 4pm. Snow level 3500 feet rising to 4300 feet in the afternoon. Increasing clouds, with a high near 44. Light west southwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Rain likely, possibly mixed with snow before 3am, then rain between 3am and 4am, then rain, possibly mixed with snow after 4am. Snow level 4100 feet rising to 4800 feet after midnight. Low around 38. South southwest wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday
Rain and snow. Snow level 5100 feet lowering to 3600 feet in the afternoon . High near 41. Breezy, with a west wind 15 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 30. North northwest wind 6 to 14 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.
Thursday
A 20 percent chance of snow before 11am. Mostly sunny, with a high near 45.
Thursday Night
Mostly clear, with a low around 32.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
A slight chance of rain after 11am. Snow level 4400 feet rising to 5900 feet in the afternoon. Partly sunny, with a high near 54.
Saturday Night
Rain likely. Snow level 6500 feet. Mostly cloudy, with a low around 43.
Sunday
Rain. Snow level 6200 feet lowering to 4900 feet in the afternoon . Cloudy, with a high near 45.
Sunday Night
Rain and snow. Snow level 4600 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 38.
Monday
Rain and snow likely. Snow level 3800 feet rising to 4400 feet in the afternoon. Mostly cloudy, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WNW Illinois Valley OR
 42.15°N 123.85°W (Elev. 3356 ft)
11:26 pm PDT Apr 13, 2026
11pm PDT Apr 13, 2026-6pm PDT Apr 20, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database