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

Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

47°F

8°C

Humidity 94%
Wind Speed SSW 8 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 15 Apr 08:52 AM PDT
Extended Forecast for

15 Miles ESE Cave Junction OR

  • Today

    Today: Rain and snow before 4pm, then a chance of snow after 5pm. Snow level 5600 feet lowering to 3800 feet in the afternoon . High near 42. Southwest wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow

  • Tonight

    Tonight: A 40 percent chance of snow between 8pm and midnight. Mostly cloudy, with a low around 29. West northwest wind 5 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West northwest wind 5 to 13 mph becoming north in the morning. Winds could gust as high as 20 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Widespread frost after 11pm. Otherwise, mostly clear, with a low around 30. East northeast wind 6 to 11 mph.

    Low: 30 °F

    Frost

  • Friday

    Friday: Sunny, with a high near 55. East wind around 6 mph becoming north in the afternoon.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after 11am. Snow level 5500 feet rising to 7000 feet in the afternoon. Partly sunny, with a high near 60.

    High: 60 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm. Snow level 7400 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 45.

    Low: 45 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely. Snow level 5700 feet. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain Likely

Detailed Forecast

Today
Rain and snow before 4pm, then a chance of snow after 5pm. Snow level 5600 feet lowering to 3800 feet in the afternoon . High near 42. Southwest wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 40 percent chance of snow between 8pm and midnight. Mostly cloudy, with a low around 29. West northwest wind 5 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 45. West northwest wind 5 to 13 mph becoming north in the morning. Winds could gust as high as 20 mph.
Thursday Night
Widespread frost after 11pm. Otherwise, mostly clear, with a low around 30. East northeast wind 6 to 11 mph.
Friday
Sunny, with a high near 55. East wind around 6 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 40.
Saturday
A 20 percent chance of rain after 11am. Snow level 5500 feet rising to 7000 feet in the afternoon. Partly sunny, with a high near 60.
Saturday Night
Rain likely, mainly after 11pm. Snow level 7400 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 45.
Sunday
Rain likely. Snow level 5700 feet. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely, mainly before 11pm. Snow level 5700 feet lowering to 5000 feet after midnight . Mostly cloudy, with a low around 43.
Monday
Rain likely. Snow level 4900 feet rising to 5700 feet in the afternoon. Partly sunny, with a high near 56.
Monday Night
A chance of rain. Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 43.
Tuesday
A chance of rain. Snow level 5200 feet rising to 6100 feet in the afternoon. Partly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ESE Cave Junction OR
 42.12°N 123.36°W (Elev. 3658 ft)
Last Update:
5:56 am PDT Apr 15, 2026
Forecast Valid:
9am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation