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

49°F

9°C

Humidity 68%
Wind Speed WSW 4 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Wind Chill48°F (9°C)
Last update 14 Apr 07:52 PM PDT
Extended Forecast for

15 Miles ESE Cave Junction OR

  • Tonight

    Tonight: Rain likely, mainly between 2am and 5am. Snow level 4800 feet. Mostly cloudy, with a low around 37. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain before 4pm, then a slight chance of rain and snow. Snow level 5500 feet lowering to 4000 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%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow likely, possibly mixed with rain, becoming all snow after 8pm. Mostly cloudy, with a low around 28. West northwest wind 5 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before 11am. 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

    Slight Chance
    Snow then
    Sunny

  • Thursday Night

    Thursday Night: Widespread frost after 11pm. Otherwise, mostly clear, with a low around 31. East northeast wind 6 to 11 mph.

    Low: 31 °F

    Frost

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

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

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am. Snow level 5000 feet rising to 6500 feet in the afternoon. Partly sunny, with a high near 59.

    High: 59 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm. Snow level 7000 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

Detailed Forecast

Tonight
Rain likely, mainly between 2am and 5am. Snow level 4800 feet. Mostly cloudy, with a low around 37. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain before 4pm, then a slight chance of rain and snow. Snow level 5500 feet lowering to 4000 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%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow likely, possibly mixed with rain, becoming all snow after 8pm. Mostly cloudy, with a low around 28. West northwest wind 5 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. 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. 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 31. East northeast wind 6 to 11 mph.
Friday
Sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 40.
Saturday
A slight chance of rain after 11am. Snow level 5000 feet rising to 6500 feet in the afternoon. Partly sunny, with a high near 59.
Saturday Night
Rain likely, mainly after 11pm. Snow level 7000 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 43.
Sunday
Rain. Snow level 5600 feet lowering to 4900 feet. Mostly cloudy, with a high near 48.
Sunday Night
Rain and snow. Snow level 5100 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 39.
Monday
Rain and snow likely. Snow level 4100 feet rising to 4800 feet in the afternoon. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain and snow. Snow level 5000 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 39.
Tuesday
A chance of rain and snow. Snow level 4400 feet rising to 5400 feet in the afternoon. Partly sunny, with a high near 51.
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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:
7:27 pm PDT Apr 14, 2026
Forecast Valid:
8pm PDT Apr 14, 2026-6pm PDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation