Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather 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 CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

36°F

2°C

Humidity 100%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 14 Apr 07:52 AM PDT
Extended Forecast for

16 Miles SE Agness OR

  • Today

    Today: A 30 percent chance of rain, mainly after 4pm.  Snow level 3400 feet rising to 4400 feet in the afternoon. Partly sunny, with a high near 48. Light west wind becoming west southwest 5 to 10 mph in the afternoon.

    High: 48 °F

    Mostly Sunny
    then Chance
    Rain

  • Tonight

    Tonight: Rain, mainly after 8pm.  Snow level 4200 feet rising to 4900 feet after midnight. Low around 42. South southwest wind around 11 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Snow level 5000 feet lowering to 3200 feet in the afternoon . High near 44. South southwest wind 13 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and snow likely, becoming all snow after 8pm.  Mostly cloudy, with a low around 35. West northwest wind 8 to 13 mph becoming light  after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow before 11am.  Snow level rising to 3300 feet in the afternoon. Mostly sunny, with a high near 48. Light north northwest wind becoming north 5 to 10 mph in the afternoon.  Little or no snow accumulation expected.

    High: 48 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am.  Snow level 4400 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 59.

    High: 59 °F

    Slight Chance
    Rain

Detailed Forecast

Today
A 30 percent chance of rain, mainly after 4pm. Snow level 3400 feet rising to 4400 feet in the afternoon. Partly sunny, with a high near 48. Light west wind becoming west southwest 5 to 10 mph in the afternoon.
Tonight
Rain, mainly after 8pm. Snow level 4200 feet rising to 4900 feet after midnight. Low around 42. South southwest wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. Snow level 5000 feet lowering to 3200 feet in the afternoon . High near 44. South southwest wind 13 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 35. West northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A 30 percent chance of snow before 11am. Snow level rising to 3300 feet in the afternoon. Mostly sunny, with a high near 48. Light north northwest wind becoming north 5 to 10 mph in the afternoon. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 35.
Friday
Mostly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
A slight chance of rain after 11am. Snow level 4400 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 59.
Saturday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 47.
Sunday
Rain. Snow level 6100 feet lowering to 4800 feet in the afternoon . Cloudy, with a high near 49.
Sunday Night
Rain. Snow level 4600 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 42.
Monday
Rain likely. Snow level 3800 feet rising to 4400 feet in the afternoon. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
5:16 am PDT Apr 14, 2026
8am PDT Apr 14, 2026-6pm PDT Apr 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

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