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

Hazardous Weather Conditions

Current conditions at

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Fog/Mist

36°F

2°C

Humidity 93%
Wind Speed N 12 mph
Barometer 29.69 in
Dewpoint 34°F (1°C)
Visibility 4.00 mi
Wind Chill28°F (-2°C)
Last update 11 Mar 3:55 am CDT
Extended Forecast for

Savanna IL

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a low around 35. North wind around 10 mph.

    Low: 35 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain and snow before 3pm, then a slight chance of rain between 3pm and 4pm. Cloudy, with a high near 40. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 40 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 49. West wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

    High: 49 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Friday

    Friday: Partly sunny, with a high near 47. Breezy.

    High: 47 °F

    Partly Sunny
    and Breezy
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow. Cloudy, with a high near 43.

    High: 43 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. Chance of precipitation is 60%.

    Low: 32 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a low around 35. North wind around 10 mph.
Wednesday
A chance of rain and snow before 3pm, then a slight chance of rain between 3pm and 4pm. Cloudy, with a high near 40. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around 26. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Increasing clouds, with a high near 49. West wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 47. Breezy.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
A 30 percent chance of snow. Cloudy, with a high near 43.
Saturday Night
Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. Chance of precipitation is 60%.
Sunday
Rain and snow. High near 42. Breezy. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 12. Blustery.
Monday
Partly sunny, with a high near 28.
Monday Night
Mostly clear, with a low around 7.
Tuesday
Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.13°W (Elev. 623 ft)
Last Update:
3:51 am CDT Mar 11, 2026
Forecast Valid:
4am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation