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.

Light Snow

24°F

-4°C

Humidity 87%
Wind Speed SE 10 mph
Barometer 29.97 in
Dewpoint 21°F (-6°C)
Visibility 4.00 mi
Wind Chill14°F (-10°C)
Last update 18 Mar 4:55 am CDT
Extended Forecast for

Savanna IL

  • Overnight

    Overnight: A chance of flurries. Cloudy, with a steady temperature around 24. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Chance
    Flurries

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind 5 to 10 mph becoming southwest in the afternoon.

    High: 40 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Cloudy, with a low around 32. Southwest wind around 5 mph becoming calm.

    Low: 32 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday

    Thursday: Partly sunny, with a high near 52. Calm wind becoming northeast around 5 mph.

    High: 52 °F

    Partly Sunny

  • Thursday Night

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

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Friday Night

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

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of flurries. Cloudy, with a steady temperature around 24. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind 5 to 10 mph becoming southwest in the afternoon.
Wednesday Night
A 20 percent chance of rain after 1am. Cloudy, with a low around 32. Southwest wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 52. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 65.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Mostly cloudy, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly cloudy, with a high near 52.
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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:
4:42 am CDT Mar 18, 2026
Forecast Valid:
5am CDT Mar 18, 2026-6pm CDT Mar 24, 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