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.

Overcast

45°F

7°C

Humidity 84%
Wind Speed E 12 mph
Barometer 29.99 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 3 Apr 9:35 pm CDT
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: Showers and thunderstorms before 5am, then a chance of showers. Low around 45. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Showers

  • Saturday

    Saturday: A slight chance of showers before 7am, then a slight chance of showers after 4pm. Mostly cloudy, with a temperature falling to around 46 by 9am. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 49 °F⇓

    Cloudy then
    Slight Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. West wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53. West wind around 10 mph, with gusts as high as 20 mph.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers after 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.

    Low: 36 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Showers and thunderstorms before 5am, then a chance of showers. Low around 45. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A slight chance of showers before 7am, then a slight chance of showers after 4pm. Mostly cloudy, with a temperature falling to around 46 by 9am. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 33. West wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 53. West wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 33.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 23.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
A chance of rain and snow showers after 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 44.
Friday
Showers likely. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
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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:
5:31 pm CDT Apr 3, 2026
Forecast Valid:
9pm CDT Apr 3, 2026-6pm CDT Apr 10, 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