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

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Fair

53°F

12°C

Humidity 35%
Wind Speed W 13 mph
Barometer 30.22 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 5 Apr 2:15 pm CDT
Extended Forecast for

Savanna IL

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 51. West wind around 15 mph, with gusts as high as 25 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: A chance of showers between 10pm and midnight. Increasing clouds, with a low around 34. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 34 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 24. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers. Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 51. West wind around 15 mph, with gusts as high as 25 mph.
Tonight
A chance of showers between 10pm and midnight. Increasing clouds, with a low around 34. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 47. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 24. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 64.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 61.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 42.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 65.
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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:
1:46 pm CDT Apr 5, 2026
Forecast Valid:
2pm CDT Apr 5, 2026-6pm CDT Apr 11, 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