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

72°F

22°C

Humidity 34%
Wind Speed SW 8 mph
Barometer 29.66 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 9 Mar 4:35 pm CDT
Extended Forecast for

Savanna IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 72. Southwest wind around 5 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 59. East wind 5 to 15 mph.

    High: 59 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Low around 36. Northeast wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: A 50 percent chance of rain before 1pm. Mostly cloudy, with a high near 44.

    High: 44 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Friday

    Friday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 72. Southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 45. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 59. East wind 5 to 15 mph.
Tuesday Night
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Low around 36. Northeast wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 50 percent chance of rain before 1pm. Mostly cloudy, with a high near 44.
Wednesday Night
Mostly clear, with a low around 25.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Cloudy, with a high near 48.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.13°W (Elev. 623 ft)
Last Update:
1:26 pm CDT Mar 9, 2026
Forecast Valid:
4pm CDT Mar 9, 2026-6pm CDT Mar 15, 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