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.

Fair

63°F

17°C

Humidity 52%
Wind Speed S 8 mph
Barometer 29.79 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 25 Mar 8:15 pm CDT
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: Partly cloudy, with a low around 48. South wind 5 to 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 71. South wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 71 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 31. Blustery, with a northeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Showers and
    Blustery

  • Friday

    Friday: Mostly sunny, with a high near 48. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Clear, with a low around 24.

    Low: 24 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. South wind 5 to 10 mph.
Thursday
A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 71. South wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 7pm, then a chance of rain between 7pm and 1am. Mostly cloudy, with a low around 31. Blustery, with a northeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 48. North wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 24.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 70.
Monday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 48.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 71.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 53.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 68.
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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:
8:11 pm CDT Mar 25, 2026
Forecast Valid:
8pm CDT Mar 25, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation