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

46°F

8°C

Humidity 90%
Wind Speed Calm
Barometer 29.68 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 26 Mar 4:35 am CDT
Extended Forecast for

Savanna IL

  • Today

    Today: A chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 70. Light and variable wind becoming northeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 70 °F

    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 28. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 48. Northwest 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 23. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 23 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Saturday Night

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

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 70. Light and variable wind becoming northeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, with a low around 28. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 48. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 23. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 51.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 74.
Monday Night
A chance of rain and thunderstorms, then rain likely after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 67.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 52.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 69.
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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:
2:41 am CDT Mar 26, 2026
Forecast Valid:
4am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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