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.

Thunderstorm in Vicinity

51°F

11°C

Humidity 75%
Wind Speed N 12 mph
Barometer 29.95 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 26 Mar 7:15 pm CDT
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: A 40 percent chance of showers before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 27. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 27 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 48. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 48 °F

    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. Light west wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 27. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
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. Light west wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 74.
Monday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 75.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 49.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 63.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.16°W (Elev. 673 ft)
Last Update:
5:37 pm CDT Mar 26, 2026
Forecast Valid:
7pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation