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

76°F

24°C

Humidity 49%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 22 Apr 11:55 am CDT
Extended Forecast for

Savanna IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. South wind around 5 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. South wind around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 60. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Partly sunny, with a high near 72. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. South wind around 5 mph.
Tonight
Mostly clear, with a low around 57. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 80. South wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 60. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
Showers likely, mainly before 1pm. Partly sunny, with a high near 72. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 71.
Sunday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 63.
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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:
7:12 am CDT Apr 22, 2026
Forecast Valid:
12pm CDT Apr 22, 2026-6pm CDT Apr 28, 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