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.

Partly Cloudy

74°F

23°C

Humidity 58%
Wind Speed S 16 G 25 mph
Barometer 29.86 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Apr 11:35 am CDT
Extended Forecast for

Savanna IL

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 73. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%.

    High: 73 °F

    Showers and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Low around 59. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Showers then
    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Partly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 60. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    T-storms then
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 73. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms, mainly before 11pm. Low around 59. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 60. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 56.
Friday
A 50 percent chance of showers. Mostly sunny, with a high near 80.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.13°W (Elev. 623 ft)
Last Update:
6:32 am CDT Apr 12, 2026
Forecast Valid:
11am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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