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.

Overcast

53°F

12°C

Humidity 68%
Wind Speed SE 15 G 21 mph
Barometer 30.38 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Apr 11:35 am CDT
Extended Forecast for

Savanna IL

  • Today

    Today: A 40 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 56. Southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 52. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 73. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 60. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 56. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 52. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 73. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 60. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 78.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 56.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 78.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 57.
Friday
A 40 percent chance of showers. Mostly sunny, with a high near 75.
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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:
11:47 am CDT Apr 11, 2026
Forecast Valid:
11am CDT Apr 11, 2026-6pm CDT Apr 17, 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