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

48°F

9°C

Humidity 73%
Wind Speed N 9 mph
Barometer 30.29 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 10 Apr 11:15 am CDT
Extended Forecast for

Savanna IL

  • Today

    Today: Mostly sunny, with a high near 57. Northwest wind around 10 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. North wind around 5 mph becoming east after midnight.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers after 1pm. Increasing clouds, with a high near 59. Southeast wind 5 to 10 mph.

    High: 59 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.

    High: 73 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 57. Northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 36. North wind around 5 mph becoming east after midnight.
Saturday
A 40 percent chance of showers after 1pm. Increasing clouds, with a high near 59. Southeast wind 5 to 10 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 60.
Monday
Partly sunny, with a high near 78.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 58. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 71.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 51.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 76.
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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:
10:56 am CDT Apr 10, 2026
Forecast Valid:
11am CDT Apr 10, 2026-6pm CDT Apr 16, 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