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

78°F

26°C

Humidity 70%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 6 Jun 9:55 pm CDT
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67. Southeast wind around 5 mph.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 84. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 84 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind around 5 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers, with thunderstorms also possible after 10am. High near 85. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly clear, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67. Southeast wind around 5 mph.
Sunday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 84. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind around 5 mph. Chance of precipitation is 60%.
Monday
Showers, with thunderstorms also possible after 10am. High near 85. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Wednesday
Mostly sunny and hot, with a high near 96.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly clear, with a low around 70. Chance of precipitation is 60%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 50%.
Thursday Night
A 40 percent chance of showers. Partly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 90.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 87.
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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:
7:51 pm CDT Jun 6, 2026
Forecast Valid:
10pm CDT Jun 6, 2026-6pm CDT Jun 13, 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