Critical Fire Weather Conditions and Severe Thunderstorms Today

Scattered severe thunderstorms are possible across portions of the northern High Plains this afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin today and the southern High Plains on Thursday. Read More >

Current conditions at

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Fair

66°F

19°C

Humidity 31%
Wind Speed N 9 mph
Barometer 30.05 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 13 May 6:15 pm CDT
Extended Forecast for

Savanna IL

  • Tonight

    Tonight: Clear, with a low around 40. North wind 5 to 10 mph becoming light northeast  in the evening.

    Low: 40 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms between 2am and 4am, then a chance of showers after 4am.  Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%.

    Low: 54 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind around 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: A 40 percent chance of showers after 1am.  Partly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 40. North wind 5 to 10 mph becoming light northeast in the evening.
Thursday
Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms between 2am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind around 10 mph, with gusts as high as 20 mph.
Friday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 55.
Saturday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.16°W (Elev. 673 ft)
6:21 pm CDT May 13, 2026
6pm CDT May 13, 2026-6pm CDT May 20, 2026
 
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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