National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Fair

65°F

18°C

Humidity 94%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 28 Aug 10:35 pm CDT
Extended Forecast for

Mount Carroll IL

  • Tonight

    Tonight: Partly cloudy, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 80. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. South wind around 5 mph.
Saturday
Mostly cloudy, with a high near 80. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 72.
Monday
Partly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Partly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Carroll IL
 42.09°N 89.98°W (Elev. 778 ft)
Last Update:
5:46 pm CDT Aug 28, 2026
Forecast Valid:
10pm CDT Aug 28, 2026-6pm CDT Sep 4, 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