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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Mostly Cloudy

79°F

26°C

Humidity 51%
Wind Speed W 12 G 17 mph
Barometer 29.96 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Jun 12:45 pm CDT
Extended Forecast for

Frankfort IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. North northwest wind around 5 mph becoming east northeast in the evening. Winds could gust as high as 10 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 8am. Mostly cloudy, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    T-storms

  • Sunday Night

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

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. West northwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 58. North northwest wind around 5 mph becoming east northeast in the evening. Winds could gust as high as 10 mph.
Friday
A 40 percent chance of showers, mainly after 8am. Mostly cloudy, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 79. East wind 5 to 10 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 73.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frankfort IL
 41.49°N 87.85°W
Last Update:
8:21 am CDT Jun 25, 2026
Forecast Valid:
12pm CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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