Illinois · NWS LOT office

Frankfort, IL weather

It is 54°F and clear at Lewis University Airport as of Oct 28, 12:30 AM CDT. Overnight: Mostly Cloudy, low near 52°F, 2% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:20 AM CDT.

Updated Oct 28, 1:32 AM CDT (snapshot)

Current conditions

Temperature

54°F

Clear

Wind

SSE 6 mph

Humidity 88% · dew point 50°F

Pressure · visibility

30.21 inHg

Visibility 10 mi

Observed at Lewis University Airport (KLOT), Oct 28, 12:30 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Frankfort forecast zone right now.

Around the NWS LOT forecast area

No active alerts in zones served by the LOT office near Frankfort.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Illinois.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Frankfort (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM57°FMostly Cloudy0%S 5 mph
Wed 2 AM56°FPartly Cloudy0%S 5 mph
Wed 3 AM54°FPartly Cloudy0%S 5 mph
Wed 4 AM54°FPartly Cloudy0%S 5 mph
Wed 5 AM53°FPartly Cloudy0% 0 mph
Wed 6 AM52°FSunny0% 0 mph
Wed 7 AM52°FSunny0% 0 mph
Wed 8 AM53°FSunny0%S 5 mph
Wed 9 AM58°FSunny0%S 5 mph
Wed 10 AM62°FSunny0%S 5 mph
Wed 11 AM66°FSunny0%SSW 10 mph
Wed 12 PM70°FSunny0%SSW 10 mph
Wed 1 PM72°FSunny0%SSW 10 mph
Wed 2 PM73°FSunny0%SSW 15 mph
Wed 3 PM74°FSunny0%SSW 15 mph
Wed 4 PM74°FSunny0%SSW 15 mph
Wed 5 PM73°FSunny0%S 10 mph
Wed 6 PM69°FMostly Clear0%S 10 mph
Wed 7 PM66°FMostly Clear0%S 10 mph
Wed 8 PM64°FMostly Clear0%S 10 mph
Wed 9 PM63°FMostly Clear0%S 10 mph
Wed 10 PM62°FMostly Clear0%S 10 mph
Wed 11 PM62°FMostly Clear0%S 10 mph
Thu 12 AM62°FMostly Clear0%S 10 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Frankfort can differ.

7-day forecast

Overnight

Low 52°F

Mostly cloudy, with a low around 52. South wind 0 to 5 mph.

Wednesday

High 74°F·Low 58°F

Sunny. High near 74, with temperatures falling to around 71 in the afternoon. South southwest wind 0 to 10 mph, with gusts as high as 20 mph.

Wednesday Night: Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.

Thursday

High 71°F·Low 45°F

A slight chance of rain showers between 7am and 2pm. Partly sunny, with a high near 71. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday Night: Mostly clear, with a low around 45. North wind around 5 mph, with gusts as high as 10 mph.

Friday

High 66°F·Low 51°F

Partly sunny, with a high near 66.

Friday Night: A chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Cloudy, with a low around 51.

Saturday

High 64°F·Low 51°F

A chance of showers and thunderstorms. Mostly cloudy, with a high near 64.

Saturday Night: A chance of rain showers. Mostly cloudy, with a low around 51.

Sunday

High 68°F·Low 52°F

A chance of rain showers. Mostly cloudy, with a high near 68.

Sunday Night: A slight chance of rain showers. Mostly cloudy, with a low around 52.

Monday

High 67°F·Low 54°F

A chance of rain showers. Mostly cloudy, with a high near 67.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 54.

Tuesday

High 68°F

Rain showers likely. Mostly cloudy, with a high near 68.

Nearby cities

Larger cities in the area

Other cities in Will County

See every city we cover in Illinois, or check all active alerts.

About this forecast

Forecast office
Frankfort is served by the National Weather Service LOT forecast office, forecast zone ILZ106, county zone ILC197.
Location used
The Census Bureau's internal point for Frankfort (41.5070, -87.8710), in Will County. Population: 21,160 (2024 estimate), number 115 of the 121 Illinois cities on this site.
Radar
Nearest NWS radar: KLOT. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/41.507,-87.871 (forecast issued Oct 28, 1:20 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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