Current Conditions

Frankfort, Illinois

59°F15°C
Cloudy

Wind

NE 9 mph14 km/h

Humidity

79%

Cloud Cover

84%

As of Tuesday, September 22, 2026 at 11:17 PM CDT

Today's Outlook

Night

Overcast, with a low around 57°F14°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
CloudyHigh 64°F18°CLow 56°F14°CPrecip 0 in0.1 mm3%Cloud 81%Wind NE 9 mph15 km/hWednesday: Overcast and mild, with a high of 64°F18°C and morning low of 56°F14°C. Breezy from the NE at 10 to 11 mph17 to 18 km/h. Wednesday Night: Overcast, with a low around 57°F14°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h.
Partly CloudyHigh 69°F20°CLow 56°F14°CPrecip 0 in0 mmCloud 62%Wind ENE 6 mph10 km/hThursday: Mostly cloudy and warm, with a high of 69°F20°C and morning low of 56°F14°C. Breezy from the ENE at 7 mph10 km/h. Thursday Night: Mostly cloudy, with a low around 57°F14°C. Light wind from the ENE around 6 mph9 km/h.
Partly CloudyHigh 69°F20°CLow 55°F13°CPrecip 0 in0 mmCloud 77%Wind ENE 5 mph9 km/hFriday: Mostly cloudy and warm, with a high of 69°F20°C and morning low of 55°F13°C. Breezy from the ENE at 5 to 7 mph9 to 11 km/h. Friday Night: Mostly cloudy, with a low around 57°F14°C. Light wind from the ENE around 5 mph9 km/h.
CloudyHigh 69°F21°CLow 52°F11°CPrecip 0 in0.1 mm6%Cloud 82%Wind E 5 mph8 km/hSaturday: Overcast and warm, with a high of 69°F21°C and morning low of 52°F11°C. Light wind from the E around 5 mph8 km/h. Dry air. Saturday Night: Overcast, with a low around 55°F13°C. Light wind from the ENE around 5 mph8 km/h.
DrizzleHigh 71°F21°CLow 54°F12°CPrecip 0.02 in0.5 mm13%Cloud 65%Wind ENE 4 mph7 km/hSunday: Mostly cloudy and warm, with a high of 71°F21°C and morning low of 54°F12°C. Light wind from the NE around 4 mph7 km/h. 13% chance of drizzle in the morning. Sunday Night: Mostly cloudy, with a low around 55°F13°C. Light wind from the ENE around 4 mph7 km/h. 12% chance of drizzle before dawn.
ClearHigh 74°F23°CLow 52°F11°CPrecip 0 in0 mmCloud 24%Wind NE 4 mph7 km/hMonday: Mostly clear and warm, with a high of 74°F23°C and morning low of 52°F11°C. Light wind from the NNE around 4 mph6 km/h. Monday Night: Partly cloudy, with a low around 54°F12°C. Light wind from the NE around 5 mph8 km/h.
ShowersHigh 75°F24°CLow 52°F11°CPrecip 0.08 in2 mm27%Cloud 69%Wind SSE 6 mph10 km/hTuesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 52°F11°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 13% chance of drizzle in the afternoon. Tuesday Night: Mostly cloudy, with a low around 53°F12°C. Breezy from the SE at 6 to 8 mph10 to 13 km/h. 27% chance of showers in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2364°F18°C56°F14°C0 in0.1 mm· 3%81%CloudyNE 9 mph15 km/h
ThursdaySep 2469°F20°C56°F14°C0 in0 mm· —62%Partly CloudyENE 6 mph10 km/h
FridaySep 2569°F20°C55°F13°C0 in0 mm· —77%Partly CloudyENE 5 mph9 km/h
SaturdaySep 2669°F21°C52°F11°C0 in0.1 mm· 6%82%CloudyE 5 mph8 km/h
SundaySep 2771°F21°C54°F12°C0.02 in0.5 mm· 13%65%DrizzleENE 4 mph7 km/h
MondaySep 2874°F23°C52°F11°C0 in0 mm· —24%ClearNE 4 mph7 km/h
TuesdaySep 2975°F24°C52°F11°C0.08 in2 mm· 27%69%ShowersSSE 6 mph10 km/h
WednesdaySep 3071°F22°C60°F16°C0.29 in7.4 mm· 36%84%Light RainS 8 mph14 km/h
ThursdayOct 170°F21°C58°F14°C0.22 in5.6 mm· 29%63%ShowersWSW 9 mph14 km/h
FridayOct 271°F22°C56°F13°C0.11 in2.7 mm· 20%55%ShowersSW 8 mph13 km/h
SaturdayOct 372°F22°C56°F13°C0.08 in2 mm· 16%62%DrizzleSSW 8 mph13 km/h
SundayOct 467°F19°C56°F13°C0.15 in3.7 mm· 26%57%ShowersWSW 10 mph15 km/h
MondayOct 565°F18°C50°F10°C0.06 in1.6 mm· 15%51%DrizzleW 9 mph14 km/h
TuesdayOct 664°F18°C50°F10°C
Feels 47°F8°C
0.08 in2 mm· 15%48%DrizzleW 8 mph13 km/h
WednesdayOct 765°F18°C48°F9°C
Feels 44°F7°C
0.05 in1.2 mm· 12%38%DrizzleWNW 8 mph13 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 41.4959°N, 87.8487°W·Elevation: 232m·Timezone: America/Chicago·Population: 18,653