Current Conditions

Charleston, Illinois

92°F33°C
Hot

Feels like98°F37°C

Wind

S 5 mph8 km/h

Humidity

49%

Cloud Cover

35%

As of Wednesday, September 2, 2026 at 7:54 PM CDT

Today's Outlook

Night

Mostly clear, with a low around 79°F26°C. Breezy from the SSW at 6 to 8 mph10 to 12 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
HotHigh 98°F37°CLow 77°F25°CPrecip 0 in0 mmCloud 9%Wind SW 7 mph11 km/hThursday: Mostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 79°F26°C. Breezy from the SSW at 6 to 8 mph10 to 12 km/h.
HotHigh 98°F37°CLow 77°F25°CPrecip 0 in0 mmCloud 11%Wind WSW 5 mph8 km/hFriday: Mostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Light wind from the WSW around 5 mph8 km/h. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 79°F26°C. Light wind from the SSW around 5 mph8 km/h.
ShowersHigh 94°F34°CFeels 102°F39°CLow 77°F25°CPrecip 0.06 in1.6 mm58%Cloud 36%Wind NNE 5 mph8 km/hSaturday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 77°F25°C — feels like 102°F39°C. Light wind from the NNE around 5 mph8 km/h. 58% chance of showers throughout the day. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the NE at 5 to 7 mph9 to 12 km/h. 17% chance of drizzle in the evening.
Partly CloudyHigh 87°F30°CLow 71°F22°CPrecip 0.02 in0.6 mm8%Cloud 46%Wind ENE 7 mph11 km/hSunday: Partly cloudy and hot, with a high of 87°F30°C and morning low of 71°F22°C. Breezy from the ENE at 7 to 8 mph12 to 13 km/h. Humid. Sunday Night: Partly cloudy, with a low around 73°F23°C. Breezy from the ENE at 7 mph11 km/h.
ClearHigh 87°F31°CLow 67°F19°CPrecip 0.01 in0.2 mm5%Cloud 39%Wind E 6 mph9 km/hMonday: Partly cloudy and hot, with a high of 87°F31°C and morning low of 67°F19°C. Light wind from the E around 6 mph9 km/h. Monday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
ClearHigh 94°F34°CLow 69°F20°CPrecip 0 in0.1 mm2%Cloud 31%Wind SSE 6 mph10 km/hTuesday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 69°F20°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. Tuesday Night: Partly cloudy, with a low around 70°F21°C. Breezy from the SE at 6 to 8 mph10 to 13 km/h.
HotHigh 95°F35°CFeels 100°F38°CLow 76°F25°CPrecip 0.01 in0.2 mm6%Cloud 24%Wind SSW 9 mph15 km/hWednesday: Mostly clear and hot, with a high of 95°F35°C and morning low of 76°F25°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 77°F25°C. Breezy from the SSW at 8 to 9 mph13 to 15 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 398°F37°C77°F25°C0 in0 mm· —9%HotSW 7 mph11 km/h
FridaySep 498°F37°C77°F25°C0 in0 mm· —11%HotWSW 5 mph8 km/h
SaturdaySep 594°F34°C
Feels 102°F39°C
77°F25°C0.06 in1.6 mm· 58%36%ShowersNNE 5 mph8 km/h
SundaySep 687°F30°C71°F22°C0.02 in0.6 mm· 8%46%Partly CloudyENE 7 mph11 km/h
MondaySep 787°F31°C67°F19°C0.01 in0.2 mm· 5%39%ClearE 6 mph9 km/h
TuesdaySep 894°F34°C69°F20°C0 in0.1 mm· 2%31%ClearSSE 6 mph10 km/h
WednesdaySep 995°F35°C
Feels 100°F38°C
76°F25°C0.01 in0.2 mm· 6%24%HotSSW 9 mph15 km/h
ThursdaySep 1090°F32°C
Feels 93°F34°C
76°F25°C0.08 in2 mm· 18%44%DrizzleSW 9 mph14 km/h
FridaySep 1186°F30°C70°F21°C0.1 in2.5 mm· 13%48%ShowersSW 7 mph12 km/h
SaturdaySep 1285°F29°C68°F20°C0.13 in3.4 mm· 18%48%ShowersS 7 mph12 km/h
SundaySep 1386°F30°C68°F20°C0.09 in2.3 mm· 16%46%DrizzleS 8 mph13 km/h
MondaySep 1485°F29°C69°F20°C0.1 in2.6 mm· 16%50%ShowersSSW 8 mph13 km/h
TuesdaySep 1583°F28°C67°F19°C0.1 in2.6 mm· 17%48%ShowersSSW 7 mph12 km/h
WednesdaySep 1682°F28°C64°F18°C0.07 in1.9 mm· 13%44%DrizzleNNE 7 mph12 km/h
ThursdaySep 1780°F27°C63°F17°C0.06 in1.5 mm· 12%42%DrizzleNE 7 mph12 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: 39.4962°N, 88.1762°W·Elevation: 204m·Timezone: America/Chicago·Population: 21,196