Current Conditions

Charleston, Illinois

85°F29°C
Drizzle

Feels like93°F34°C

Wind

SW 3 mph5 km/h

Humidity

72%

Cloud Cover

99%

As of Thursday, August 13, 2026 at 1:09 PM CDT

Today's Outlook

Day

Overcast and hot, with a high of 87°F31°C and morning low of 73°F23°C — feels like 97°F36°C. Light wind from the SE around 5 mph7 km/h. 25% chance of drizzle in the afternoon. Heat risk in the afternoon.

Night

Overcast, with a low around 80°F27°C. Breezy from the E at 6 to 7 mph9 to 11 km/h. 13% chance of drizzle overnight.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 87°F31°CFeels 97°F36°CLow 73°F23°CPrecip 0.04 in0.9 mm25%Cloud 93%Wind ESE 5 mph8 km/hThursday: Overcast and hot, with a high of 87°F31°C and morning low of 73°F23°C — feels like 97°F36°C. Light wind from the SE around 5 mph7 km/h. 25% chance of drizzle in the afternoon. Heat risk in the afternoon. Thursday Night: Overcast, with a low around 80°F27°C. Breezy from the E at 6 to 7 mph9 to 11 km/h. 13% chance of drizzle overnight.
Light RainHigh 89°F32°CFeels 98°F37°CLow 74°F24°CPrecip 0.15 in3.9 mm38%Cloud 88%Wind E 6 mph10 km/hFriday: Overcast and hot, with a high of 89°F32°C and morning low of 74°F24°C — feels like 99°F37°C. Breezy from the ESE at 6 to 7 mph9 to 12 km/h. 38% chance of light rain throughout the day. Heat risk in the afternoon. Friday Night: Overcast, with a low around 76°F24°C. Breezy from the E at 6 to 7 mph10 to 12 km/h. 28% chance of light rain throughout the night.
Light RainHigh 87°F31°CFeels 96°F36°CLow 76°F24°CPrecip 0.2 in5.2 mm39%Cloud 84%Wind SSE 5 mph8 km/hSaturday: Overcast and hot, with a high of 87°F31°C and morning low of 76°F24°C — feels like 97°F36°C. Light wind from the SSW around 5 mph9 km/h. 39% chance of light rain throughout the day. Heat risk in the afternoon. Saturday Night: Mostly cloudy, with a low around 76°F25°C. Breezy from the SE at 5 to 7 mph8 to 11 km/h. 36% chance of light rain overnight.
ShowersHigh 93°F34°CFeels 103°F39°CLow 78°F26°CPrecip 0.09 in2.4 mm32%Cloud 60%Wind W 7 mph10 km/hSunday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 78°F26°C — feels like 102°F39°C. Breezy from the W at 7 to 8 mph11 to 13 km/h. 11% chance of drizzle in the morning. Heat risk in the afternoon. Sunday Night: Mostly cloudy, with a low around 78°F26°C. Light wind from the W around 6 mph9 km/h. 32% chance of showers throughout the night.
ShowersHigh 84°F29°CLow 72°F22°CPrecip 0.14 in3.6 mm39%Cloud 63%Wind NNW 7 mph11 km/hMonday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 72°F22°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 13% chance of drizzle in the morning. Humid. Monday Night: Mostly cloudy, with a low around 73°F23°C. Light wind from the NNW around 6 mph10 km/h. 39% chance of showers overnight.
ClearHigh 86°F30°CLow 67°F19°CPrecip 0 in0 mmCloud 30%Wind ESE 4 mph6 km/hTuesday: Partly cloudy and warm, with a high of 86°F30°C and morning low of 67°F19°C. Light wind from the SE around 3 mph5 km/h. Tuesday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the E around 4 mph7 km/h.
ShowersHigh 89°F32°CFeels 94°F34°CLow 72°F22°CPrecip 0.09 in2.3 mm22%Cloud 65%Wind SSW 8 mph13 km/hWednesday: Mostly cloudy and hot, with a high of 89°F32°C and morning low of 72°F22°C. Breezy from the SW at 8 to 9 mph14 to 15 km/h. 19% chance of drizzle throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the S at 7 mph12 km/h. 22% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1387°F31°C
Feels 97°F36°C
73°F23°C0.04 in0.9 mm· 25%93%DrizzleESE 5 mph8 km/h
FridayAug 1489°F32°C
Feels 98°F37°C
74°F24°C0.15 in3.9 mm· 38%88%Light RainE 6 mph10 km/h
SaturdayAug 1587°F31°C
Feels 96°F36°C
76°F24°C0.2 in5.2 mm· 39%84%Light RainSSE 5 mph8 km/h
SundayAug 1693°F34°C
Feels 103°F39°C
78°F26°C0.09 in2.4 mm· 32%60%ShowersW 7 mph10 km/h
MondayAug 1784°F29°C72°F22°C0.14 in3.6 mm· 39%63%ShowersNNW 7 mph11 km/h
TuesdayAug 1886°F30°C67°F19°C0 in0 mm· —30%ClearESE 4 mph6 km/h
WednesdayAug 1989°F32°C
Feels 94°F34°C
72°F22°C0.09 in2.3 mm· 22%65%ShowersSSW 8 mph13 km/h
ThursdayAug 2082°F28°C69°F21°C0.09 in2.4 mm· 16%47%ShowersN 7 mph11 km/h
FridayAug 2183°F28°C65°F18°C0.1 in2.6 mm· 12%48%ShowersENE 6 mph10 km/h
SaturdayAug 2285°F29°C67°F20°C0.11 in2.9 mm· 18%45%ShowersE 6 mph10 km/h
SundayAug 2386°F30°C67°F20°C0.06 in1.4 mm· 9%38%ClearNE 6 mph10 km/h
MondayAug 2488°F31°C67°F20°C0.02 in0.6 mm· 7%29%ClearESE 6 mph10 km/h
TuesdayAug 2589°F32°C69°F20°C0.02 in0.4 mm· 7%36%ClearSE 6 mph10 km/h
WednesdayAug 2689°F32°C69°F21°C0.03 in0.8 mm· 8%41%Partly CloudyESE 7 mph10 km/h
ThursdayAug 2787°F31°C69°F21°C0.08 in2.1 mm· 13%49%ShowersNE 6 mph10 km/h

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About This Forecast

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Coordinates: 39.4962°N, 88.1762°W·Elevation: 204m·Timezone: America/Chicago·Population: 21,196