Current Conditions

Charleston, Illinois

72°F22°C
Light Rain

Wind

ESE 4 mph7 km/h

Humidity

96%

Cloud Cover

73%

As of Thursday, August 13, 2026 at 5:22 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 85°F30°C and morning low of 73°F23°C — feels like 95°F35°C. Light wind from the SE around 5 mph8 km/h. 51% chance of light rain throughout the day. Heavy, humid air.

Night

Overcast, with a low around 72°F22°C. Light wind from the ESE around 5 mph8 km/h. 17% chance of drizzle throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Light RainHigh 85°F30°CFeels 94°F35°CLow 72°F22°CPrecip 0.09 in2.4 mm51%Cloud 91%Wind ESE 5 mph8 km/hThursday: Overcast and warm, with a high of 85°F30°C and morning low of 73°F23°C — feels like 95°F35°C. Light wind from the SE around 5 mph8 km/h. 51% chance of light rain throughout the day. Heavy, humid air. Thursday Night: Overcast, with a low around 72°F22°C. Light wind from the ESE around 5 mph8 km/h. 17% chance of drizzle throughout the night.
Light RainHigh 88°F31°CFeels 98°F36°CLow 74°F23°CPrecip 0.12 in3 mm27%Cloud 91%Wind E 6 mph10 km/hFriday: Overcast and hot, with a high of 88°F31°C and morning low of 74°F23°C — feels like 97°F36°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h. 26% chance of drizzle in the morning. Heat risk in the afternoon. Friday Night: Overcast, with a low around 75°F24°C. Breezy from the E at 6 to 7 mph10 to 12 km/h. 27% chance of light rain throughout the night.
Light RainHigh 89°F32°CFeels 99°F37°CLow 75°F24°CPrecip 0.19 in4.9 mm43%Cloud 82%Wind SSE 6 mph9 km/hSaturday: Overcast and hot, with a high of 89°F32°C and morning low of 75°F24°C — feels like 99°F37°C. Light wind from the S around 6 mph9 km/h. 35% chance of light rain throughout the day. Heat risk in the afternoon. Saturday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the ESE at 5 to 7 mph9 to 12 km/h. 43% chance of light rain overnight.
ShowersHigh 92°F33°CFeels 103°F39°CLow 79°F26°CPrecip 0.06 in1.6 mm25%Cloud 57%Wind W 7 mph11 km/hSunday: Mostly cloudy and hot, with a high of 92°F33°C and morning low of 79°F26°C — feels like 102°F39°C. Breezy from the W at 8 mph12 km/h. 13% chance of drizzle in the morning. Heat risk in the afternoon. Sunday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the W at 7 mph11 km/h. 25% chance of showers throughout the night.
ShowersHigh 83°F29°CFeels 86°F30°CLow 72°F22°CPrecip 0.09 in2.3 mm33%Cloud 57%Wind NNW 7 mph11 km/hMonday: Mostly cloudy and warm, with a high of 83°F29°C and morning low of 72°F22°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 12% 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 mph9 km/h. 33% chance of showers overnight.
ClearHigh 86°F30°CLow 66°F19°CPrecip 0 in0 mmCloud 29%Wind ESE 4 mph7 km/hTuesday: Partly cloudy and warm, with a high of 86°F30°C and morning low of 66°F19°C. Light wind from the SE around 3 mph6 km/h. Tuesday Night: Partly cloudy, with a low around 67°F19°C. Light wind from the E around 5 mph7 km/h.
ShowersHigh 90°F32°CFeels 96°F35°CLow 72°F22°CPrecip 0.12 in3.1 mm19%Cloud 63%Wind S 8 mph13 km/hWednesday: Mostly cloudy and hot, with a high of 90°F32°C and morning low of 72°F22°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 19% chance of showers throughout the day. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the S at 7 to 8 mph12 to 12 km/h. 17% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1385°F30°C
Feels 94°F35°C
72°F22°C0.09 in2.4 mm· 51%91%Light RainESE 5 mph8 km/h
FridayAug 1488°F31°C
Feels 98°F36°C
74°F23°C0.12 in3 mm· 27%91%Light RainE 6 mph10 km/h
SaturdayAug 1589°F32°C
Feels 99°F37°C
75°F24°C0.19 in4.9 mm· 43%82%Light RainSSE 6 mph9 km/h
SundayAug 1692°F33°C
Feels 103°F39°C
79°F26°C0.06 in1.6 mm· 25%57%ShowersW 7 mph11 km/h
MondayAug 1783°F29°C
Feels 86°F30°C
72°F22°C0.09 in2.3 mm· 33%57%ShowersNNW 7 mph11 km/h
TuesdayAug 1886°F30°C66°F19°C0 in0 mm· —29%ClearESE 4 mph7 km/h
WednesdayAug 1990°F32°C
Feels 96°F35°C
72°F22°C0.12 in3.1 mm· 19%63%ShowersS 8 mph13 km/h
ThursdayAug 2084°F29°C71°F21°C0.06 in1.6 mm· 13%47%ShowersNNW 7 mph11 km/h
FridayAug 2182°F28°C65°F19°C0.07 in1.9 mm· 11%44%DrizzleNNE 6 mph10 km/h
SaturdayAug 2284°F29°C65°F19°C0.06 in1.5 mm· 10%36%DrizzleNE 6 mph9 km/h
SundayAug 2385°F30°C66°F19°C0.04 in1 mm· 9%34%ClearENE 6 mph10 km/h
MondayAug 2486°F30°C66°F19°C0.03 in0.8 mm· 5%29%ClearENE 6 mph9 km/h
TuesdayAug 2588°F31°C67°F19°C0.02 in0.4 mm· 4%31%ClearE 6 mph9 km/h
WednesdayAug 2689°F32°C68°F20°C0.02 in0.4 mm· 6%33%ClearE 6 mph9 km/h
ThursdayAug 2788°F31°C69°F20°C0.04 in1 mm· 8%45%Partly CloudyE 6 mph10 km/h

Nearby Cities

About This Forecast

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