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Fall is right around the corner. Read AccuWeather's U.S. fall forecast Chevron right
Days of storms, flood risk expected from Plains to mid-Atlantic. Click for details. Chevron right

Charleston, IL

90°F
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Charleston

Illinois

90°
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Charleston, IL Weather
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Hourly

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5 PM

89°
RealFeel® 99°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 40%
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Partly sunny
alerts

Heat Advisory

12:00 PM Tuesday - 8:00 PM Tuesday

RealFeel Shade™96°

Heat Index101°

WindSW 12 mph

Air QualityFair

Max UV Index2.8 (Moderate)

Wind Gusts15 mph

Humidity66%

Indoor Humidity66% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover43%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

86°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 34%
Chevron down
Mostly sunny
alerts

Heat Advisory

12:00 PM Tuesday - 8:00 PM Tuesday

RealFeel Shade™94°

Heat Index98°

WindSW 9 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts13 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover12%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

84°
RealFeel® 95°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 37%
Chevron down
Mostly sunny
alerts

Heat Advisory

12:00 PM Tuesday - 8:00 PM Tuesday

RealFeel Shade™95°

Heat Index94°

WindSW 8 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts10 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

80°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
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rain drop 43%
Chevron down
Intermittent clouds

Heat Index85°

WindSSW 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity87%

Indoor Humidity87% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover51%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

76°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
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rain drop 47%
Chevron down
Mostly cloudy

WindSSW 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity89%

Indoor Humidity89% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover79%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

72°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

WindS 6 mph

Air QualityFair

Wind Gusts12 mph

Humidity94%

Indoor Humidity94% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Rain0.17 in

Visibility4 mi

Cloud Ceiling2000 ft

11 PM

69°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 39%
Chevron down
Intermittent clouds

WindSSW 7 mph

Air QualityFair

Wind Gusts10 mph

Humidity100%

Indoor Humidity95% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover73%

Visibility10 mi

Cloud Ceiling2000 ft

Hourly Weather Forecast for Charleston

AccuWeather's hourly forecast for Charleston provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 89° with a RealFeel® of 99°, partly sunny with a 40% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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World North America United States Illinois Charleston

Weather Near Charleston:

  • Champaign, IL
  • Decatur, IL
  • Springfield, IL
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