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Decatur, IL

87°F
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Decatur

Illinois

87°
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Decatur, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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2 PM

87°
RealFeel® 100°
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 49%
Chevron down
Cloudy
alerts

Severe Thunderstorm Watch

12:30 PM Thursday - 7:00 PM Thursday

RealFeel Shade™95°

Heat Index100°

WindSE 8 mph

Air QualityFair

Max UV Index2.5 (Low)

Wind Gusts9 mph

Humidity73%

Indoor Humidity73% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling10200 ft

3 PM

87°
RealFeel® 97°
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 66%
Chevron down
Thunderstorms
alerts

Severe Thunderstorm Watch

12:30 PM Thursday - 7:00 PM Thursday

RealFeel Shade™94°

Heat Index101°

WindSSE 7 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts9 mph

Humidity75%

Indoor Humidity75% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

4 PM

87°
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 49%
Chevron down
Cloudy
alerts

Severe Thunderstorm Watch

12:30 PM Thursday - 7:00 PM Thursday

RealFeel Shade™95°

Heat Index99°

WindS 7 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts9 mph

Humidity72%

Indoor Humidity72% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling12800 ft

5 PM

86°
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 56%
Chevron down
Thunderstorms
alerts

Severe Thunderstorm Watch

12:30 PM Thursday - 7:00 PM Thursday

RealFeel Shade™95°

Heat Index100°

WindSE 8 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts9 mph

Humidity79%

Indoor Humidity79% (Dangerously Humid)

Dew Point79° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

6 PM

85°
RealFeel® 96°
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 49%
Chevron down
Cloudy
alerts

Severe Thunderstorm Watch

12:30 PM Thursday - 7:00 PM Thursday

RealFeel Shade™96°

Heat Index97°

WindE 8 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts10 mph

Humidity78%

Indoor Humidity78% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling16600 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 49%
Chevron down
Cloudy

RealFeel Shade™95°

Heat Index95°

WindE 8 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts10 mph

Humidity81%

Indoor Humidity81% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling18500 ft

8 PM

82°
RealFeel® 91°
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 49%
Chevron down
Cloudy

Heat Index89°

WindESE 9 mph

Air QualityFair

Wind Gusts10 mph

Humidity85%

Indoor Humidity85% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling13000 ft

9 PM

79°
RealFeel® 84°
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.
LEARN MORE
rain drop 56%
Chevron down
Thunderstorms

Heat Index83°

WindESE 8 mph

Air QualityFair

Wind Gusts13 mph

Humidity91%

Indoor Humidity91% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

10 PM

77°
RealFeel® 85°
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.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindESE 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity97%

Indoor Humidity95% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling2000 ft

11 PM

77°
RealFeel® 84°
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.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

WindESE 8 mph

Air QualityFair

Wind Gusts13 mph

Humidity95%

Indoor Humidity95% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling4300 ft

Hourly Weather Forecast for Decatur

AccuWeather's hourly forecast for Decatur provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 87° with a RealFeel® of 100°, cloudy with a 49% 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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