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Storms to hammer Central, Eastern US with flood, wind threat Chevron right
Dangerous heat and humidity to grip the Southeast Chevron right

Grafton, IL

89°F
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Grafton

Illinois

89°
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Grafton, IL Weather
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Today

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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 44%
Chevron down
Mostly cloudy w/ t-storms
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

RealFeel Shade™95°

WindSW 7 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts9 mph

Humidity76%

Indoor Humidity76% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover69%

Visibility5 mi

Cloud Ceiling13000 ft

7 PM

87°
RealFeel® 94°
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 51%
Chevron down
Thunderstorms
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

RealFeel Shade™94°

WindSSW 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts10 mph

Humidity71%

Indoor Humidity71% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Rain0.01 in

Visibility10 mi

Cloud Ceiling9000 ft

8 PM

84°
RealFeel® 94°
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 47%
Chevron down
Mostly sunny
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

RealFeel Shade™94°

WindS 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts12 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover19%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

82°
RealFeel® 93°
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 47%
Chevron down
Mostly clear
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

WindSE 5 mph

Air QualityFair

Wind Gusts9 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

81°
RealFeel® 89°
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 51%
Chevron down
Partly cloudy w/ t-storms
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

WindESE 5 mph

Air QualityFair

Wind Gusts10 mph

Humidity87%

Indoor Humidity87% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Rain0.05 in

Visibility5 mi

Cloud Ceiling30000 ft

11 PM

80°
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 40%
Chevron down
Mostly clear
alerts

Heat Advisory

12:00 PM Wednesday - 7:00 PM Tuesday

WindSE 5 mph

Air QualityFair

Wind Gusts10 mph

Humidity90%

Indoor Humidity90% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Illinois Grafton

Weather Near Grafton:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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