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Grafton, IL Weather

Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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12 PM

78°

RealFeel® 86°

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.

55%

Thunderstorms

RealFeel Shade™82°

Heat Index80°

WindWNW 2 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts4 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.05 in

Visibility10 mi

Cloud Ceiling2400 ft

1 PM

79°

RealFeel® 87°

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.

54%

Thunderstorms

RealFeel Shade™82°

Heat Index80°

WindNW 5 mph

Air QualityFair

Max UV Index2.6 (Moderate)

Wind Gusts7 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Rain0.05 in

Visibility10 mi

Cloud Ceiling3700 ft

2 PM

80°

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.

43%

Intermittent clouds

RealFeel Shade™85°

Heat Index84°

WindENE 5 mph

Air QualityFair

Max UV Index4.6 (Moderate)

Wind Gusts8 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling3700 ft

3 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.

51%

Mostly cloudy w/ t-storms

RealFeel Shade™84°

Heat Index84°

WindSSE 6 mph

Air QualityFair

Max UV Index2.8 (Moderate)

Wind Gusts9 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.05 in

Visibility5 mi

Cloud Ceiling3700 ft

4 PM

81°

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.

47%

Intermittent clouds

RealFeel Shade™87°

Heat Index86°

WindSSE 6 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts10 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling3700 ft

5 PM

81°

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.

34%

Intermittent clouds

RealFeel Shade™87°

Heat Index86°

WindS 6 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts10 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling12400 ft

6 PM

81°

RealFeel® 90°

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.

34%

Intermittent clouds

RealFeel Shade™87°

Heat Index86°

WindSSW 5 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts10 mph

Humidity77%

Indoor Humidity77% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling21200 ft

7 PM

83°

RealFeel® 92°

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.

34%

Intermittent clouds

RealFeel Shade™89°

Heat Index90°

WindSW 5 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts9 mph

Humidity72%

Indoor Humidity72% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

8 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.

34%

Partly sunny

RealFeel Shade™89°

Heat Index87°

WindSSW 5 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts8 mph

Humidity77%

Indoor Humidity77% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

79°

RealFeel® 86°

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.

34%

Partly cloudy

Heat Index83°

WindSE 5 mph

Air QualityFair

Wind Gusts7 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

10 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.

37%

Partly cloudy

WindESE 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity88%

Indoor Humidity88% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

75°

RealFeel® 82°

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.

43%

Partly cloudy

WindESE 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity95%

Indoor Humidity95% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Grafton

AccuWeather's hourly forecast for Grafton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 78° with a RealFeel® of 86°, thunderstorms with a 55% 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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