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Winter is right around the corner, and it could be snowy. Read AccuWeather's 2025-26 U.S. winter forecast. Chevron right

Summit, IL

65°F
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Summit

Illinois

65°
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Summit, IL Weather
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4 AM

64°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSSW 6 mph

Air QualityPoor

Wind Gusts12 mph

Humidity77%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

64°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSSW 6 mph

Air QualityPoor

Wind Gusts12 mph

Humidity76%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSSW 6 mph

Air QualityPoor

Wind Gusts12 mph

Humidity79%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™62°

WindSSW 6 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts12 mph

Humidity82%

Indoor Humidity69% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover8%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

66°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™65°

WindSW 6 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts8 mph

Humidity75%

Indoor Humidity70% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™69°

WindSW 6 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts8 mph

Humidity66%

Indoor Humidity66% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

77°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™75°

WindSW 7 mph

Air QualityPoor

Max UV Index2.3 (Low)

Wind Gusts8 mph

Humidity57%

Indoor Humidity57% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

82°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™79°

WindSW 7 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts9 mph

Humidity49%

Indoor Humidity49% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

85°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™82°

WindSW 7 mph

Air QualityFair

Max UV Index3.9 (Moderate)

Wind Gusts10 mph

Humidity43%

Indoor Humidity43% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

87°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™84°

WindSW 7 mph

Air QualityFair

Max UV Index4.2 (Moderate)

Wind Gusts12 mph

Humidity39%

Indoor Humidity39% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

88°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™85°

WindSW 7 mph

Air QualityPoor

Max UV Index3.9 (Moderate)

Wind Gusts13 mph

Humidity37%

Indoor Humidity37% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

90°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™87°

WindSW 7 mph

Air QualityPoor

Max UV Index3.2 (Moderate)

Wind Gusts13 mph

Humidity34%

Indoor Humidity34% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

88°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™85°

WindSW 7 mph

Air QualityPoor

Max UV Index2.3 (Low)

Wind Gusts13 mph

Humidity35%

Indoor Humidity35% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

87°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™84°

WindSSW 7 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts10 mph

Humidity36%

Indoor Humidity36% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

85°
RealFeel® 83°
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 0%
Chevron down
Mostly sunny

RealFeel Shade™83°

WindS 6 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts9 mph

Humidity39%

Indoor Humidity39% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

82°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity44%

Indoor Humidity44% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

79°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSE 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity50%

Indoor Humidity50% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

76°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindSSE 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity57%

Indoor Humidity57% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

75°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSSE 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

75°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 6 mph

Air QualityPoor

Wind Gusts8 mph

Humidity63%

Indoor Humidity63% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

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World North America United States Illinois Summit

Weather Near Summit:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
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