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Lake Forest, IL

64°F
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Lake Forest, IL Weather
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Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities

June 19 - August 2

Thu 6/19

84° /66°
55%
A shower in the area early this morning; partly sunny and warmer

RealFeel®88°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindW 8 mph

Fri 6/20

86° /72°
16%
Breezy in the morning; otherwise, partly sunny and warm

RealFeel®86°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindSW 13 mph

Sat 6/21

94° /76°
4%
Windy and hot with plenty of sunshine; start of an extended heat wave; stay hydrated

RealFeel®97°

RealFeel Shade™94°

Max UV Index10 (Very High)

WindSSW 18 mph

Sun 6/22

95° /77°
8%
Mostly cloudy, breezy and hot; stay hydrated when outside in the heat

RealFeel®98°

RealFeel Shade™95°

Max UV Index8 (Very High)

WindSW 16 mph

Mon 6/23

95° /71°
0%
Breezy in the morning; otherwise, sunny and hot; stay hydrated when outside in the heat

RealFeel®97°

RealFeel Shade™92°

Max UV Index10 (Very High)

WindSW 13 mph

Tue 6/24

85° /65°
2%
Warm and humid with clouds and sun

RealFeel®96°

RealFeel Shade™88°

Max UV Index10 (Very High)

WindWNW 7 mph

Wed 6/25

83° /67°
71%
Variable clouds with a couple of thunderstorms, especially late in the day

RealFeel®87°

RealFeel Shade™83°

Max UV Index7 (High)

WindNE 8 mph

Thu 6/26

81° /65°
13%
Humid with periods of clouds and sunshine

RealFeel®90°

RealFeel Shade™87°

Max UV Index8 (Very High)

WindNE 8 mph

Fri 6/27

79° /64°
1%
Humid with plenty of sun

RealFeel®90°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindSW 10 mph

Sat 6/28

78° /66°
67%
A thick cloud cover and humid; a couple of thunderstorms in the afternoon

RealFeel®88°

RealFeel Shade™83°

Max UV Index5 (Moderate)

WindNE 5 mph

Sun 6/29

80° /67°
61%
Humid with occasional rain

RealFeel®87°

RealFeel Shade™84°

Max UV Index2 (Low)

WindNW 6 mph

Mon 6/30

82° /69°
40%
A shower in spots in the morning; otherwise, humid with low clouds

RealFeel®83°

RealFeel Shade™80°

Max UV Index3 (Moderate)

WindNNE 9 mph

Tue 7/1

84° /70°
2%
Decreasing clouds and less humid

RealFeel®90°

RealFeel Shade™81°

Max UV Index10 (Very High)

WindENE 7 mph

Wed 7/2

82° /62°
64%
Mostly cloudy with a couple of showers and a thunderstorm in the afternoon

RealFeel®86°

RealFeel Shade™82°

Max UV Index4 (Moderate)

WindW 5 mph

Thu 7/3

80° /65°
25%
Cloudy and humid

RealFeel®83°

RealFeel Shade™82°

Max UV Index3 (Moderate)

WindNNE 6 mph

Fri 7/4

77° /64°
10%
Mostly sunny and less humid

RealFeel®85°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindENE 5 mph

Sat 7/5

79° /65°
10%
Humid with abundant sunshine

RealFeel®87°

RealFeel Shade™82°

Max UV Index10 (Very High)

WindSW 4 mph

Sun 7/6

83° /66°
65%
Humid with intervals of clouds and sunshine; a couple of showers and a thunderstorm in the afternoon

RealFeel®90°

RealFeel Shade™89°

Max UV Index5 (Moderate)

WindSW 5 mph

Mon 7/7

81° /66°
65%
Humid with considerable cloudiness; a couple of afternoon showers and a thunderstorm

RealFeel®87°

RealFeel Shade™87°

Max UV Index3 (Moderate)

WindW 4 mph

Tue 7/8

81° /65°
56%
A morning thunderstorm; otherwise, humid with decreasing clouds

RealFeel®85°

RealFeel Shade™79°

Max UV Index10 (Very High)

WindWNW 13 mph

Wed 7/9

77° /62°
25%
Less humid with times of clouds and sun

RealFeel®80°

RealFeel Shade™74°

Max UV Index10 (Very High)

WindWNW 12 mph

Thu 7/10

77° /62°
10%
Sunshine

RealFeel®82°

RealFeel Shade™75°

Max UV Index10 (Very High)

WindWSW 7 mph

Fri 7/11

78° /63°
55%
A passing shower in the morning; otherwise, mostly sunny

RealFeel®86°

RealFeel Shade™77°

Max UV Index10 (Very High)

WindSSW 4 mph

Sat 7/12

78° /65°
68%
Mostly cloudy and humid with showers and thunderstorms

RealFeel®81°

RealFeel Shade™79°

Max UV Index2 (Low)

WindSSW 10 mph

Sun 7/13

78° /60°
10%
Mostly sunny and less humid

RealFeel®84°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindWNW 8 mph

Mon 7/14

77° /60°
25%
Increasing clouds

RealFeel®84°

RealFeel Shade™75°

Max UV Index10 (Very High)

WindSE 5 mph

Tue 7/15

77° /65°
70%
Cloudy with afternoon showers and thunderstorms

RealFeel®78°

RealFeel Shade™78°

Max UV Index2 (Low)

WindSSE 14 mph

Wed 7/16

78° /67°
25%
Mostly cloudy and humid

RealFeel®83°

RealFeel Shade™81°

Max UV Index3 (Moderate)

WindW 7 mph

Thu 7/17

80° /66°
10%
Mostly sunny and humid

RealFeel®89°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindWSW 5 mph

Fri 7/18

83° /68°
65%
Sun yielding to clouds and uncomfortably humid; a couple of afternoon showers and a thunderstorm

RealFeel®87°

RealFeel Shade™87°

Max UV Index5 (Moderate)

WindSSW 12 mph

Sat 7/19

82° /67°
65%
Mostly cloudy and uncomfortably humid; a couple of afternoon showers and a thunderstorm

RealFeel®88°

RealFeel Shade™88°

Max UV Index3 (Moderate)

WindSW 12 mph

Sun 7/20

83° /67°
10%
Mostly sunny and humid

RealFeel®89°

RealFeel Shade™83°

Max UV Index10 (Very High)

WindN 8 mph

Mon 7/21

78° /65°
5%
Plenty of sunshine

RealFeel®87°

RealFeel Shade™79°

Max UV Index10 (Very High)

WindNE 5 mph

Tue 7/22

79° /68°
40%
Humid with times of clouds and sun; a thunderstorm in spots in the afternoon

RealFeel®88°

RealFeel Shade™86°

Max UV Index10 (Very High)

WindSE 6 mph

Wed 7/23

83° /68°
70%
Mostly cloudy and uncomfortably humid; occasional rain in the afternoon

RealFeel®91°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindS 9 mph

Thu 7/24

85° /65°
56%
A couple of morning showers; otherwise, cloudy and humid

RealFeel®86°

RealFeel Shade™86°

Max UV Index3 (Moderate)

WindN 10 mph

Fri 7/25

78° /64°
62%
Cloudy with a couple of showers and a thunderstorm, mainly later

RealFeel®79°

RealFeel Shade™79°

Max UV Index2 (Low)

WindNE 8 mph

Sat 7/26

78° /67°
25%
Mostly cloudy and humid

RealFeel®84°

RealFeel Shade™83°

Max UV Index7 (High)

WindN 2 mph

Sun 7/27

82° /68°
20%
Humid with sun and some clouds

RealFeel®92°

RealFeel Shade™86°

Max UV Index9 (Very High)

WindSSW 5 mph

Mon 7/28

84° /68°
25%
Humid with intervals of clouds and sunshine

RealFeel®91°

RealFeel Shade™89°

Max UV Index4 (Moderate)

WindS 8 mph

Tue 7/29

85° /67°
20%
Mostly sunny and uncomfortably humid

RealFeel®94°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindSW 8 mph

Wed 7/30

85° /69°
40%
Partly sunny and uncomfortably humid; a thunderstorm in spots in the afternoon

RealFeel®95°

RealFeel Shade™92°

Max UV Index9 (Very High)

WindSW 8 mph

Thu 7/31

84° /69°
20%
Partly sunny and uncomfortably humid

RealFeel®92°

RealFeel Shade™90°

Max UV Index9 (Very High)

WindSSW 10 mph

Fri 8/1

79° /60°
0%
Mostly sunny

RealFeel®83°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindNNE 7 mph

Sat 8/2

78° /65°
25%
Partly sunny

RealFeel®83°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindSSE 5 mph

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World North America United States Illinois Lake Forest

Weather Near Lake Forest:

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