Crystal Lake, IL

Variable cloudiness with widely separated thunderstorms

RealFeel®77°

RealFeel Shade™74°

Max UV Index2.0 (Low)

WindSSW 9 mph

Mon 9/22

76° /61°

88%

Mostly cloudy and humid with a couple of showers and a thunderstorm

RealFeel®78°

RealFeel Shade™75°

Max UV Index2.0 (Low)

WindSW 9 mph

Tue 9/23

74° /58°

88%

Cloudy with a couple of thunderstorms, especially late in the day

RealFeel®75°

RealFeel Shade™72°

Max UV Index1.0 (Low)

WindWNW 7 mph

Wed 9/24

71° /57°

A thunderstorm around in the morning; otherwise, cloudy

RealFeel®70°

RealFeel Shade™70°

Max UV Index1.0 (Low)

WindSSE 8 mph

Thu 9/25

70° /55°

18%

Low clouds

RealFeel®68°

RealFeel Shade™68°

Max UV Index1.0 (Low)

WindENE 13 mph

Fri 9/26

72° /57°

A morning shower in places; otherwise, low clouds

RealFeel®70°

RealFeel Shade™70°

Max UV Index1.0 (Low)

WindNE 8 mph

Sat 9/27

74° /56°

49%

Sunshine

RealFeel®77°

RealFeel Shade™74°

Max UV Index4.0 (Moderate)

WindSSE 6 mph

Sun 9/28

76° /57°

56%

Mainly cloudy and warm; a little morning rain followed by a passing shower in the afternoon

RealFeel®79°

RealFeel Shade™75°

Max UV Index3.0 (Moderate)

WindNE 5 mph

Mon 9/29

77° /59°

Partly sunny and warm

RealFeel®80°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindNW 6 mph

Tue 9/30

78° /58°

Partly sunny and remaining warm

RealFeel®80°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindNNW 6 mph

Wed 10/1

69° /48°

A passing shower in the morning; otherwise, partly sunny and not as warm

RealFeel®74°

RealFeel Shade™69°

Max UV Index4.0 (Moderate)

WindSSE 6 mph

Thu 10/2

75° /56°

Cloudy

RealFeel®72°

RealFeel Shade™72°

Max UV Index1.0 (Low)

WindSW 13 mph

Fri 10/3

75° /55°

Partly sunny and warm

RealFeel®77°

RealFeel Shade™73°

Max UV Index4.0 (Moderate)

WindWSW 5 mph

Sat 10/4

74° /54°

Mostly sunny

RealFeel®76°

RealFeel Shade™72°

Max UV Index4.0 (Moderate)

WindNE 4 mph

Sun 10/5

73° /54°

58%

Cloudy; a morning shower in spots followed by a little rain in the afternoon

RealFeel®70°

RealFeel Shade™69°

Max UV Index1.0 (Low)

WindESE 7 mph

Mon 10/6

73° /53°

Cloudy

RealFeel®70°

RealFeel Shade™70°

Max UV Index1.0 (Low)

WindSSE 10 mph

Tue 10/7

72° /53°

10%

Mostly sunny

RealFeel®72°

RealFeel Shade™69°

Max UV Index4.0 (Moderate)

WindWSW 9 mph

Wed 10/8

71° /51°

67%

Mainly cloudy with periods of rain ending, then a leftover shower

RealFeel®71°

RealFeel Shade™69°

Max UV Index1.0 (Low)

WindNNW 6 mph

Thu 10/9

67° /50°

Intervals of clouds and sunshine

RealFeel®65°

RealFeel Shade™65°

Max UV Index2.0 (Low)

WindNE 9 mph

Fri 10/10

60° /48°

Plenty of sunshine

RealFeel®67°

RealFeel Shade™60°

Max UV Index4.0 (Moderate)

WindENE 4 mph

Sat 10/11

63° /51°

Cloudy

RealFeel®64°

RealFeel Shade™64°

Max UV Index1.0 (Low)

WindNNE 4 mph

Sun 10/12

68° /50°

Times of clouds and sun

RealFeel®70°

RealFeel Shade™66°

Max UV Index4.0 (Moderate)

WindNW 6 mph

Mon 10/13

66° /50°

77%

Cloudy; rain in the morning followed by a thundershower in the afternoon

RealFeel®64°

RealFeel Shade™64°

Max UV Index1.0 (Low)

WindNE 8 mph

Tue 10/14

60° /47°

65%

Cloudy with showers and thunderstorms

RealFeel®58°

RealFeel Shade™58°

Max UV Index1.0 (Low)

WindWNW 8 mph

Wed 10/15

57° /43°

Sunny

RealFeel®57°

RealFeel Shade™53°

Max UV Index4.0 (Moderate)

WindW 9 mph

Thu 10/16

56° /41°

Partly sunny

RealFeel®55°

RealFeel Shade™52°

Max UV Index4.0 (Moderate)

WindNW 9 mph

Fri 10/17

55° /40°

Mostly sunny

RealFeel®60°

RealFeel Shade™54°

Max UV Index3.0 (Moderate)

WindNW 4 mph

Sat 10/18

56° /41°

Mostly sunny

RealFeel®57°

RealFeel Shade™52°

Max UV Index3.0 (Moderate)

WindSW 7 mph

Sun 10/19

59° /46°

Plenty of sun

RealFeel®58°

RealFeel Shade™55°

Max UV Index3.0 (Moderate)

WindSSW 10 mph

Mon 10/20

63° /46°

Partly sunny

RealFeel®63°

RealFeel Shade™62°

Max UV Index2.0 (Low)

WindS 8 mph

Tue 10/21

65° /47°

10%

Mostly sunny

RealFeel®66°

RealFeel Shade™63°

Max UV Index3.0 (Moderate)

WindSSE 7 mph

Wed 10/22

63° /47°

75%

Cloudy; a passing morning shower, then afternoon rain

RealFeel®56°

RealFeel Shade™56°

Max UV Index1.0 (Low)

WindSSE 14 mph

Thu 10/23

62° /43°

Cloudy with a little rain

RealFeel®57°

RealFeel Shade™57°

Max UV Index1.0 (Low)

WindW 14 mph

Fri 10/24

52° /39°

Sun followed by increasing clouds

RealFeel®53°

RealFeel Shade™53°

Max UV Index2.0 (Low)

WindSSW 5 mph

Sat 10/25

54° /42°

Times of sun and clouds

RealFeel®55°

RealFeel Shade™54°

Max UV Index2.0 (Low)

WindNW 5 mph

Sun 10/26

53° /43°

Rather cloudy

RealFeel®50°

RealFeel Shade™50°

Max UV Index2.0 (Low)

WindN 8 mph

Mon 10/27

51° /44°

Intervals of clouds and sunshine

RealFeel®54°

RealFeel Shade™51°

Max UV Index2.0 (Low)

WindESE 5 mph

Tue 10/28

54° /43°

Intervals of clouds and sunshine

RealFeel®52°

RealFeel Shade™52°

Max UV Index1.0 (Low)

WindESE 8 mph

Wed 10/29

57° /43°

Considerable cloudiness

RealFeel®53°

RealFeel Shade™53°

Max UV Index1.0 (Low)

WindE 10 mph

Thu 10/30

51° /44°

60%

Cooler with periods of rain

RealFeel®42°

RealFeel Shade™42°

Max UV Index1.0 (Low)

WindSW 12 mph

Fri 10/31

53° /31°