• Today

    May 27

    80°Lo 66°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
  • Sat

    May 28

    78°Lo 65°

    A p.m. t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
    more
  • Sun

    May 29

    80°Lo 59°

    An a.m. shower; partly sunny

    Moderate ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      5 - High
    more
  • Mon

    May 30

    82°Lo 59°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      5 - High
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      5 - High
    more
  • Tue

    May 31

    80°Lo 60°

    A p.m. t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
11pm
Sat
12am
1am 2am 3am 4am 5am 6am
  11pm 12am 1am 2am 3am 4am 5am 6am
Forecast
Cloudy
Cloudy
Cloudy
T-storms
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 68° 68° 68° 68° 68° 68° 67° 66°
RealFeel® 66° 65° 65° 61° 65° 65° 64° 63°
Humidity 79% 80% 81% 82% 82% 82% 80% 80%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
Rain
 
29%
 
29%
 
35%
 
51%
 
47%
 
40%
 
34%
 
34%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
Wind (mph) 10 SSE 10 S 12 S 12 S 12 S 13 SSW 13 S 13 S
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 94% 94% 94% 94% 94% 94% 94% 93%
Dew Point 62° 62° 62° 62° 62° 62° 61° 60°
Middle Grid line 70 F Middle Grid line 65 F

Temperature History - May 27

more Historical Weather Data >
  Today Normal Record 5/27/2015
High 80° 74° N/A 74°
Low 66° 52° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:22 AM with 14:58 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:08 AM with 10:30 of moolight, then sets at 10:38 AM

Crystal Lake Weather Report

Chicago: Heat, humidity to unfold for Memorial Day

May 27, 2016; 12:05 PM ET

The unofficial start of summer will feel like the upcoming season on Monday in the Chicago area. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps