• Today

    Apr 28

    62°Lo 37°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Wed

    Apr 29

    64°Lo 38°

    Clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Thu

    Apr 30

    57°Lo 35°

    Times of clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Fri

    May 1

    65°Lo 45°

    Plenty of sunshine

    Low ragweed pollen levels
    • Precip
      3%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      9%
  • Sat

    May 2

    71°Lo 52°

    Times of clouds and sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      50%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Clear
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 35° 37° 39° 42° 46° 50° 54° 56°
RealFeel® 31° 34° 38° 43° 50° 58° 64° 68°
Humidity 92% 89% 84% 76% 67% 60% 53% 48%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 7 N 6 N 6 N 6 N 5 N 5 N 5 N 5 N
UV Index 0 0 0 1 3 4 6 7
Cloud Cover 0% 0% 0% 6% 10% 10% 10% 10%
Dew Point 33° 34° 35° 35° 35° 37° 38° 37°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F

Temperature History - May 1

more Historical Weather Data >
  Today Normal Record 5/1/2014
High 65° 62° N/A 47°
Low 45° 40° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:49 AM with 14:03 of sunlight, then sets at 7:52 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:38 PM with 11:30 of moolight, then sets at 5:08 AM

Crystal Lake Weather Report

Sunshine to Prevail This Week in Chicago

April 28, 2015; 2:50 AM ET

Sunny skies and cooler conditions will be the rule this week in Chicago. more >

Fri. Dust & Dander

Fri. Wind Maps