• Today

    Jul 31

    85°Lo 60°

    Sunny to partly cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
  • Sat

    Aug 1

    85°Lo 65°

    Beautiful with sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Sun

    Aug 2

    83°Lo 67°

    Partly sunny with a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Mon

    Aug 3

    84°Lo 60°

    A morning t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Tue

    Aug 4

    81°Lo 60°

    Delightful with some sun

    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
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Sunny
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 73° 78° 81° 82° 84° 84° 85° 84°
RealFeel® 74° 79° 82° 84° 85° 86° 85° 83°
Humidity 59% 51% 45% 39% 36% 34% 35% 34%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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0%
Snow
 
0%
 
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0%
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 9 WSW 12 WSW 14 W 16 W 18 WNW 17 WNW 17 WNW 17 WNW
UV Index 3 5 6 7 8 7 6 4
Cloud Cover 0% 0% 0% 0% 0% 26% 26% 26%
Dew Point 58° 58° 58° 55° 54° 53° 54° 53°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 85° 81° N/A 80°
Low 60° 60° N/A 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:29 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:15 PM with 10:58 of moolight, then sets at 7:13 AM

Crystal Lake Weather Report

Chicago: Unsettled Weather to Make Early-Week Return

July 31, 2015; 12:46 AM ET

Temperatures will stay in the 80s, with the daytime high slowly working its way into the low 80s by Monday. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps