• Today

    Apr 19

    65°Lo 42°

    Mostly sunny

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sun

    Apr 20

    73°Lo 52°

    Partly sunny

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Mon

    Apr 21

    69°Lo 45°

    A couple of thunderstorms

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Tue

    Apr 22

    56°Lo 34°

    Cooler; a morning shower

    Low indoor dust & dander levels
    • Precip
      40%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      60%
    more
  • Wed

    Apr 23

    58°Lo 40°

    Partly sunny

    Moderate indoor dust & dander levels
    • Precip
      10%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      33%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 68° 69° 71° 72° 73° 72° 72° 71°
RealFeel® 70° 71° 73° 74° 74° 72° 70° 67°
Humidity 49% 46% 45% 44% 43% 43% 44% 46%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
3%
 
3%
 
3%
 
2%
 
2%
 
2%
 
2%
 
2%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 9 S 10 SSW 10 SSW 10 SSW 11 SSW 11 SSW 10 S 9 S
UV Index 5 6 6 6 5 4 2 1
Cloud Cover 26% 26% 26% 26% 26% 26% 37% 45%
Dew Point 48° 48° 48° 48° 49° 49° 49° 50°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2013
High 73° 58° N/A 43°
Low 52° 36° N/A 23°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 13:35 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:22 AM with 10:00 of moolight, then sets at 10:22 AM

Top Story

Crystal Lake Weather Report

Chicago: Weekend Warmth on the Way

April 19, 2014; 3:14 AM ET

Seasonal warmth looks to make a return to Chicago right in time for the holiday weekend. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps