• Today

    Sep 21

    64°Lo 41°

    Partly sunny; breezy, cooler

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Mon

    Sep 22

    66°Lo 47°

    Mostly sunny

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

    Sep 23

    73°Lo 51°

    Mostly sunny and pleasant

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

    Sep 24

    73°Lo 49°

    Sunny and pleasant

    Low ragweed pollen levels
    • Precip
      11%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      10%
    more
  • Thu

    Sep 25

    76°Lo 49°

    Mostly sunny and pleasant

    Ragweed Pollen Weather
    • Precip
      13%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      25%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
12pm
1pm 2pm 3pm 4pm 5pm 6pm 7pm
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Showers
Partly Sunny
Partly Sunny
Mostly Clear
Temp (°F) 62° 62° 64° 63° 62° 61° 59° 57°
RealFeel® 56° 58° 59° 58° 58° 57° 55° 53°
Humidity 73% 72% 69% 69% 70% 71% 73% 76%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
28%
 
33%
 
43%
 
47%
 
51%
 
20%
 
16%
 
20%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (mph) 16 NNW 14 NW 14 NW 13 NW 12 NW 10 NW 7 NNW 6 NNW
UV Index 2 2 2 2 2 1 0 0
Cloud Cover 97% 94% 96% 97% 44% 45% 42% 26%
Dew Point 53° 53° 53° 52° 52° 51° 51° 50°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 64° 70° N/A 60°
Low 41° 46° N/A 43°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:14 of sunlight, then sets at 6:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:11 AM with 13:19 of moolight, then sets at 5:30 PM

Top Story

Crystal Lake Weather Report

Drier Air Heads into Chicago Following Storms

September 21, 2014; 5:00 AM ET

After storms clipped Chicagoland early Sunday, drier air will filter into the area for the rest of the week. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps