• Tonight

    Sep 20

    Lo 57°

    A thunderstorm in the area

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Sun

    Sep 21

    65°Lo 43°

    Cooler; a shower in the a.m.

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

    Sep 22

    66°Lo 47°

    Sunny to partly cloudy

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

    Sep 23

    71°Lo 49°

    Mostly sunny and pleasant

    Low ragweed pollen levels
    • Precip
      5%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      11%
    more
  • Wed

    Sep 24

    73°Lo 50°

    Sunny and pleasant

    Ragweed Pollen Weather
    • Precip
      10%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      10%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
1pm
2pm 3pm 4pm 5pm 6pm 7pm 8pm
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Forecast
T-storms
T-storms
T-storms
Partly Cloudy
Partly Sunny
Partly Sunny
Mostly Clear
Mostly Clear
Temp (°F) 74° 74° 74° 73° 72° 71° 70° 69°
RealFeel® 74° 75° 73° 73° 71° 69° 67° 66°
Humidity 77% 87% 84% 84% 83% 83% 84% 89%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Rain
 
51%
 
51%
 
55%
 
49%
 
34%
 
34%
 
34%
 
34%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Wind (mph) 13 SW 13 WSW 11 SW 10 SW 10 SW 9 WSW 9 WSW 7 SSW
UV Index 4 3 2 2 1 0 0 0
Cloud Cover 83% 93% 91% 66% 43% 31% 19% 26%
Dew Point 67° 70° 69° 68° 67° 66° 65° 65°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 74° 71° N/A 73°
Low 57° 47° N/A 53°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 12:16 of sunlight, then sets at 6:54 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:15 AM with 13:45 of moolight, then sets at 5:00 PM

Top Story

Crystal Lake Weather Report

Chicago: Thunderstorms to Precede More Cool Air

September 20, 2014; 4:28 AM ET

Chicago is facing the threat of some disruptive thunderstorms on Saturday. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps