• Tonight

    Sep 17

    Lo 45°

    Clear to partly cloudy

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

    Sep 18

    70°Lo 50°

    Mostly sunny and pleasant

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

    Sep 19

    74°Lo 60°

    Times of clouds and sun

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

    Sep 20

    79°Lo 59°

    A couple of p.m. t-storms

    Low ragweed pollen levels
    • Precip
      63%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      78%
    more
  • Sun

    Sep 21

    73°Lo 51°

    Clouds giving way to some sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      51%
    more
Next Previous
Partly cloudy 49° Lo 45° RealFeel® 49° / 44°

N

E

S

W

  • Precipitation: 2%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 90%
  • Cloud Cover: 26%
  • Dew Point: 44° F
  • Visibility: 10 mi
3 mph

Temperature History - Sep 17

more Historical Weather Data >
  Today Normal Record 9/17/2013
High 70° 72° N/A 70°
Low 45° 48° N/A 35°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:35 AM with 12:25 of sunlight, then sets at 7:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:30 AM with 14:43 of moolight, then sets at 3:13 PM

Top Story

Crystal Lake Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 17, 2014; 1:12 PM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps