• Today

    Sep 19

    73°Lo 58°

    Mostly sunny and breezy

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

    Sep 20

    79°Lo 57°

    Strong t-storms, mainly later

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

    Sep 21

    70°Lo 48°

    Breezy with clouds breaking

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

    Sep 22

    69°Lo 48°

    Times of clouds and sun

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
  • Tue

    Sep 23

    73°Lo 50°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      6%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      11%
    more
Next Previous
Hi 69° RealFeel® 71° Precipitation 0%

Day

N

E

S

W

  • W 5 mph
  • Gusts: 9 mph

Times of clouds and sun

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 48° RealFeel® 46° Precipitation 6%

Night

N

E

S

W

  • WSW 4 mph
  • Gusts: 7 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 22

more Historical Weather Data >
  Today Normal Record 9/22/2013
High 69° 70° N/A 63°
Low 48° 46° N/A 37°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:11 of sunlight, then sets at 6:51 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:08 AM with 12:51 of moolight, then sets at 5:59 PM

Top Story

Crystal Lake Weather Report

Chicago: Chance of Interrupting Thunderstorms for Weekend

September 19, 2014; 5:18 AM ET

Chicago is facing a mostly clear weekend with the threat of some disruptive thunderstorms on Saturday. more >

Mon. Dust & Dander

Mon. Wind Maps