• Mon

    Sep 14

    68°Lo 49°

    Increasing cloudiness

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

    Sep 15

    67°Lo 54°

    Rain

    Ragweed Pollen Weather
    • Precip
      79%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      87%
    more
  • Wed

    Sep 16

    66°Lo 53°

    Sunny intervals

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      54%
    more
  • Thu

    Sep 17

    67°Lo 53°

    Turning out cloudy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      66%
    more
  • Fri

    Sep 18

    67°Lo 50°

    Sun followed by clouds

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      52%
Next Previous
Hi 67° RealFeel® 67° Precipitation 25%

Day

N

E

S

W

  • E 8 mph
  • Gusts: 16 mph

Sun followed by clouds

  • 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 50° RealFeel® 40° Precipitation 62%

Night

N

E

S

W

  • ESE 10 mph
  • Gusts: 16 mph

Considerable cloudiness with a little rain

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0.16 in
  • Rain: 0.16 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2014
High 67° 72° N/A 64°
Low 50° 48° N/A 40°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 12:22 of sunlight, then sets at 6:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:33 AM with 10:24 of moolight, then sets at 9:57 PM

Crystal Lake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 30, 2015; 6:00 PM ET

A turn to warmer conditions is in store for the Chicago area heading into the new week. more >