• Tue

    Aug 18

    77°Lo 66°

    Mainly cloudy and less humid

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      51%
    more
  • Wed

    Aug 19

    78°Lo 63°

    Brilliant sunshine

    Ragweed Pollen Weather
    • Precip
      10%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      7%
    more
  • Thu

    Aug 20

    78°Lo 62°

    Cloudy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      97%
    more
  • Fri

    Aug 21

    78°Lo 65°

    Cloudy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      95%
  • Sat

    Aug 22

    78°Lo 69°

    A bit of afternoon rain

    Ragweed Pollen Weather
    • Precip
      57%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      90%
    more
Next Previous
Hi 78° RealFeel® 78° Precipitation 25%

Day

N

E

S

W

  • SW 5 mph
  • Gusts: 9 mph

Cloudy

  • Max UV Index: 3 (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 65° RealFeel® 62° Precipitation 25%

Night

N

E

S

W

  • S 8 mph
  • Gusts: 14 mph

Mostly cloudy

  • 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 - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2014
High 78° 79° N/A 76°
Low 65° 58° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:07 AM with 13:38 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:43 PM with 10:36 of moolight, then sets at 11:19 PM

Crystal Lake Weather Report

Chicago: Cooler Conditions to Last Through Week

August 3, 2015; 3:08 PM ET

The Chicagoland area will experience cooler weather throughout the week. more >