• Tonight

    Aug 20

    Lo 67°

    A shower or thunderstorm late

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Thu

    Aug 21

    85°Lo 72°

    A couple of thunderstorms

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

    Aug 22

    90°Lo 70°

    Periods of sun with a t-storm

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

    Aug 23

    84°Lo 67°

    Partly sunny with a t-storm

    Moderate ragweed pollen levels
    • Precip
      58%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
    more
  • Sun

    Aug 24

    88°Lo 69°

    Very warm with clouds and sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 84° RealFeel® 87° Precipitation 35%

Day

N

E

S

W

  • W 6 mph
  • Gusts: 15 mph

Partly sunny

  • Max UV Index: 6 (High)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 67° RealFeel® 65° Precipitation 57%

Night

N

E

S

W

  • S 3 mph
  • Gusts: 4 mph

Increasing cloudiness with a shower or thunderstorm around late

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.09 in
  • Rain: 0.09 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Grayslake Pollen Levels - August 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Moderate

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Aug 20

more Historical Weather Data >
  Today Normal Record 8/20/2013
High 84° 80° N/A 87°
Low 67° 63° N/A 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:04 AM with 13:42 of sunlight, then sets at 7:46 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:43 AM with 14:49 of moolight, then sets at 4:32 PM

Top Story

Grayslake Weather Report

Chicago: Threat of Thunderstorms Lingers After Heavy Rains Flood Wrigley Field

August 20, 2014; 6:00 PM ET

While there may be a mix of sunshine and clouds over the area, Chicago is facing more rounds of thunderstorms over the next several days. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps