• Today

    May 31

    82°Lo 63°

    A p.m. t-storm in spots

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      3 - Moderate
  • Wed

    Jun 1

    78°Lo 56°

    Showers and a heavier t-storm

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      3 - Moderate
    more
  • Thu

    Jun 2

    77°Lo 53°

    Partly sunny and less humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      3 - Moderate
    more
  • Fri

    Jun 3

    80°Lo 62°

    Sunshine and nice

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      3 - Moderate
    more
  • Sat

    Jun 4

    79°Lo 58°

    Mostly cloudy with a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
8am
9am 10am
  8am 9am 10am
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 69° 72° 75°
RealFeel® 69° 74° 78°
Humidity 72% 64% 58%
   
  8am 9am 10am
Rain
 
5%
 
5%
 
6%
Snow
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
   
  8am 9am 10am
Wind (mph) 6 SE 8 SE 9 ESE
UV Index 1 3 4
Cloud Cover 59% 51% 52%
Dew Point 60° 59° 60°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - May 31

more Historical Weather Data >
  Today Normal Record 5/31/2015
High 82° 75° N/A 56°
Low 63° 53° N/A 43°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:19 AM with 15:04 of sunlight, then sets at 8:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:32 AM with 12:36 of moolight, then sets at 3:08 PM

Crystal Lake Weather Report

Strong storms to take aim at Chicago, Minneapolis and St. Louis into midweek

May 31, 2016; 12:59 PM ET

The potential for locally dangerous and disruptive thunderstorms will exist over the Midwest during Tuesday and Wednesday. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps