• Early AM

    Apr 21

    Lo 50°

    Mostly cloudy

    Dust & Dander Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Today

    Apr 21

    72°Lo 40°

    Couple of showers, t-storms

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Tue

    Apr 22

    57°Lo 33°

    Cooler with clouds breaking

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Wed

    Apr 23

    58°Lo 38°

    Partly sunny

    Moderate indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      35%
    more
  • Thu

    Apr 24

    66°Lo 48°

    A couple of thunderstorms

    Moderate indoor dust & dander levels
    • Precip
      61%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      94%
    more
Next Previous
A couple of showers and thunderstorms 72° Lo 65° RealFeel® 72° / 60°

N

E

S

W

  • Precipitation: 61%
  • Rain: 0.12 in
  • Snow: 0 in
  • Humidity: 66%
  • Cloud Cover: 96%
  • Dew Point: 58° F
  • Visibility: 8 mi
10 mph

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 72° 59° N/A 48°
Low 40° 37° N/A 27°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 13:35 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:22 AM with 10:00 of moolight, then sets at 10:22 AM

Top Story

Crystal Lake Weather Report

Rain Coming to Chicago with Roller Coaster Temperatures

April 20, 2014; 8:10 PM ET

A showery pattern with up-and-down temperatures is coming this week to Chicago. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps