• Today

    Apr 21

    72°Lo 42°

    Couple of showers, t-storms

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

    Apr 22

    57°Lo 33°

    Partly sunny; breezy, cooler

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

    Apr 23

    56°Lo 40°

    A p.m. shower in places

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

    Apr 24

    66°Lo 47°

    A couple of thunderstorms

    Moderate indoor dust & dander levels
    • Precip
      61%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      88%
    more
  • Fri

    Apr 25

    61°Lo 34°

    A shower; colder in the p.m.

    Moderate indoor dust & dander levels
    • Precip
      40%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      26%
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Temperature History - Apr 25

more Historical Weather Data >
  Today Normal Record 4/25/2013
High 61° 60° N/A 50°
Low 34° 38° N/A 32°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 13:49 of sunlight, then sets at 7:46 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:50 AM with 12:14 of moolight, then sets at 4:04 PM

Top Story

Crystal Lake Weather Report

Rain Coming to Chicago with Roller Coaster Temperatures

April 21, 2014; 4:31 AM 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?

Fri. Dust & Dander

Fri. Wind Maps