• Early AM

    Mar 4

    Lo 13°

    Colder

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Mar 4

    18°Lo -3°

    Colder with clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Thu

    Mar 5

    12°Lo 1°

    Sunny and frigid

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

    Mar 6

    27°Lo 21°

    Breezy with partial sunshine

    Low ragweed pollen levels
    • Precip
      13%
    • Wind
      Speed
      17 mph
    • Cloud
      Cover
      42%
    more
  • Sat

    Mar 7

    38°Lo 22°

    Partly sunny and not as cold

    Low ragweed pollen levels
    • Precip
      6%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      44%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
1pm
2pm 3pm 4pm 5pm 6pm 7pm 8pm
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Forecast
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Cloudy
Mostly Clear
Mostly Clear
Temp (°F) 16° 17° 18° 16° 14° 11°
RealFeel® -2° -4° -6° -9° -11°
Humidity 60% 57% 53% 57% 61% 66% 70% 73%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Rain
 
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Snow
 
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Ice
 
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  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Wind (mph) 16 NW 16 WNW 16 WNW 15 WNW 15 WNW 14 WNW 14 WNW 14 WNW
UV Index 3 3 2 1 0 0 0 0
Cloud Cover 46% 46% 46% 46% 46% 46% 10% 10%
Dew Point
Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F Middle Grid line 5 F

Temperature History - Mar 4

more Historical Weather Data >
  Today Normal Record 3/4/2014
High 18° 38° N/A 20°
Low -3° 19° N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:24 AM with 11:23 of sunlight, then sets at 5:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:05 PM with 13:03 of moolight, then sets at 6:08 AM

Crystal Lake Weather Report

Chicago: Bitter Cold to Depart by the Weekend

March 4, 2015; 4:03 AM ET

While frigid conditions will encompass the Chicago area over the next couple of days, the weekend will offer a break from the bitter cold. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps