• Tonight

    Sep 17

    Lo 45°

    Clear to partly cloudy

    Migraine Headache Weather
    • Hi
      RealFeel
      71°
    • UV
      5 - Moderate
    • Cloud
      Cover
      25%
  • Thu

    Sep 18

    70°Lo 50°

    Mostly sunny and pleasant

    Beneficial weather for migraines
    • Hi
      RealFeel
      71°
    • UV
      5 - Moderate
    • Cloud
      Cover
      14%
    more
  • Fri

    Sep 19

    74°Lo 60°

    Times of clouds and sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      73°
    • UV
      5 - Moderate
    • Cloud
      Cover
      46%
    more
  • Sat

    Sep 20

    79°Lo 59°

    A couple of p.m. t-storms

    Beneficial weather for migraines
    • Hi
      RealFeel
      78°
    • UV
      3 - Moderate
    • Cloud
      Cover
      78%
    more
  • Sun

    Sep 21

    73°Lo 51°

    Clouds giving way to some sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      72°
    • UV
      4 - Moderate
    • Cloud
      Cover
      51%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
7pm
8pm 9pm 10pm 11pm Thu
12am
1am 2am
  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Forecast
Sunny
Clear
Clear
Clear
Clear
Clear
Clear
Mostly Clear
Temp (°F) 62° 57° 56° 54° 52° 51° 50° 49°
RealFeel® 60° 56° 55° 53° 52° 51° 50° 49°
Humidity 61% 71% 76% 81% 85% 86% 86% 87%
   
  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Rain
 
0%
 
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0%
 
0%
 
0%
Snow
 
0%
 
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Ice
 
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  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Wind (mph) 4 WNW 4 ESE 3 SSW 2 SSW 1 SSW 1 SW 1 W 2 NW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 8% 3% 2% 1% 0% 0% 0% 25%
Dew Point 48° 48° 49° 48° 47° 47° 46° 45°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Sep 17

more Historical Weather Data >
  Today Normal Record 9/17/2013
High 70° 72° N/A 70°
Low 45° 48° N/A 35°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:35 AM with 12:25 of sunlight, then sets at 7:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:30 AM with 14:43 of moolight, then sets at 3:13 PM

Top Story

Crystal Lake Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 17, 2014; 1:12 PM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

Wed. Migraine Headache

Wed. UV Index