• Today

    Oct 20

    60°Lo 42°

    Turning cloudy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Tue

    Oct 21

    53°Lo 37°

    Cool with periods of sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    Oct 22

    55°Lo 38°

    Plenty of sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Oct 23

    59°Lo 45°

    More clouds than sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Fri

    Oct 24

    64°Lo 49°

    Partial sunshine

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Mostly Clear
Partly Cloudy
Cloudy
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 47° 46° 47° 49° 50° 53° 55° 57°
RealFeel® 39° 38° 39° 45° 46° 50° 53° 55°
Humidity 82% 84% 84% 82% 79% 75% 70% 67%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 10 SSW 10 SSW 10 SSW 7 SW 8 WSW 8 WNW 9 NW 9 NW
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 25% 40% 54% 0% 8% 23% 25% 25%
Dew Point 42° 41° 42° 44° 44° 45° 46° 46°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Oct 20

more Historical Weather Data >
  Today Normal Record 10/20/2013
High 60° 61° N/A 61°
Low 42° 42° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:10 AM with 10:53 of sunlight, then sets at 6:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:55 AM with 12:32 of moolight, then sets at 4:27 PM

Arlington Heights Weather Report

Cool Weather Ahead for Chicago

October 20, 2014; 2:26 AM ET

Seasonable temperatures will be the rule this week across Chicagoland. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Mon. Snow Day Potential