• Tonight

    Apr 21

    Lo 31°

    Partly cloudy and cold

    Hair Frizz Weather
    • Wind
      Gust
      41 mph
    • Precip
      25%
    • Hours of Precip
      0
  • Wed

    Apr 22

    50°Lo 28°

    Partly sunny, windy and cool

    Unlikely for hair frizz
    • Wind
      Gust
      32 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Thu

    Apr 23

    55°Lo 30°

    Breezy with plenty of sun

    Unlikely for hair frizz
    • Wind
      Gust
      29 mph
    • Precip
      6%
    • Hours of Precip
      0
    more
  • Fri

    Apr 24

    60°Lo 37°

    Sun giving way to clouds

    Unlikely for hair frizz
    • Wind
      Gust
      14 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Sat

    Apr 25

    52°Lo 32°

    Cool with occasional rain

    Watch for hair frizz
    • Wind
      Gust
      18 mph
    • Precip
      65%
    • Hours of Precip
      3
    more
Next Previous
Hi 51° RealFeel® 41° Precipitation 25%

Day

N

E

S

W

  • W 24 mph
  • Gusts: 41 mph

Strong winds gradually subsiding; mostly cloudy and warmer

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 31° RealFeel® 17° Precipitation 24%

Night

N

E

S

W

  • W 14 mph
  • Gusts: 26 mph

Partly cloudy, breezy and cold; there will be a freeze

  • Max UV Index: N/A
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2014
High 51° 62° 89° (1987) 71°
Low 31° 40° 22° (1988) 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:06 AM with 13:36 of sunlight, then sets at 7:42 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:22 AM with 14:44 of moolight, then sets at 11:06 PM

DeKalb Weather Report

Chicago: Temperatures to Plummet After Extended Warm Spell

April 21, 2015; 11:17 AM ET

After a two-week stretch of above-normal temperatures, Chicago is set to fall into a chilly pattern into late this week. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Tue. Hair Frizz

Tue. Wind Maps

Tue. UV Index