• Tonight

    Sep 15

    Lo 45°

    Partly cloudy

    Bicycling Weather
    • Precip
      35%
    • Hours of Precip
      0
    • Wind
      Gust
      11 mph
    more
  • Tue

    Sep 16

    63°Lo 46°

    Mostly sunny

    Excellent for biking
    • Precip
      3%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
  • Wed

    Sep 17

    67°Lo 48°

    Mostly sunny and pleasant

    Excellent for biking
    • Precip
      6%
    • Hours of Precip
      0
    • Wind
      Gust
      7 mph
    more
  • Thu

    Sep 18

    67°Lo 52°

    Partly sunny and pleasant

    Excellent for biking
    • Precip
      4%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
  • Fri

    Sep 19

    73°Lo 61°

    Pleasant with clouds and sun

    Excellent for biking
    • Precip
      11%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
    more
Next Previous
Hi 67° RealFeel® 69° Precipitation 4%

Day

N

E

S

W

  • ESE 6 mph
  • Gusts: 10 mph

Partly sunny and pleasant

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 52° RealFeel® 47° Precipitation 7%

Night

N

E

S

W

  • SE 6 mph
  • Gusts: 10 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 67° 74° 94° (1955) 81°
Low 52° 53° 40° (1903) 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:35 AM with 12:21 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:23 AM with 14:27 of moolight, then sets at 3:50 PM

Top Story

Mount Prospect Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 15, 2014; 9:18 AM 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 >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.