• Early AM

    Sep 18

    Lo 46°

    Partly cloudy

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

    Sep 18

    69°Lo 48°

    Mostly sunny and nice

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

    Sep 19

    74°Lo 60°

    Nice with periods of sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Sep 20

    80°Lo 59°

    A couple of p.m. t-storms

    Moderate ragweed pollen levels
    • Precip
      63%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      77%
  • Sun

    Sep 21

    75°Lo 51°

    Clouds giving way to some sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      51%
    more
Next Previous
Hi 80° RealFeel® 79° Precipitation 63%

Day

N

E

S

W

  • WSW 12 mph
  • Gusts: 21 mph

Mostly cloudy and breezy; a couple of afternoon showers and a thunderstorm

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 59° RealFeel® 56° Precipitation 55%

Night

N

E

S

W

  • W 8 mph
  • Gusts: 15 mph

A heavy thunderstorm around in the evening; otherwise, mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.25 in
  • Rain: 0.25 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 80° 74° N/A 74°
Low 59° 53° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 12:19 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:19 AM with 14:08 of moolight, then sets at 4:27 PM

Top Story

Saint Charles 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 >

Sat. Dust & Dander

Sat. Wind Maps