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    • Tonight

      Sep 26

      45° Lo F
      Clear
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Tue

      Sep 27

      65° /47°
      Turning out cloudy and breezy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      62° /52°
      A morning shower in spots
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      69° /53°
      Rain tapering off
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      67° /56°
      Partly sunny, showers around
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Monday
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    Forecast Mostly Sunny Mostly Clear Clear Clear Clear Clear Clear Clear
    Temp (°F) 63° 60° 58° 56° 55° 53° 52° 52°
    RealFeel® 59° 56° 56° 54° 53° 52° 51° 50°
    Wind (mph) 16 W 9 W 7 W 6 W 6 WSW 5 WSW 5 WSW 5 WSW
    precip
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    Rain
    1%
    1%
    0%
    0%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 19% 10% 2% 5% 7% 7% 6% 4%
    Humidity 46% 50% 52% 60% 64% 65% 70% 72%
    Dew Point 42° 41° 41° 43° 43° 42° 43° 43°
    Temp °F
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    65° 60° 55° 50°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 68° 71° 89° (1998) 78°
    Low 45° 50° 38° (2000) 53°

    Sunrise/Sunset

    • Sunrise: 6:46 AM
    • Sunset: 6:42 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:20 AM
    • Moonset: 4:33 PM
    • Duration: 14:13 hr
    Astronomy

    St. Charles Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 4:43 PM ET

    Gusty winds will accompany a push of chilly air across the Great Lakes through Tuesday. More >

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps