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Planning ahead in Saint Charles County? Our extended 14-Day Weather Forecast provides comprehensive 2-week predictions, including daily temperature highs/lows, precipitation probabilities, and long-term atmospheric trend outlooks.

Saint Charles County 14-Day Weather Forecast

Sunday, Oct 25, 2026

Nighttime
56°F

Partly Cloudy

Feels like 56°F

Humidity

73%

Wind Speed

4.7 mph

Precipitation

0 in

Pressure

1028 hPa

UV Index

0

Visibility

10 mi

Cloud Cover

44%

Dew Point

47°F

14-Day Extended Weather Forecast

Today

Oct 25

Partly Cloudy
76°H
51°L
0%

Mon

Oct 26

Partly Cloudy
74°H
56°L
0%

Tue

Oct 27

Partly Cloudy
72°H
54°L
0%

Wed

Oct 28

Partly Cloudy
75°H
55°L
0%

Thu

Oct 29

Partly Cloudy
77°H
59°L
0%

Fri

Oct 30

Partly Cloudy
75°H
56°L
0%

Sat

Oct 31

Partly Cloudy
68°H
58°L
0%

Sun

Nov 1

Partly Cloudy
71°H
61°L
0%

Mon

Nov 2

Partly Cloudy
79°H
66°L
0%

Tue

Nov 3

Partly Cloudy
70°H
56°L
0%

Air Quality (AQI)

51Moderate

Air quality is acceptable. However, there may be a risk for some people.

PM2.5

9.7 µg/m³

PM10

9.7 µg/m³

Sun & Moon Phase

Sunrise

6:00 AM

Sunset

8:00 PM

Moon Phase

Waxing Gibbous

Waxing Gibbous

Wind Conditions & Storm Tracking

Wind Direction

164.1° SSE

Sustained Wind

4.7 mph

Wind Gusts

4.7 mph

14-Day Temp Range

Expected 14-Day Swings

51°
79°

High and low limits expected over the next two weeks.

Extended Local Forecasts

14 Day Weather Forecast7 Day Weather ForecastHourly Weather Tracker

Location View

Saint Charles County · 38.78°N, 90.70°W
Radar Page
Coordinates38.7760°N, 90.7016°W
Elevationm
TimezoneAmerica/New_York

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Safety & Environmental Index

MetricValueStatus / Interpretation
Air Quality (AQI)51Moderate
UV Index0Low Risk
Visibility10 milesClear

Frequently Asked Questions

Our 14-day forecast for Saint Charles County shows detailed long-term predictions, including daily high and low temperatures, precipitation chances, and overall weather patterns.

About Saint Charles County Climate & Weather

Weather forecast for Saint Charles County is powered by high-resolution weather models using open-source infrastructure. Check current temperatures, rain radar graphs, hourly wind speeds, humidity values, and ultraviolet indexes directly from our weather tracking console.

Meteorological Data: Weather data for this area is aggregated from global and regional forecast models (GFS, HRRR, ERA5) and updated continuously every hour.