Measurements:
°C
°F
Saint Charles
70°F
N 5 mph
Feels like: 70°F
Precip: 1%
World Resorts USA Saint Charles Weather August Weather in Saint Charles

Saint Charles Weather: August

Average Day Temperature: 90.4°F
Average Night Temperature: 73.6°F
Number of Sunny Days: 16 days
Sunshine Hours: 13.1 - 14.2 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.4 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

The highest day temperature in August 2026 was 107°F. The lowest night temperature was 61°F. The average values for day and night temperatures during August were 93.3°F и 73.8°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Saint Charles is 1.4 in. It makes august one of the most rainy months of the year.

Wind Speed in August, mph

The average wind speed in August is 6.6 mph. It makes August one of the most windless months of the year for Saint Charles.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Saint Charles in August is 9.2 hours.

Best Time to Visit Saint Charles
The most sunny months:
October 19 days
September 18 days
August 16 days
The most warm months:
July 91.9 °F
August 90.4 °F
June 88.1 °F
The most cold months:
January 34.3 °F
February 41.1 °F
December 43.2 °F
The most rainy months:
May 4 days
April 3 days
March 3 days
The most windy months:
March 10 mph
April 9 mph
February 8 mph

Saint Charles on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +58
Hawaii +80
Houston +76
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +66
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +74
Washington +56
24 Hours Weather Forecast
Saint Charles
Local time: 21:39
27 oct, tuesday
0000 66°F
N
6 mph
0300 64°F
N
5 mph
0600 62°F
N
4 mph
0900 64°F
N
6 mph
1200 72°F
N
7 mph
1500 76°F
N
6 mph
1800 72°F
N
6 mph
2100 68°F
N
5 mph