Average humidity in St. Charles (MO)
On this page you find more information about the monthly relative humidity over the year in St. Charles (Missouri), the United States of America.
St. Charles shows variation in the level of humidity throughout the year. The highest humidity is noted duing December, it reaches up to 74%, which is categorized as high. On the other hand, the lowest humidity is recorded in April, with levels falling to 63%.
The average humidity in St. Charles is approximately 69%, which is high.
Humidity is an essential factor in how you experience temperature. During the warmest month, July, the temperature is around 31°C. When this period is accompanied by high humidity, it results in a higher perceived temperature. This can cause greater discomfort, while in winter it can make the air feel much colder, adding to the cooler temperatures. Check out our detailed temperature page for more information.
Forecast for St. Charles (MO)
Sun Dec 22
7°C | -4°C
SE 
6 m/s
6 m/s
clear and no rain
Mon Dec 23
10°C | 3°C
SW 5 m/s
5 m/s
overcast and no rain
Tue Dec 24
8°C | 3°C
E 4 m/s
4 m/s7 mm
overcast and rain
