St. Charles, Missouri 

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Climate in St. Charles, Missouri

St. Charles, Missouri gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Charles averages 14 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in St. Charles. The US average is 205 sunny days.

St. Charles gets some kind of precipitation, on average, 106 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 21
Rain: averages 42 inches of rain a year
Snow: averages 14 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for St. Charles is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

7.2 / 10
September, May and June are the most pleasant months in St. Charles, while January and December are the least comfortable months.

Climate Averages
  St. Charles, MissouriUnited States
  42.2 in.38.1 in.
  14.2 in.27.8 in.
  105.9 days106.2 days
  202 days205 days
  88.3°85.8°
  21.3°21.7°
  7.27
  4.44.3
  492 ft.2443 ft.
CLIMATE

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.


July is the hottest month for St. Charles with an average high temperature of 88.3°, which ranks it as about average compared to other places in Missouri. In St. Charles, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Charles are September, May and June.


January has the coldest nighttime temperatures for St. Charles with an average of 21.3°. This is warmer than most places in Missouri.


In St. Charles, there are 33.5 days annually when the high temperature is over 90°, which is about average compared to other places in Missouri.


In St. Charles, there are 100.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.


In St. Charles, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Missouri.


May is the wettest month in St. Charles with 4.9 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.2 inches in St. Charles means that it is drier than most places in Missouri.


May is the rainiest month in St. Charles with 11.5 days of rain, and September is the driest month with only 7.3 rainy days. There are 105.9 rainy days annually in St. Charles, which is one of the rainiest places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.


An annual snowfall of 14.2 inches in St. Charles means that it is snowier than most places in Missouri. January is the snowiest month in St. Charles with 4.4 inches of snow, and 5 months of the year have significant snowfall.





  • Annual Rainfall (US Avg: 36.5")
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    Reviews for St. Charles    10 Reviews
    Great town to grow up in - 3/26/2018
    I grew up here and I loved everything about the county. There are thousands of little trails all over the place, so when I was a child we would always go running around... Read More

    Start Your Review of St. Charles


    Missouri - 2/22/2015
    It is way too hot & humid here in the summer. Winters are great, except for a lack of... Read More

    St. Charles, Missouri. Good family place. - 11/29/2010
    Good growth, decent economics, below average politics. School system above... Read More


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    63301 63303


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