Glen Carbon, IL Climate


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Glen Carbon, IL has a humid continental climate. The summers are hot with mild to warm temperatures, and the winters are cold with moderate snowfall. Average annual snowfall is 26 inches. Average summer temperatures range from the mid-70s to low 80s while average winter temperatures range from the 20s to low 30s. Rainfall is abundant throughout the year with an average of 42 inches per year. Humidity levels remain high during the summer months and decrease slightly in winter months.

Glen Carbon, Illinois gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Glen Carbon averages 12 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Glen Carbon. The US average is 205 sunny days.

Glen Carbon gets some kind of precipitation, on average, 99 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 89 degrees
Winter Low: the January low is 22
Rain: averages 43 inches of rain a year
Snow: averages 12 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Glen Carbon is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

7.3 Summer - 5.7 Winter
September, May and October are the most pleasant months in Glen Carbon, while January and December are the least comfortable months.

  ClimateGlen Carbon, IllinoisUnited States
  42.9 in.38.1 in.
  11.6 in.27.8 in.
  98.7 days106.2 days
  204 days205 days
  88.8°85.8°
  22.4°21.7°
  7.27
  4.14.3
  466 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 Glen Carbon with an average high temperature of 88.8°, which ranks it as one of the hottest places in Illinois. In Glen Carbon, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Glen Carbon are May, September and June.
In Glen Carbon, there are 36.2 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.
January has the coldest nighttime temperatures for Glen Carbon with an average of 22.4°. This is one of the warmest places in Illinois.
In Glen Carbon, there are 91.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.
In Glen Carbon, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.
The humidity can be uncomfortably heavy or close in Glen Carbon during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in Glen Carbon.
May is the wettest month in Glen Carbon with 5.0 inches of rain, and the driest month is January with 2.5 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 42.9 inches in Glen Carbon means that it is wetter than most places in Illinois.
May is the rainiest month in Glen Carbon with 10.9 days of rain, and September is the driest month with only 6.7 rainy days. There are 98.7 rainy days annually in Glen Carbon, which is less rainy than most places in Illinois. 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 11.6 inches in Glen Carbon means that it is less snowy than most places in Illinois. January is the snowiest month in Glen Carbon with 3.9 inches of snow, and 4 months of the year have significant snowfall.
Reviews for Glen Carbon
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The weather is moderate. Lovely Fall, mild winter with occaisional snow. I own a shovel but the snow melts by the time I need to use it. Rather hot August. Thunderstorms  More

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Over 17 years ago

lots of students that come and  More

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