Centralia, IL Climate


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United States / Illinois / St. Louis Metro Area / Marion County / Centralia / Zip Codes
Centralia, IL has a humid continental climate with moderately cold winters and hot summers. The average temperature in January is 24°F, and the average temperature in July is 73°F. Precipitation is fairly evenly distributed throughout the year, with an average of almost 46 inches annually. Snowfall can vary greatly from one winter to the next, with the yearly total ranging from as little as 6 inches to over 28 inches. Because of its location near the Mississippi River Valley, Centralia can experience extreme weather events such as tornados, thunderstorms, floods and heat waves.

Centralia, Illinois gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Centralia averages 10 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 Centralia. The US average is 205 sunny days.

Centralia gets some kind of precipitation, on average, 103 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 20
Rain: averages 44 inches of rain a year
Snow: averages 10 inches of snow a year

Bestplaces Comfort Index

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

7.9 Summer - 5.5 Winter
September, May and June are the most pleasant months in Centralia, while January and December are the least comfortable months.

  ClimateCentralia, IllinoisUnited States
  43.6 in.38.1 in.
  10.1 in.27.8 in.
  103.4 days106.2 days
  204 days205 days
  87.6°85.8°
  20.3°21.7°
  7.27
  4.34.3
  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 Centralia with an average high temperature of 87.6°, which ranks it as warmer than most places in Illinois. In Centralia, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Centralia are September, May and June.
In Centralia, there are 28.1 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.
January has the coldest nighttime temperatures for Centralia with an average of 20.3°. This is warmer than most places in Illinois.
In Centralia, there are 106.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.
In Centralia, there are 3.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.
The humidity can be uncomfortably heavy or close in Centralia 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 Centralia.
May is the wettest month in Centralia with 5.2 inches of rain, and the driest month is February with 2.6 inches. The wettest season is Summer with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 43.6 inches in Centralia means that it is wetter than most places in Illinois.
May is the rainiest month in Centralia with 11.2 days of rain, and September is the driest month with only 6.7 rainy days. There are 103.4 rainy days annually in Centralia, 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 Winter with only a 23% chance of a rainy day.
An annual snowfall of 10.1 inches in Centralia means that it is one of the least snowy places in Illinois. February is the snowiest month in Centralia with 3.3 inches of snow, and 4 months of the year have significant snowfall.
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