Oreana, IL Climate


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United States / Illinois / Decatur Metro Area / Macon County / Oreana / Zip Codes
Oreana, IL enjoys a typical middle-latitude humid continental climate. Summers are hot and humid with average temperatures ranging from the high 70s to low 90s Fahrenheit. Winters tend to be cold with temperatures averaging between the 10s and 30s Fahrenheit. Precipitation is fairly evenly distributed throughout the year with occasional snowfall during winter months. Overall, the climate in Oreana, IL is mild and pleasant for most of the year.

Oreana, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 197 sunny days per year in Oreana. The US average is 205 sunny days.

Oreana gets some kind of precipitation, on average, 110 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 86 degrees
Winter Low: the January low is 18
Rain: averages 40 inches of rain a year
Snow: averages 14 inches of snow a year

Bestplaces Comfort Index

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

8.4 Summer - 5.2 Winter
September, June and May are the most pleasant months in Oreana, while January and December are the least comfortable months.

  ClimateOreana, IllinoisUnited States
  39.8 in.38.1 in.
  14.1 in.27.8 in.
  109.8 days106.2 days
  197 days205 days
  86.3°85.8°
  18.3°21.7°
  7.27
  3.94.3
  689 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 Oreana with an average high temperature of 86.3°, which ranks it as warmer than most places in Illinois. In Oreana, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oreana are September, May and June.
In Oreana, there are 21.9 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.
January has the coldest nighttime temperatures for Oreana with an average of 18.3°. This is warmer than most places in Illinois.
In Oreana, there are 116.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.
In Oreana, there are 5.1 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 Oreana 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 Oreana.
May is the wettest month in Oreana with 4.5 inches of rain, and the driest month is January with 2.0 inches. The wettest season is Autumn with 31% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 39.8 inches in Oreana means that it is wetter than most places in Illinois.
May is the rainiest month in Oreana with 11.9 days of rain, and September is the driest month with only 7.3 rainy days. There are 109.8 rainy days annually in Oreana, which is rainier 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 23% chance of a rainy day.
An annual snowfall of 14.1 inches in Oreana means that it is less snowy than most places in Illinois. January is the snowiest month in Oreana with 4.8 inches of snow, and 4 months of the year have significant snowfall.
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