Royalton, IL Climate


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United States / Illinois / No Metro Area / Franklin County / Royalton / Zip Codes
Royalton, IL has a humid continental climate that is characterized by hot, humid summers and cold, moderately snowy winters. The average annual temperature in Royalton is 8.7°C (47.7°F) with an average high temperature of 24°C (75.2°F) in July and an average low temperature of -6.2°C (20.8°F) in January. Precipitation levels are relatively high throughout the year at roughly 40 inches annually, with the wettest months being April and May as well as October through December. Snowfall can reach up to 30 inches during the winter months, so those who plan to visit should be prepared for colder weather!

Royalton, Illinois gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Royalton averages 11 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 203 sunny days per year in Royalton. The US average is 205 sunny days.

Royalton gets some kind of precipitation, on average, 94 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 24
Rain: averages 45 inches of rain a year
Snow: averages 11 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Royalton is 7.3 (10=best), which means it is one of the most pleasant places in Illinois.

7.4 Summer - 5.8 Winter
September, May and October are the most pleasant months in Royalton, while January and December are the least comfortable months.

  ClimateRoyalton, IllinoisUnited States
    Unlock38.1 in.
  11.1 in.  Unlock
    Unlock106.2 days
  203 days  Unlock
  88.6°85.8°
    Unlock21.7°
  7.3  Unlock
    Unlock4.3
  390 ft.  Unlock
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 Royalton with an average high temperature of 88.6°, which ranks it as one of the hottest places in Illinois. In Royalton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Royalton are May, September and June.
In Royalton, there are 35.0 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 Royalton with an average of 23.8°. This is one of the warmest places in Illinois.
In Royalton, there are 94.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.
In Royalton, there are 1.4 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 Royalton 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 Royalton.
May is the wettest month in Royalton with 5.3 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 45.1 inches in Royalton means that it is one of the wettest places in Illinois.
May is the rainiest month in Royalton with 10.2 days of rain, and September is the driest month with only 6.1 rainy days. There are 93.8 rainy days annually in Royalton, which is one of the least rainy 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 11.1 inches in Royalton means that it is less snowy than most places in Illinois. February is the snowiest month in Royalton with 3.5 inches of snow, and 4 months of the year have significant snowfall.
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