Sherman, IL Climate


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United States / Illinois / Springfield Metro Area / Sangamon County / Sherman / Zip Codes
Sherman, IL experiences all four seasons throughout the year. The summers are hot and humid with temperatures in the upper 80s and low 90s. Winters can be cold with temperatures dropping below zero at times and an average of about 20 inches of snow annually. Spring brings warmer weather with showers while autumn brings cooler temperatures and falling leaves. Overall, the climate in Sherman is mild and humid compared to other parts of Illinois.

Sherman, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sherman averages 18 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 194 sunny days per year in Sherman. The US average is 205 sunny days.

Sherman 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 85 degrees
Winter Low: the January low is 18
Rain: averages 39 inches of rain a year
Snow: averages 18 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Sherman 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 Sherman, while January and December are the least comfortable months.

  ClimateSherman, IllinoisUnited States
  38.7 in.38.1 in.
  17.5 in.27.8 in.
  103.4 days106.2 days
  194 days205 days
  85.2°85.8°
  18.3°21.7°
  7.27
  3.94.3
  581 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 Sherman with an average high temperature of 85.2°, which ranks it as about average compared to other places in Illinois. In Sherman, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sherman are September, May and June.
In Sherman, there are 18.2 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.
January has the coldest nighttime temperatures for Sherman with an average of 18.3°. This is warmer than most places in Illinois.
In Sherman, there are 116.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.
In Sherman, there are 4.8 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 Sherman 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 Sherman.
May is the wettest month in Sherman with 4.5 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 31% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.7 inches in Sherman means that it is about average compared to other places in Illinois.
May is the rainiest month in Sherman with 11.1 days of rain, and February is the driest month with only 6.9 rainy days. There are 103.4 rainy days annually in Sherman, 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 23% chance of a rainy day.
An annual snowfall of 17.5 inches in Sherman means that it is less snowy than most places in Illinois. January is the snowiest month in Sherman with 5.4 inches of snow, and 5 months of the year have significant snowfall.
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