Winchester, IL Climate


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United States / Illinois / Jacksonville Metro Area / Scott County / Winchester / Zip Codes
Winchester, IL enjoys a four-season climate with cool winters and warm summers. The average high temperature in July is 88°F and the average low temperature in January is 21°F. The town experiences an average of 40 inches of precipitation annually, with most of it occurring during the spring and summer months. During winter months, Winchester can expect to see snowfall averaging around 19 inches per year. On average, the area sees around 200 sunny days per year.

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

Winchester averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Winchester. The US average is 205 sunny days.

Winchester gets some kind of precipitation, on average, 107 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 87 degrees
Winter Low: the January low is 18
Rain: averages 40 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Winchester is 7.1 (10=best), which means it is more comfortable than most places in Illinois.

8.1 Summer - 5.3 Winter
September, June and May are the most pleasant months in Winchester, while January and December are the least comfortable months.

  ClimateWinchester, IllinoisUnited States
    Unlock38.1 in.
  17.2 in.  Unlock
    Unlock106.2 days
  202 days  Unlock
  86.9°85.8°
    Unlock21.7°
  7.1  Unlock
    Unlock4.3
  541 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 Winchester with an average high temperature of 86.9°, which ranks it as warmer than most places in Illinois. In Winchester, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Winchester are September, May and June.
In Winchester, there are 24.4 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.
January has the coldest nighttime temperatures for Winchester with an average of 18.0°. This is warmer than most places in Illinois.
In Winchester, there are 118.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.
In Winchester, there are 4.5 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 Winchester 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 Winchester.
May is the wettest month in Winchester with 4.5 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 30% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 39.6 inches in Winchester means that it is wetter than most places in Illinois.
May is the rainiest month in Winchester with 11.6 days of rain, and January is the driest month with only 6.8 rainy days. There are 106.8 rainy days annually in Winchester, which is about average compared to other places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 21% chance of a rainy day.
An annual snowfall of 17.2 inches in Winchester means that it is less snowy than most places in Illinois. December is the snowiest month in Winchester with 5.0 inches of snow, and 4 months of the year have significant snowfall.
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