Winchester, MO Climate


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United States / Missouri / St. Louis Metro Area / St. Louis County / Winchester / Zip Codes
Winchester, MO has a temperate climate with four distinct seasons. Summers are hot and humid with occasional thunderstorms, while winters tend to be cold and dry. Spring and fall are mild but can bring storms from time to time. Rainfall averages about 40 inches per year with snowfall averaging just over 15 inches annually. On average the city enjoys around 2,000 hours of sunshine each year, making it a great place to explore the outdoors throughout the year.

Winchester, Missouri gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Winchester averages 12 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 199 sunny days per year in Winchester. The US average is 205 sunny days.

Winchester gets some kind of precipitation, on average, 98 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 21
Rain: averages 44 inches of rain a year
Snow: averages 12 inches of snow a year

Bestplaces Comfort Index

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

7.7 Summer - 5.7 Winter
September, May and June are the most pleasant months in Winchester, while January and December are the least comfortable months.

  ClimateWinchester, MissouriUnited States
    Unlock38.1 in.
  12.3 in.  Unlock
    Unlock106.2 days
  199 days  Unlock
  88.0°85.8°
    Unlock21.7°
  7.3  Unlock
    Unlock4.3
  623 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 88.0°, which ranks it as about average compared to other places in Missouri. 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 32.9 days annually when the high temperature is over 90°, which is about average compared to other places in Missouri.
January has the coldest nighttime temperatures for Winchester with an average of 21.3°. This is warmer than most places in Missouri.
In Winchester, there are 101.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.
In Winchester, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Missouri.
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 5.0 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 28% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 43.8 inches in Winchester means that it is about average compared to other places in Missouri.
May is the rainiest month in Winchester with 10.8 days of rain, and January is the driest month with only 6.4 rainy days. There are 97.8 rainy days annually in Winchester, which is about average compared to other places in Missouri. 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 12.3 inches in Winchester means that it is less snowy than most places in Missouri. February is the snowiest month in Winchester with 3.7 inches of snow, and 5 months of the year have significant snowfall.
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