Winchester, ID Climate


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United States / Idaho / No Metro Area / Lewis County / Winchester / Zip Codes
Winchester, Idaho has a semi-arid climate with hot summers and cold winters. The temperature in summer can reach up to 90°F while in winter temperatures drop to the teens and low twenties. Precipitation is light throughout the year with average annual precipitation of about 10 inches. With warm, dry summers and cool winters, Winchester is a great place for those who enjoy all four seasons.

Winchester, Idaho gets 22 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Winchester averages 67 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 170 sunny days per year in Winchester. The US average is 205 sunny days.

Winchester gets some kind of precipitation, on average, 138 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 78 degrees
Winter Low: the January low is 23
Rain: averages 22 inches of rain a year
Snow: averages 67 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Winchester is 6.3 (10=best), which means it is less comfortable than most places in Idaho.

8.9 Summer - 3.9 Winter
July, August and September are the most pleasant months in Winchester, while December and January are the least comfortable months.

  ClimateWinchester, IdahoUnited States
  22.0 in.38.1 in.
  67.4 in.27.8 in.
  138.3 days106.2 days
  170 days205 days
  78.1°85.8°
  22.5°21.7°
  6.37
  3.14.3
  3980 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.

August is the hottest month for Winchester with an average high temperature of 78.9°, which ranks it as one of the coolest places in Idaho. In Winchester, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Winchester are July, August and September.
In Winchester, there are 4.8 days annually when the high temperature is over 90°, which is one of the coolest places in Idaho.
December has the coldest nighttime temperatures for Winchester with an average of 20.9°. This is warmer than most places in Idaho.
In Winchester, there are 156.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Idaho.
In Winchester, there are 3.5 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Idaho.
Humidity is low in Winchester, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.
May is the wettest month in Winchester with 3.0 inches of rain, and the driest month is August with 1.0 inches. The wettest season is Summer with 34% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 22.0 inches in Winchester means that it is wetter than most places in Idaho.
November is the rainiest month in Winchester with 15.5 days of rain, and August is the driest month with only 6.0 rainy days. There are 138.3 rainy days annually in Winchester, which is one of the rainiest places in Idaho. The rainiest season is Summer when it rains 32% of the time and the driest is Autumn with only a 18% chance of a rainy day.
An annual snowfall of 67.4 inches in Winchester means that it is snowier than most places in Idaho. January is the snowiest month in Winchester with 16.2 inches of snow, and 8 months of the year have significant snowfall.
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