Dillon, Montana 

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United States / Montana / No Metro Area / Beaverhead County / Dillon / Zip Codes

Climate in Dillon, Montana

Dillon, Montana gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Dillon averages 21 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 181 sunny days per year in Dillon. The US average is 205 sunny days.

Dillon gets some kind of precipitation, on average, 70 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 Highs & Lows

Summer High: the July high is around 83 degrees
Winter Low: the January low is 12

Dillon ranks 64/100 for Comfort Index

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


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.


Climate Averages
  Dillon, MontanaUnited States
  10.6 in.38.1 in.
  20.7 in.27.8 in.
  69.8 days106.2 days
  181 days205 days
  5102 ft.2443 ft.

July is the hottest month for Dillon with an average high temperature of 83.4°, which ranks it as cooler than most places in Montana. In Dillon, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dillon are August, June and July.

December has the coldest nighttime temperatures for Dillon with an average of 10.5°. This is colder than most places in Montana.

In Dillon, there are 10.2 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Dillon, there are 198.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Montana.

In Dillon, there are 17.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

May is the wettest month in Dillon with 2.0 inches of rain, and the driest month is February with 0.2 inches. The wettest season is Autumn with 39% of yearly precipitation and 8% occurs in Spring, which is the driest season.

The annual rainfall of 10.6 inches in Dillon means that it is one of the driest places in Montana.

An annual snowfall of 20.7 inches in Dillon means that it is one of the least snowy places in Montana.

December is the snowiest month in Dillon with 3.6 inches of snow, and 8 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Dillon    5 Reviews
    Great Place to Live and Raise Kids too! - 5/16/2011
    Small town culture with great schools and an excellent medical community. Pre-school through Post Graduate degrees available from caring dedicated teachers. Friendly... Read More

    Start Your Review of Dillon

    Economic Development in Dillon, Montana - 7/10/2008
    The economic climate in Dillon (Beaverhead County) remains steady amid rising fuel costs, etc. Dillon is the home of many cottage industry and small businesses as well... Read More

    Kalispornian... - 1/4/2008
    I live here because I go to college here. The rent here is cheap but scarce. People tend to be stuck in their ways, and even though I am a fourth-generation Montanan,... Read More

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