Alton, Missouri 

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United States / Missouri / No Metro Area / Oregon County / Alton / Zip Codes
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Climate in Alton, Missouri

Alton, Missouri gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Alton averages 6 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 213 sunny days per year in Alton. The US average is 205 sunny days.

Alton gets some kind of precipitation, on average, 92 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 90 degrees
Winter Low: the January low is 22
Rain: averages 46 inches of rain a year
Snow: averages 6 inches of snow a year


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

7.3 / 10
September, May and October are the most pleasant months in Alton, while January and December are the least comfortable months.

Climate Averages
  Alton, MissouriUnited States
  46.4 in.38.1 in.
  6.3 in.27.8 in.
  91.6 days106.2 days
  213 days205 days
  781 ft.2443 ft.


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 Alton with an average high temperature of 89.6°, which ranks it as warmer than most places in Missouri. In Alton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Alton are May, September and June.

January has the coldest nighttime temperatures for Alton with an average of 21.8°. This is warmer than most places in Missouri.

In Alton, there are 40.3 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Alton, there are 107.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Missouri.

In Alton, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.

November is the wettest month in Alton with 4.9 inches of rain, and the driest month is January with 3.0 inches. The wettest season is Summer with 29% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 46.4 inches in Alton means that it is wetter than most places in Missouri.

May is the rainiest month in Alton with 10.2 days of rain, and September is the driest month with only 6.2 rainy days. There are 91.6 rainy days annually in Alton, which is less rainy than most places in Missouri. 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 6.3 inches in Alton means that it is one of the least snowy places in Missouri. February is the snowiest month in Alton with 2.3 inches of snow, and 4 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Alton    4 Reviews
    Like the USA in the 1950's - 4/17/2007
    If your looking for Mayberry this is it, simple lifestyle, people wave at you when passing in traffice. Good family values, quiet,... Read More

    Start Your Review of Alton

    Now living here - 9/20/2006
    Now living here and hope it never loses it quaint appeal. reminds us of the USA in the 1950's. Best move we have ever made in our lives. We are trying to sell our home... Read More

    Best place we have found - 5/9/2006
    To find Alton you have to get lost. It is the nicest town we have ever visited. Low crime 1-2's, great water 100, great air quality 75. Low low low cost of living.... Read More

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