St. Martins, MO Climate


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St. Martins, MO enjoys a humid subtropical climate with hot and humid summers and mild winters. Average temperatures in the summer range from the mid-80s to low 90s during the day, cooling to temperatures in the mid-60s at night. Winters are much milder than other parts of Missouri, with average daytime highs in the mid-40s and overnight lows in the low 30s on average. Precipitation is plentiful throughout the year with an average annual rainfall of 39 inches, most of which occurs from April through October.

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

St. Martins averages 14 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in St. Martins. The US average is 205 sunny days.

St. Martins gets some kind of precipitation, on average, 106 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 14 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Martins is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

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

  ClimateSt. Martins, MissouriUnited States
  43.6 in.38.1 in.
  13.5 in.27.8 in.
  105.8 days106.2 days
  196 days205 days
  88.2°85.8°
  21.0°21.7°
  7.27
  4.34.3
  778 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.

July is the hottest month for St. Martins with an average high temperature of 88.2°, which ranks it as about average compared to other places in Missouri. In St. Martins, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Martins are September, May and June.
In St. Martins, there are 32.4 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 St. Martins with an average of 21.0°. This is about average compared to other places in Missouri.
In St. Martins, there are 103.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.
In St. Martins, there are 2.8 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 St. Martins 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 St. Martins.
May is the wettest month in St. Martins with 5.2 inches of rain, and the driest month is January with 2.0 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 43.6 inches in St. Martins means that it is about average compared to other places in Missouri.
May is the rainiest month in St. Martins with 12.0 days of rain, and January is the driest month with only 6.8 rainy days. There are 105.8 rainy days annually in St. Martins, which is one of the rainiest places in Missouri. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 20% chance of a rainy day.
An annual snowfall of 13.5 inches in St. Martins means that it is about average compared to other places in Missouri. January is the snowiest month in St. Martins with 4.4 inches of snow, and 5 months of the year have significant snowfall.
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