St. Louis, MI Climate

St. Louis, MI has a humid continental climate with warm summers and cold winters. The average temperature in the summer is around 72°F, while the average winter temperature is around 20°F. Precipitation in St. Louis is moderate, with an annual average of 35 inches of rain and 54 inches of snowfall each year. During the summer months there are frequent thunderstorms, often accompanied by high winds and hail. The spring and autumn months tend to be mild but can experience drastic changes in weather patterns, including intense storms and cold spells.

St. Louis, Michigan gets 33 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Louis averages 42 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 176 sunny days per year in St. Louis. The US average is 205 sunny days.

St. Louis gets some kind of precipitation, on average, 111 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 82 degrees
Winter Low: the January low is 15
Rain: averages 33 inches of rain a year
Snow: averages 42 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Louis is 6.7 (10=best), which means it is more comfortable than most places in Michigan.

9.3 Summer - 4.2 Winter

August, July and June are the most pleasant months in St. Louis, while January and February are the least comfortable months.

Climate	St. Louis, Michigan	United States
	Unlock	38.1 in.
	42.1 in.	Unlock
	Unlock	106.2 days
	176 days	Unlock
	82.3°	85.8°
	Unlock	21.7°
	6.7	Unlock
	Unlock	4.3
	732 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 St. Louis with an average high temperature of 82.3°, which ranks it as warmer than most places in Michigan. In St. Louis, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Louis are June, August and July.

In St. Louis, there are 7.7 days annually when the high temperature is over 90°, which is hotter than most places in Michigan.

January has the coldest nighttime temperatures for St. Louis with an average of 14.8°. This is about average compared to other places in Michigan.

In St. Louis, there are 148.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Michigan.

In St. Louis, there are 6.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Michigan.

Humidity in St. Louis is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

August is the wettest month in St. Louis with 3.4 inches of rain, and the driest month is February with 1.5 inches. The wettest season is Autumn with 29% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 32.9 inches in St. Louis means that it is drier than most places in Michigan.

April is the rainiest month in St. Louis with 10.5 days of rain, and February is the driest month with only 7.3 rainy days. There are 110.9 rainy days annually in St. Louis, which is one of the least rainy places in Michigan. The rainiest season is Winter when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 42.1 inches in St. Louis means that it is less snowy than most places in Michigan. January is the snowiest month in St. Louis with 12.5 inches of snow, and 6 months of the year have significant snowfall.

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