Pettis County, MO Climate

Pettis County, MO has a humid continental climate with hot summers and cold winters. Temperatures range from an average low of 23°F in January to an average high of 87°F in July. The county receives an average of 40 inches of rain and 18 inches of snow per year, making it one of the wettest counties in Missouri. The area is prone to severe weather including thunderstorms and tornadoes during late spring and summer months, so residents should always be prepared for sudden changes in the weather.

Pettis County, Missouri gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Pettis County averages 14 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 198 sunny days per year in Pettis County. The US average is 205 sunny days.

Pettis County gets some kind of precipitation, on average, 97 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 20
Rain: averages 43 inches of rain a year
Snow: averages 14 inches of snow a year

Bestplaces Comfort Index

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

7.7 Summer - 5.7 Winter

September, May and June are the most pleasant months in Pettis County, while January and December are the least comfortable months.

Climate	Pettis, Missouri	United States
	42.8 in.	38.1 in.
	13.7 in.	27.8 in.
	97.2 days	106.2 days
	198 days	205 days
	88.1°	85.8°
	19.9°	21.7°
	7.2	7
	4.3	4.3
	827 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 Pettis County with an average high temperature of 88.1°, which ranks it as about average compared to other places in Missouri. In Pettis County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pettis County are September, May and June.

In Pettis County, there are 31.1 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 Pettis County with an average of 19.9°. This is about average compared to other places in Missouri.

In Pettis County, there are 106.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Missouri.

In Pettis County, there are 3.4 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 Pettis County 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 Pettis County.

June is the wettest month in Pettis County with 5.2 inches of rain, and the driest month is January with 1.6 inches. The wettest season is Autumn with 32% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 42.8 inches in Pettis County means that it is about average compared to other places in Missouri.

May is the rainiest month in Pettis County with 11.3 days of rain, and January is the driest month with only 5.8 rainy days. There are 97.2 rainy days annually in Pettis County, which is about average compared to other places in Missouri. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 13.7 inches in Pettis County means that it is about average compared to other places in Missouri. January is the snowiest month in Pettis County with 4.2 inches of snow, and 4 months of the year have significant snowfall.

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