DeKalb County, MO Climate

DeKalb County in Missouri has a generally humid continental climate with hot summers and cold winters. Average daytime highs in the summer months reach into the upper 80s and low 90s while overnight lows drop into the mid to upper 60s. Winters are cold, with average temperatures ranging from the high teens to low 30s during the day, and dropping to the single digits during the night. Precipitation is spread evenly throughout the year, although summers tend to be slightly drier than other months. Snowfall can vary greatly from year to year, but on average approximately 22 inches of snow fall annually.

DeKalb County, Missouri gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

DeKalb County averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 216 sunny days per year in DeKalb County. The US average is 205 sunny days.

DeKalb County gets some kind of precipitation, on average, 84 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 87 degrees
Winter Low: the January low is 16
Rain: averages 39 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

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

8.3 Summer - 5.5 Winter

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

Climate	DeKalb, Missouri	United States
	38.5 in.	38.1 in.
	17.1 in.	27.8 in.
	83.7 days	106.2 days
	216 days	205 days
	86.6°	85.8°
	16.2°	21.7°
	7.2	7
	4.2	4.3
	966 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 DeKalb County with an average high temperature of 86.6°, which ranks it as one of the coolest places in Missouri. In DeKalb County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for DeKalb County are September, June and May.

In DeKalb County, there are 23.5 days annually when the high temperature is over 90°, which is one of the coolest places in Missouri.

January has the coldest nighttime temperatures for DeKalb County with an average of 16.2°. This is colder than most places in Missouri.

In DeKalb County, there are 124.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Missouri.

In DeKalb County, there are 7.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Missouri.

The humidity can be uncomfortably heavy or close in DeKalb 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 DeKalb County.

May is the wettest month in DeKalb County with 5.3 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 36% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 38.5 inches in DeKalb County means that it is one of the driest places in Missouri.

May is the rainiest month in DeKalb County with 10.1 days of rain, and January is the driest month with only 4.1 rainy days. There are 83.7 rainy days annually in DeKalb County, which is one of the least rainy places in Missouri. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 17.1 inches in DeKalb County means that it is snowier than most places in Missouri. December is the snowiest month in DeKalb County with 4.9 inches of snow, and 5 months of the year have significant snowfall.

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