Dewey County, OK Climate

Dewey, OK County has a humid subtropical climate with hot summers and mild winters. Precipitation is abundant throughout the year, with an average of around 42 inches annually. The summers are generally hot and humid, with temperatures reaching as high as 95°F in July and August. Winters are mild with temperatures rarely dipping below 40°F during the day. Snowfall is rare but possible, usually occurring in December or January. Dewey also experiences severe thunderstorms during the summer months, especially May through August, which can bring along strong winds and heavy rain.

Dewey County, Oklahoma gets 29 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Dewey County averages 10 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 236 sunny days per year in Dewey County. The US average is 205 sunny days.

Dewey County gets some kind of precipitation, on average, 63 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 94 degrees
Winter Low: the January low is 22
Rain: averages 29 inches of rain a year
Snow: averages 10 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Dewey County is 7.5 (10=best), which means it is one of the most pleasant places in Oklahoma.

7 Summer - 6.5 Winter

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

Climate	Dewey, Oklahoma	United States
	Unlock	38.1 in.
	9.5 in.	Unlock
	Unlock	106.2 days
	236 days	Unlock
	94.1°	85.8°
	Unlock	21.7°
	7.5	Unlock
	Unlock	4.3
	1873 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 Dewey County with an average high temperature of 94.1°, which ranks it as warmer than most places in Oklahoma. In Dewey County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dewey County are May, October and September.

In Dewey County, there are 71.6 days annually when the high temperature is over 90°, which is hotter than most places in Oklahoma.

January has the coldest nighttime temperatures for Dewey County with an average of 22.4°. This is one of the coldest places in Oklahoma.

In Dewey County, there are 106.3 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Oklahoma.

In Dewey County, there are 1.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Oklahoma.

The humidity is usually acceptable in Dewey County but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in Dewey County.

May is the wettest month in Dewey County with 4.2 inches of rain, and the driest month is January with 1.0 inches. The wettest season is Summer with 32% of yearly precipitation and 12% occurs in Spring, which is the driest season. The annual rainfall of 28.5 inches in Dewey County means that it is one of the driest places in Oklahoma.

June is the rainiest month in Dewey County with 7.8 days of rain, and January is the driest month with only 3.4 rainy days. There are 63.4 rainy days annually in Dewey County, which is one of the least rainy places in Oklahoma. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 9.5 inches in Dewey County means that it is snowier than most places in Oklahoma. December is the snowiest month in Dewey County with 2.7 inches of snow, and 5 months of the year have significant snowfall.

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