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Climate in Oklahoma

Oklahoma has a humid subtropical climate, with hot summers and cool winters. Summers in Oklahoma are generally hot and humid, with average high temperatures reaching into the 90s Fahrenheit (32-38 Celsius). Winters are milder with average lows dipping to around 40 degrees Fahrenheit (4-7 Celsius). Spring is often windy, while autumn can be stormy. Precipitation is plentiful throughout the year, though it varies in amount and timing from one region of the state to another. The western part of the state tends to get more rain than other areas. Tornadoes are common during spring and early summer months.

Oklahoma, Oklahoma gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Oklahoma averages 6 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 234 sunny days per year in Oklahoma. The US average is 205 sunny days.

Oklahoma gets some kind of precipitation, on average, 75 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 93 degrees
Winter Low: the January low is 26
Rain: averages 39 inches of rain a year
Snow: averages 6 inches of snow a year


Oklahoma's annual BestPlaces Comfort Index of 7.3 (10=best) indicates it is more comfortable than most states in the United States.

5.9 / 6.6

Summer   /   Winter
May, October and September are the most pleasant months in the state of Oklahoma, while July and August are the least comfortable months.

Climate Averages
  Oklahoma, OklahomaUnited States
  38.9 in.38.1 in.
  6.0 in.27.8 in.
  75.0 days106.2 days
  234 days205 days
  1163 ft.2443 ft.


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.

August is the hottest month for Oklahoma with an average high temperature of 93.3°, which ranks it as one of the hottest states. In Oklahoma, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oklahoma are May, October and April.

Oklahoma has 67.3 days annually when the high temperature is over 90°, which is one of the hottest states in the U.S.

January has the coldest nighttime temperatures for Oklahoma with an average of 25.9°. This is warmer than most of the U.S. states.

Oklahoma has 81.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most states in the U.S.

Oklahoma averages 0.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most states in the U.S.

The humidity can be uncomfortably heavy or close in the state of Oklahoma 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 the state of Oklahoma.

May is the wettest month in Oklahoma with 5.1 inches of rain, and the driest month is January with 1.7 inches. The wettest season is Summer with 30% of yearly precipitation and 15% occurs in Spring, which is the driest season. Oklahoma's average annual rainfall of 38.9 inches indicates that it is about average compared to other states in the United States.

May is the rainiest month in Oklahoma with 8.7 days of rain, and January is the driest month with only 4.7 rainy days. Oklahoma's annual average of 75.0 days with measurable rain is less rainy than most states in the United States. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 20% chance of a rainy day.

With an average annual snowfall of 6.0 inches, Oklahoma is one of the least snowy states in the United States. January is the snowiest month in Oklahoma with 2.1 inches of snow, and 4 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Oklahoma    26 Reviews
    Why this place sucks! - 12/19/2020
    I’ve lived in this state all my life. It sucks. It is such a homophobic state. Conversion therapy here is still legal and that is absurd! It is so far right. Extremely... Read More

    Start Your Review of Oklahoma

    Oklahoma - not OK - Imagine That - 3/2/2020
    This is a terrible place to live in general, especially if one is eco-conscious. The air quality is bad as there is no emissions ordinance, and trash burning is... Read More

    Praise God for Oklahoma - 6/9/2019
    Although it's not perfect, it's a great place to raise a family. The weather can be challenging to say the least, but it's not hard to identify and appreciate a... Read More

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