Oklahoma City enjoys favorable and mild seasons throughout the year. The average annual temperature is 60 degrees Fahrenheit / 16 degrees Celsius with an average rainfall of 33.6 inches / 85.3 centimeters and average snowfall of 9.7 inches / 24.6 centimeters per year. Because the normal storm paths that tract across most of the U.S. bypass the Oklahoma City area, prolonged periods of bad weather are almost unheard of.
During the average year, skies are clear or partly sunny 65 percent of the time. And the air is clean. In fact, Oklahoma City is the largest geographic urban area in the U.S. that is in attainment with air quality standards set by the Environment Protection Agency.
Flying conditions are generally very good with flight by visual flight rules possible on 350 days of the year – the same number of days you’ll see sun shining in Oklahoma City. Measurable precipitation averages between 1 and about 5 inches a month, with heaviest rainfall in May, June and September. Snowfall averages less than 10 inches per year and seldom remains on the ground very long. Heavy fogs are infrequent and prevailing winds are southerly, except in January and February, when northerly breezes predominate.
Average monthly rainfall and temperatures
|Month||Rainfall (in)||Rainfall (cm)||Temp (F)||Temp (C)|
|January||1.28||3.25||36 degrees||2.2 degrees|
|February||1.56||3.96||41 degrees||5.0 degrees|
|March||2.90||7.37||51 degrees||10.6 degrees|
|April||3.00||7.62||60 degrees||15.6 degrees|
|May||5.44||13.82||68 degrees||20.0 degrees|
|June||4.63||11.76||77 degrees||25.0 degrees|
|July||2.94||7.47||82 degrees||27.7 degrees|
|August||2.48||6.30||81 degrees||27.2 degrees|
|September||3.98||10.11||73 degrees||22.7 degrees|
|October||3.64||9.25||62 degrees||16.7 degrees|
|November||2.11||5.36||49 degrees||9.4 degrees|
|December||1.89||4.80||40 degrees||4.4 degrees|