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Monthly climate in Okmulgee, Oklahoma, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Okmulgee features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (41 °F) and 28 °C (83 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 43 °C (109 °F).The average annual precipitation amounts to about 1221 mm (48.1 inches) and receives 101 rainy days on the 1 mm (0.04 inches) threshold annually.Okmulgee enjoys an average of 3125 hours of sunshine throughout the year, and daylight varies from 9 hours 47 minutes to 14 hours 30 minutes per day.

Monthly average temperatures in Okmulgee, Oklahoma, United States §

The warmest months in Okmulgee are June, July and August, with daily mean temperatures ranging from 26 to 28 °C (80 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 8 °C (41 - 46 °F) throughout the day. On average each year, Okmulgee experiences 144 days above 25 °C (77.0 °F) and 43 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Okmulgee, Oklahoma, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 25°C
(77°F)		 30°C
(86°F)		 34°C
(94°F)		 34°C
(94°F)		 35°C
(96°F)		 37°C
(98°F)		 43°C
(109°F)		 38°C
(101°F)		 37°C
(99°F)		 33°C
(92°F)		 29°C
(84°F)		 26°C
(79°F)
Mean maximum 21°C
(70°F)		 25°C
(77°F)		 28°C
(82°F)		 29°C
(85°F)		 32°C
(90°F)		 35°C
(95°F)		 38°C
(101°F)		 37°C
(99°F)		 36°C
(96°F)		 33°C
(91°F)		 25°C
(78°F)		 23°C
(74°F)
Average high 10°C
(51°F)		 12°C
(53°F)		 19°C
(66°F)		 22°C
(71°F)		 26°C
(80°F)		 31°C
(89°F)		 33°C
(92°F)		 32°C
(91°F)		 30°C
(87°F)		 23°C
(74°F)		 17°C
(63°F)		 13°C
(56°F)
Daily mean 5°C
(41°F)		 6°C
(43°F)		 13°C
(55°F)		 16°C
(60°F)		 21°C
(71°F)		 26°C
(80°F)		 28°C
(83°F)		 27°C
(81°F)		 25°C
(77°F)		 17°C
(63°F)		 11°C
(52°F)		 8°C
(46°F)
Average low -0°C
(32°F)		 1°C
(34°F)		 7°C
(45°F)		 10°C
(51°F)		 17°C
(62°F)		 21°C
(71°F)		 23°C
(74°F)		 23°C
(73°F)		 20°C
(68°F)		 12°C
(54°F)		 5°C
(42°F)		 3°C
(38°F)
Mean minimum -10°C
(15°F)		 -11°C
(12°F)		 -3°C
(26°F)		 1°C
(34°F)		 8°C
(47°F)		 17°C
(62°F)		 20°C
(68°F)		 19°C
(66°F)		 12°C
(54°F)		 2°C
(36°F)		 -3°C
(26°F)		 -5°C
(24°F)
Minimum -15°C
(6°F)		 -25°C
(-12°F)		 -13°C
(9°F)		 -3°C
(27°F)		 6°C
(43°F)		 13°C
(55°F)		 18°C
(65°F)		 17°C
(63°F)		 9°C
(48°F)		 -1°C
(31°F)		 -9°C
(17°F)		 -7°C
(19°F)

Compare climate in Okmulgee with other places

Compare temperature, precipitation, sunshine, UV index in Okmulgee, Oklahoma, United States with other places around the world.

Monthly average precipitation in Okmulgee, Oklahoma, United States §

Okmulgee usually has the most precipitation in April, May and October, with an average of 11 rainy days and 161 mm (6.3 inches) of precipitation per month.The driest months in Okmulgee are February, November and December. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Okmulgee, Oklahoma, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 79 (3.1) 78 (3.1) 105 (4.1) 162 (6.4) 187 (7.3) 84 (3.3) 79 (3.1) 97 (3.8) 101 (4.0) 135 (5.3) 55 (2.2) 59 (2.3)
Average precipitation days (≥ 1 mm) 6 9 10 10 12 7 7 10 7 11 6 6

Monthly sunshine hours in Okmulgee, Oklahoma, United States §

The sunniest months in Okmulgee are June, July and August, when the sun shines an average of 11 hours 3 minutes a day.Least sunny months in Okmulgee: January, February and December receive an average of 6 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Okmulgee, Oklahoma, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 170 178 230 250 284 335 357 324 285 253 228 226
Mean daily daylight hours 10h 3m 10h 54m 11h 59m 13h 6m 14h 2m 14h 30m 14h 15m 13h 25m 12h 21m 11h 14m 10h 16m 9h 47m

Solar UV radiation in Okmulgee, Oklahoma, United States §

Okmulgee experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Okmulgee UV Index data.

Average daily maximum UV levels by month for Okmulgee, Oklahoma, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 6 7 10 10 11 11 10 9 7 5 3