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Monthly climate in Sulphur, Oklahoma, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sulphur features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (42 °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 42 °C (109 °F).The average annual precipitation amounts to about 1016 mm (40.0 inches) and receives 96 rainy days on the 1 mm (0.04 inches) threshold annually.Sulphur enjoys an average of 3192 hours of sunshine throughout the year, and daylight varies from 9 hours 52 minutes to 14 hours 24 minutes per day.

Monthly average temperatures in Sulphur, Oklahoma, United States §

The warmest months in Sulphur are June, July and August, with daily mean temperatures ranging from 26 to 28 °C (79 - 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 (42 - 47 °F) throughout the day. On average each year, Sulphur experiences 146 days above 25 °C (77.0 °F) and 40 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sulphur, 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)		 29°C
(85°F)		 32°C
(89°F)		 33°C
(91°F)		 36°C
(97°F)		 37°C
(99°F)		 42°C
(109°F)		 39°C
(103°F)		 37°C
(98°F)		 33°C
(91°F)		 29°C
(84°F)		 26°C
(79°F)
Mean maximum 21°C
(70°F)		 25°C
(77°F)		 27°C
(82°F)		 29°C
(85°F)		 33°C
(91°F)		 35°C
(95°F)		 38°C
(100°F)		 37°C
(99°F)		 35°C
(95°F)		 32°C
(89°F)		 26°C
(78°F)		 23°C
(73°F)
Average high 11°C
(52°F)		 13°C
(55°F)		 19°C
(67°F)		 22°C
(72°F)		 27°C
(80°F)		 31°C
(88°F)		 33°C
(93°F)		 33°C
(92°F)		 30°C
(86°F)		 23°C
(75°F)		 17°C
(64°F)		 14°C
(57°F)
Daily mean 5°C
(42°F)		 6°C
(44°F)		 13°C
(56°F)		 16°C
(61°F)		 22°C
(71°F)		 26°C
(79°F)		 28°C
(83°F)		 28°C
(82°F)		 24°C
(76°F)		 18°C
(64°F)		 11°C
(52°F)		 8°C
(47°F)
Average low 0°C
(33°F)		 1°C
(35°F)		 8°C
(46°F)		 11°C
(51°F)		 17°C
(62°F)		 21°C
(70°F)		 23°C
(74°F)		 23°C
(73°F)		 19°C
(67°F)		 12°C
(54°F)		 6°C
(42°F)		 3°C
(38°F)
Mean minimum -9°C
(16°F)		 -10°C
(14°F)		 -2°C
(28°F)		 1°C
(33°F)		 8°C
(47°F)		 17°C
(62°F)		 20°C
(67°F)		 19°C
(66°F)		 12°C
(54°F)		 1°C
(35°F)		 -3°C
(27°F)		 -6°C
(22°F)
Minimum -15°C
(5°F)		 -25°C
(-12°F)		 -10°C
(15°F)		 -3°C
(28°F)		 7°C
(44°F)		 14°C
(57°F)		 18°C
(64°F)		 18°C
(64°F)		 8°C
(47°F)		 -1°C
(31°F)		 -8°C
(19°F)		 -8°C
(17°F)

Compare climate in Sulphur with other places

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

Monthly average precipitation in Sulphur, Oklahoma, United States §

Sulphur usually has the most precipitation in April, May and October, with an average of 10 rainy days and 122 mm (4.8 inches) of precipitation per month.The driest months in Sulphur are January, November and December. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sulphur, 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) 54 (2.1) 80 (3.2) 93 (3.7) 111 (4.4) 140 (5.5) 96 (3.8) 54 (2.1) 73 (2.9) 103 (4.1) 115 (4.5) 42 (1.7) 54 (2.1)
Average precipitation days (≥ 1 mm) 6 8 9 10 13 8 8 9 7 8 5 5

Monthly sunshine hours in Sulphur, Oklahoma, United States §

The sunniest months in Sulphur are June, July and August, when the sun shines an average of 11 hours 14 minutes a day.Least sunny months in Sulphur: January, February and December receive an average of 6 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sulphur, 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 174 184 246 257 292 340 362 330 281 261 231 228
Mean daily daylight hours 10h 7m 10h 56m 11h 59m 13h 4m 13h 58m 14h 24m 14h 10m 13h 22m 12h 20m 11h 16m 10h 20m 9h 52m

Solar UV radiation in Sulphur, Oklahoma, United States §

Sulphur experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the 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 Sulphur UV Index data.

Average daily maximum UV levels by month for Sulphur, 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 8 10 11 11 11 11 10 8 5 4