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Monthly climate in Chelsea, Oklahoma, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Chelsea features a humid subtropical climate (Cfa).Temperatures typically range between 3 °C (38 °F) and 28 °C (82 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1254 mm (49.4 inches) and receives 108 rainy days on the 1 mm (0.04 inches) threshold annually.Chelsea enjoys an average of 3109 hours of sunshine throughout the year, and daylight varies from 9 hours 42 minutes to 14 hours 35 minutes per day.

Monthly average temperatures in Chelsea, Oklahoma, United States §

The warmest months in Chelsea are June, July and August, with daily mean temperatures ranging from 26 to 28 °C (79 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 7 °C (38 - 44 °F) throughout the day. On average each year, Chelsea experiences 133 days above 25 °C (77.0 °F) and 51 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chelsea, 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 23°C
(74°F)		 29°C
(84°F)		 31°C
(88°F)		 32°C
(90°F)		 33°C
(92°F)		 37°C
(98°F)		 39°C
(103°F)		 37°C
(99°F)		 35°C
(96°F)		 33°C
(91°F)		 27°C
(80°F)		 24°C
(76°F)
Mean maximum 19°C
(66°F)		 23°C
(74°F)		 26°C
(80°F)		 29°C
(84°F)		 32°C
(89°F)		 34°C
(94°F)		 37°C
(99°F)		 36°C
(98°F)		 35°C
(95°F)		 32°C
(90°F)		 24°C
(76°F)		 22°C
(71°F)
Average high 9°C
(48°F)		 10°C
(51°F)		 17°C
(63°F)		 21°C
(70°F)		 26°C
(78°F)		 31°C
(88°F)		 33°C
(91°F)		 32°C
(89°F)		 30°C
(86°F)		 22°C
(72°F)		 16°C
(61°F)		 12°C
(54°F)
Daily mean 3°C
(38°F)		 5°C
(41°F)		 12°C
(53°F)		 15°C
(59°F)		 21°C
(69°F)		 26°C
(79°F)		 28°C
(82°F)		 27°C
(80°F)		 24°C
(76°F)		 16°C
(62°F)		 10°C
(50°F)		 7°C
(44°F)
Average low -1°C
(30°F)		 -0°C
(32°F)		 6°C
(44°F)		 10°C
(50°F)		 16°C
(61°F)		 21°C
(70°F)		 23°C
(74°F)		 22°C
(72°F)		 19°C
(67°F)		 12°C
(53°F)		 5°C
(40°F)		 2°C
(36°F)
Mean minimum -10°C
(13°F)		 -12°C
(11°F)		 -4°C
(25°F)		 0°C
(33°F)		 8°C
(46°F)		 17°C
(62°F)		 20°C
(67°F)		 18°C
(64°F)		 11°C
(52°F)		 2°C
(35°F)		 -4°C
(24°F)		 -6°C
(22°F)
Minimum -16°C
(4°F)		 -25°C
(-13°F)		 -13°C
(9°F)		 -4°C
(25°F)		 5°C
(42°F)		 14°C
(57°F)		 17°C
(63°F)		 16°C
(62°F)		 8°C
(47°F)		 -1°C
(30°F)		 -10°C
(15°F)		 -9°C
(15°F)

Compare climate in Chelsea with other places

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

Monthly average precipitation in Chelsea, Oklahoma, United States §

Chelsea usually has the most precipitation in April, May and October, with an average of 12 rainy days and 161 mm (6.3 inches) of precipitation per month.The driest months in Chelsea are February, November and December. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chelsea, 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) 76 (3.0) 68 (2.7) 122 (4.8) 139 (5.5) 204 (8.0) 103 (4.1) 97 (3.8) 113 (4.4) 91 (3.6) 139 (5.5) 53 (2.1) 50 (2.0)
Average precipitation days (≥ 1 mm) 6 8 10 11 14 8 9 12 7 11 6 6

Monthly sunshine hours in Chelsea, Oklahoma, United States §

The sunniest months in Chelsea are June, July and August, when the sun shines an average of 11 hours 0 minutes a day.Least sunny months in Chelsea: January, February and November receive an average of 6 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chelsea, 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 161 180 227 251 283 336 356 320 289 251 225 225
Mean daily daylight hours 9h 58m 10h 51m 11h 59m 13h 8m 14h 7m 14h 35m 14h 19m 13h 28m 12h 21m 11h 12m 10h 12m 9h 42m

Solar UV radiation in Chelsea, Oklahoma, United States §

Chelsea 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 Chelsea UV Index data.

Average daily maximum UV levels by month for Chelsea, 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) 3 6 7 10 10 11 11 10 9 7 5 3