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Monthly climate in Grandfield, Oklahoma, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Grandfield features a humid subtropical climate (Cfa).Temperatures typically range between 6 °C (43 °F) and 30 °C (86 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 44 °C (111 °F).The average annual precipitation amounts to about 742 mm (29.2 inches) and receives 72 rainy days on the 1 mm (0.04 inches) threshold annually.Grandfield enjoys an average of 3332 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 23 minutes per day.

Monthly average temperatures in Grandfield, Oklahoma, United States §

The warmest months in Grandfield are June, July and August, with daily mean temperatures ranging from 28 to 30 °C (82 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 47 °F) throughout the day. On average each year, Grandfield experiences 167 days above 25 °C (77.0 °F) and 44 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Grandfield, 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 27°C
(82°F)		 34°C
(93°F)		 35°C
(96°F)		 36°C
(98°F)		 41°C
(105°F)		 39°C
(103°F)		 44°C
(111°F)		 42°C
(108°F)		 39°C
(103°F)		 36°C
(98°F)		 31°C
(89°F)		 31°C
(87°F)
Mean maximum 24°C
(75°F)		 28°C
(82°F)		 31°C
(88°F)		 34°C
(94°F)		 36°C
(98°F)		 38°C
(100°F)		 40°C
(105°F)		 40°C
(103°F)		 37°C
(100°F)		 34°C
(94°F)		 28°C
(82°F)		 25°C
(78°F)
Average high 13°C
(55°F)		 14°C
(57°F)		 21°C
(70°F)		 24°C
(76°F)		 29°C
(84°F)		 33°C
(92°F)		 36°C
(97°F)		 35°C
(95°F)		 31°C
(88°F)		 25°C
(77°F)		 19°C
(66°F)		 15°C
(59°F)
Daily mean 6°C
(43°F)		 7°C
(44°F)		 14°C
(57°F)		 17°C
(63°F)		 23°C
(73°F)		 28°C
(82°F)		 30°C
(86°F)		 29°C
(85°F)		 25°C
(78°F)		 18°C
(65°F)		 12°C
(53°F)		 8°C
(47°F)
Average low 0°C
(32°F)		 1°C
(33°F)		 8°C
(46°F)		 11°C
(52°F)		 17°C
(63°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(74°F)		 20°C
(68°F)		 12°C
(54°F)		 6°C
(42°F)		 2°C
(37°F)
Mean minimum -9°C
(15°F)		 -11°C
(12°F)		 -2°C
(28°F)		 1°C
(34°F)		 8°C
(47°F)		 18°C
(64°F)		 20°C
(69°F)		 19°C
(66°F)		 13°C
(55°F)		 1°C
(35°F)		 -3°C
(28°F)		 -6°C
(21°F)
Minimum -15°C
(6°F)		 -22°C
(-7°F)		 -9°C
(16°F)		 -3°C
(27°F)		 4°C
(40°F)		 15°C
(59°F)		 18°C
(65°F)		 17°C
(63°F)		 8°C
(47°F)		 -1°C
(30°F)		 -8°C
(18°F)		 -7°C
(19°F)

Compare climate in Grandfield with other places

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

Monthly average precipitation in Grandfield, Oklahoma, United States §

Grandfield usually has the most precipitation in April, May and September, with an average of 8 rainy days and 109 mm (4.3 inches) of precipitation per month.The driest months in Grandfield are July, November and December. On average, 30 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grandfield, 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) 38 (1.5) 38 (1.5) 77 (3.0) 101 (4.0) 132 (5.2) 48 (1.9) 26 (1.0) 47 (1.8) 94 (3.7) 77 (3.0) 27 (1.1) 36 (1.4)
Average precipitation days (≥ 1 mm) 4 6 7 6 11 6 5 6 7 6 4 4

Monthly sunshine hours in Grandfield, Oklahoma, United States §

The sunniest months in Grandfield are June, July and August, when the sun shines an average of 11 hours 25 minutes a day.Least sunny months in Grandfield: January, February and November receive an average of 7 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grandfield, 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 190 218 259 277 306 347 368 334 285 268 237 237
Mean daily daylight hours 10h 8m 10h 57m 11h 59m 13h 3m 13h 57m 14h 23m 14h 8m 13h 21m 12h 20m 11h 16m 10h 21m 9h 53m

Solar UV radiation in Grandfield, Oklahoma, United States §

Grandfield experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 12, 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 Grandfield UV Index data.

Average daily maximum UV levels by month for Grandfield, 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 12 11 10 7 5 4