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Monthly climate in McLean, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification McLean features a cold semi-arid climate (BSk).Temperatures typically range between 3 °C (38 °F) and 27 °C (81 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 509 mm (20.0 inches) and receives 67 rainy days on the 1 mm (0.04 inches) threshold annually.McLean enjoys an average of 3445 hours of sunshine throughout the year, and daylight varies from 9 hours 48 minutes to 14 hours 28 minutes per day.

Monthly average temperatures in McLean, Texas, United States §

The warmest months in McLean are June, July and August, with daily mean temperatures ranging from 25 to 27 °C (77 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 6 °C (38 - 42 °F) throughout the day. On average each year, McLean experiences 142 days above 25 °C (77.0 °F) and 70 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in McLean, Texas, 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
(78°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(95°F)		 37°C
(99°F)		 38°C
(101°F)		 42°C
(108°F)		 40°C
(105°F)		 37°C
(100°F)		 35°C
(96°F)		 29°C
(85°F)		 26°C
(80°F)
Mean maximum 21°C
(71°F)		 26°C
(78°F)		 30°C
(85°F)		 32°C
(90°F)		 35°C
(95°F)		 36°C
(97°F)		 38°C
(101°F)		 38°C
(100°F)		 36°C
(96°F)		 32°C
(91°F)		 27°C
(81°F)		 23°C
(73°F)
Average high 11°C
(52°F)		 11°C
(53°F)		 18°C
(65°F)		 22°C
(72°F)		 27°C
(80°F)		 31°C
(89°F)		 33°C
(92°F)		 33°C
(91°F)		 29°C
(85°F)		 22°C
(72°F)		 17°C
(62°F)		 13°C
(55°F)
Daily mean 3°C
(38°F)		 4°C
(39°F)		 11°C
(51°F)		 14°C
(58°F)		 20°C
(68°F)		 25°C
(77°F)		 27°C
(81°F)		 26°C
(79°F)		 23°C
(73°F)		 15°C
(59°F)		 9°C
(49°F)		 6°C
(42°F)
Average low -2°C
(28°F)		 -3°C
(28°F)		 4°C
(39°F)		 7°C
(45°F)		 13°C
(56°F)		 19°C
(66°F)		 21°C
(70°F)		 20°C
(68°F)		 17°C
(62°F)		 9°C
(48°F)		 3°C
(38°F)		 -0°C
(32°F)
Mean minimum -12°C
(11°F)		 -12°C
(10°F)		 -5°C
(24°F)		 -2°C
(29°F)		 5°C
(42°F)		 15°C
(59°F)		 17°C
(63°F)		 16°C
(61°F)		 10°C
(50°F)		 -2°C
(29°F)		 -5°C
(24°F)		 -8°C
(18°F)
Minimum -16°C
(4°F)		 -22°C
(-7°F)		 -11°C
(12°F)		 -6°C
(22°F)		 2°C
(36°F)		 11°C
(52°F)		 16°C
(61°F)		 14°C
(58°F)		 4°C
(40°F)		 -5°C
(22°F)		 -11°C
(12°F)		 -10°C
(14°F)

Compare climate in McLean with other places

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

Monthly average precipitation in McLean, Texas, United States §

McLean usually has the most precipitation in May, June and October, with an average of 7 rainy days and 70 mm (2.8 inches) of precipitation per month.The driest months in McLean are February, November and December. On average, 17 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in McLean, Texas, 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) 23 (0.9) 15 (0.6) 59 (2.3) 36 (1.4) 82 (3.2) 59 (2.3) 36 (1.4) 43 (1.7) 50 (2.0) 69 (2.7) 14 (0.5) 23 (0.9)
Average precipitation days (≥ 1 mm) 3 3 7 5 11 6 7 8 6 6 3 2

Monthly sunshine hours in McLean, Texas, United States §

The sunniest months in McLean are June, July and August, when the sun shines an average of 11 hours 35 minutes a day.Least sunny months in McLean: January, February and December receive an average of 7 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in McLean, Texas, 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 199 233 269 292 321 355 371 339 294 271 249 248
Mean daily daylight hours 10h 4m 10h 54m 11h 59m 13h 6m 14h 1m 14h 28m 14h 13m 13h 24m 12h 20m 11h 14m 10h 17m 9h 48m

Solar UV radiation in McLean, Texas, United States §

McLean experiences the highest level of ultraviolet (UV) radiation in June, 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 McLean UV Index data.

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