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Monthly climate in Sundown, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sundown features a cold semi-arid climate (BSk).Temperatures typically range between 5 °C (42 °F) and 27 °C (81 °F) through the year, but rarely can drop to -18 °C (-1 °F) or can rise to as high as 43 °C (109 °F).The average annual precipitation amounts to about 380 mm (15.0 inches) and receives 52 rainy days on the 1 mm (0.04 inches) threshold annually.Sundown enjoys an average of 3515 hours of sunshine throughout the year, and daylight varies from 9 hours 57 minutes to 14 hours 19 minutes per day.

Monthly average temperatures in Sundown, Texas, United States §

The warmest months in Sundown are June, July and August, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (42 - 45 °F) throughout the day. On average each year, Sundown experiences 164 days above 25 °C (77.0 °F) and 59 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sundown, 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 26°C
(80°F)		 32°C
(90°F)		 33°C
(92°F)		 35°C
(95°F)		 40°C
(104°F)		 43°C
(109°F)		 42°C
(108°F)		 42°C
(108°F)		 38°C
(100°F)		 35°C
(96°F)		 30°C
(86°F)		 25°C
(78°F)
Mean maximum 23°C
(74°F)		 26°C
(80°F)		 31°C
(88°F)		 33°C
(93°F)		 37°C
(98°F)		 39°C
(103°F)		 38°C
(101°F)		 38°C
(100°F)		 36°C
(97°F)		 33°C
(91°F)		 28°C
(82°F)		 23°C
(73°F)
Average high 13°C
(56°F)		 15°C
(60°F)		 21°C
(69°F)		 24°C
(76°F)		 30°C
(85°F)		 33°C
(92°F)		 34°C
(93°F)		 33°C
(92°F)		 30°C
(86°F)		 23°C
(74°F)		 18°C
(65°F)		 15°C
(59°F)
Daily mean 5°C
(42°F)		 7°C
(45°F)		 13°C
(55°F)		 16°C
(62°F)		 22°C
(72°F)		 26°C
(79°F)		 27°C
(81°F)		 27°C
(80°F)		 23°C
(73°F)		 16°C
(61°F)		 10°C
(51°F)		 7°C
(45°F)
Average low -1°C
(30°F)		 -0°C
(32°F)		 5°C
(42°F)		 8°C
(47°F)		 14°C
(58°F)		 19°C
(66°F)		 21°C
(69°F)		 20°C
(69°F)		 16°C
(62°F)		 9°C
(49°F)		 4°C
(39°F)		 0°C
(33°F)
Mean minimum -11°C
(13°F)		 -11°C
(13°F)		 -4°C
(25°F)		 -0°C
(32°F)		 7°C
(44°F)		 15°C
(59°F)		 17°C
(64°F)		 16°C
(61°F)		 10°C
(50°F)		 -2°C
(29°F)		 -4°C
(25°F)		 -7°C
(20°F)
Minimum -14°C
(7°F)		 -18°C
(-1°F)		 -9°C
(15°F)		 -2°C
(29°F)		 2°C
(36°F)		 10°C
(51°F)		 15°C
(60°F)		 14°C
(57°F)		 4°C
(40°F)		 -6°C
(22°F)		 -8°C
(17°F)		 -8°C
(18°F)

Compare climate in Sundown with other places

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

Monthly average precipitation in Sundown, Texas, United States §

Sundown usually has the most precipitation in May, September and October, with an average of 6 rainy days and 54 mm (2.1 inches) of precipitation per month.The driest months in Sundown are January, February and December. On average, 13 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sundown, 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) 16 (0.6) 11 (0.4) 36 (1.4) 17 (0.7) 54 (2.1) 48 (1.9) 27 (1.0) 37 (1.5) 51 (2.0) 55 (2.2) 16 (0.6) 12 (0.5)
Average precipitation days (≥ 1 mm) 2 2 4 3 7 6 5 6 7 5 3 2

Monthly sunshine hours in Sundown, Texas, United States §

The sunniest months in Sundown are June, July and August, when the sun shines an average of 11 hours 37 minutes a day.Least sunny months in Sundown: January, February and November receive an average of 7 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sundown, 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 203 237 274 309 342 353 371 344 295 275 248 258
Mean daily daylight hours 10h 12m 10h 59m 11h 59m 13h 1m 13h 53m 14h 19m 14h 5m 13h 19m 12h 19m 11h 18m 10h 24m 9h 57m

Solar UV radiation in Sundown, Texas, United States §

Sundown experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Sundown UV Index data.

Average daily maximum UV levels by month for Sundown, 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) 5 7 9 11 11 12 12 12 10 8 6 4