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Monthly climate in Hallettsville, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hallettsville features a humid subtropical climate (Cfa).Temperatures typically range between 12 °C (54 °F) and 30 °C (86 °F) through the year, but rarely can drop to -13 °C (8 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 1075 mm (42.3 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually.Hallettsville enjoys an average of 3061 hours of sunshine throughout the year, and daylight varies from 10 hours 16 minutes to 13 hours 59 minutes per day.

Monthly average temperatures in Hallettsville, Texas, United States §

The warmest months in Hallettsville are June, July and August, with daily mean temperatures ranging from 28 to 30 °C (83 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 14 °C (54 - 58 °F) throughout the day. On average each year, Hallettsville experiences 214 days above 25 °C (77.0 °F) and 8 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hallettsville, 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 29°C
(84°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(95°F)		 37°C
(99°F)		 37°C
(100°F)		 42°C
(108°F)		 41°C
(106°F)		 38°C
(101°F)		 36°C
(98°F)		 31°C
(88°F)		 30°C
(86°F)
Mean maximum 26°C
(79°F)		 28°C
(82°F)		 30°C
(86°F)		 32°C
(90°F)		 35°C
(95°F)		 36°C
(97°F)		 39°C
(103°F)		 39°C
(103°F)		 37°C
(98°F)		 34°C
(93°F)		 30°C
(87°F)		 28°C
(83°F)
Average high 18°C
(65°F)		 19°C
(67°F)		 24°C
(76°F)		 27°C
(81°F)		 31°C
(88°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(97°F)		 33°C
(91°F)		 28°C
(83°F)		 23°C
(74°F)		 20°C
(68°F)
Daily mean 12°C
(54°F)		 14°C
(57°F)		 19°C
(66°F)		 21°C
(71°F)		 26°C
(78°F)		 28°C
(83°F)		 29°C
(85°F)		 30°C
(86°F)		 27°C
(81°F)		 22°C
(73°F)		 17°C
(63°F)		 14°C
(58°F)
Average low 7°C
(45°F)		 9°C
(48°F)		 14°C
(57°F)		 16°C
(61°F)		 21°C
(70°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(77°F)		 23°C
(73°F)		 17°C
(64°F)		 11°C
(53°F)		 9°C
(48°F)
Mean minimum -3°C
(26°F)		 -2°C
(28°F)		 3°C
(38°F)		 7°C
(44°F)		 14°C
(58°F)		 21°C
(71°F)		 22°C
(72°F)		 22°C
(72°F)		 17°C
(62°F)		 6°C
(43°F)		 2°C
(36°F)		 -0°C
(32°F)
Minimum -7°C
(19°F)		 -13°C
(8°F)		 -2°C
(28°F)		 3°C
(37°F)		 11°C
(51°F)		 18°C
(65°F)		 19°C
(66°F)		 21°C
(70°F)		 12°C
(53°F)		 2°C
(36°F)		 -2°C
(28°F)		 -3°C
(27°F)

Compare climate in Hallettsville with other places

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

Monthly average precipitation in Hallettsville, Texas, United States §

Hallettsville usually has the most precipitation in May, August and September, with an average of 12 rainy days and 120 mm (4.7 inches) of precipitation per month.The driest months in Hallettsville are January, March and November. On average, 65 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hallettsville, 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) 60 (2.4) 70 (2.7) 69 (2.7) 101 (4.0) 134 (5.3) 105 (4.1) 93 (3.6) 116 (4.6) 110 (4.3) 75 (3.0) 66 (2.6) 76 (3.0)
Average precipitation days (≥ 1 mm) 8 11 8 10 13 13 11 10 13 10 8 8

Monthly sunshine hours in Hallettsville, Texas, United States §

The sunniest months in Hallettsville are June, July and August, when the sun shines an average of 10 hours 39 minutes a day.Least sunny months in Hallettsville: January, February and December receive an average of 5 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hallettsville, 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 170 155 228 252 282 320 333 326 273 268 230 217
Mean daily daylight hours 10h 29m 11h 9m 12h 0m 12h 53m 13h 37m 13h 59m 13h 47m 13h 8m 12h 17m 11h 24m 10h 39m 10h 16m

Solar UV radiation in Hallettsville, Texas, United States §

Hallettsville 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 7. For more detailed information, check out our hourly Hallettsville UV Index data.

Average daily maximum UV levels by month for Hallettsville, 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 8 9 11 11 12 12 12 10 9 7 5