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Monthly climate in Mount Vernon, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Mount Vernon features a humid subtropical climate (Cfa).Temperatures typically range between 8 °C (46 °F) and 29 °C (84 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 40 °C (105 °F).The average annual precipitation amounts to about 1381 mm (54.4 inches) and receives 120 rainy days on the 1 mm (0.04 inches) threshold annually.Mount Vernon enjoys an average of 3040 hours of sunshine throughout the year, and daylight varies from 9 hours 58 minutes to 14 hours 17 minutes per day.

Monthly average temperatures in Mount Vernon, Texas, United States §

The warmest months in Mount Vernon are June, July and August, with daily mean temperatures ranging from 27 to 29 °C (80 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (46 - 51 °F) throughout the day. On average each year, Mount Vernon experiences 162 days above 25 °C (77.0 °F) and 24 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mount Vernon, 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)		 29°C
(84°F)		 30°C
(85°F)		 32°C
(89°F)		 36°C
(97°F)		 36°C
(98°F)		 40°C
(105°F)		 39°C
(102°F)		 39°C
(102°F)		 35°C
(96°F)		 30°C
(87°F)		 27°C
(80°F)
Mean maximum 23°C
(73°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(86°F)		 33°C
(91°F)		 35°C
(96°F)		 37°C
(100°F)		 37°C
(100°F)		 36°C
(97°F)		 34°C
(94°F)		 27°C
(81°F)		 25°C
(77°F)
Average high 13°C
(56°F)		 15°C
(58°F)		 21°C
(69°F)		 23°C
(74°F)		 28°C
(82°F)		 32°C
(89°F)		 34°C
(93°F)		 34°C
(93°F)		 31°C
(89°F)		 26°C
(78°F)		 19°C
(67°F)		 16°C
(61°F)
Daily mean 8°C
(46°F)		 9°C
(49°F)		 15°C
(59°F)		 18°C
(64°F)		 23°C
(73°F)		 27°C
(80°F)		 29°C
(84°F)		 28°C
(84°F)		 26°C
(79°F)		 19°C
(67°F)		 13°C
(55°F)		 10°C
(51°F)
Average low 3°C
(38°F)		 4°C
(40°F)		 9°C
(49°F)		 12°C
(54°F)		 18°C
(65°F)		 22°C
(72°F)		 24°C
(75°F)		 24°C
(75°F)		 21°C
(69°F)		 14°C
(58°F)		 7°C
(45°F)		 6°C
(42°F)
Mean minimum -7°C
(20°F)		 -6°C
(21°F)		 -0°C
(31°F)		 2°C
(37°F)		 11°C
(52°F)		 18°C
(64°F)		 20°C
(68°F)		 20°C
(68°F)		 13°C
(57°F)		 4°C
(39°F)		 -2°C
(29°F)		 -3°C
(26°F)
Minimum -14°C
(8°F)		 -20°C
(-3°F)		 -6°C
(21°F)		 0°C
(33°F)		 8°C
(47°F)		 14°C
(57°F)		 17°C
(63°F)		 18°C
(65°F)		 10°C
(51°F)		 0°C
(32°F)		 -6°C
(21°F)		 -6°C
(22°F)

Compare climate in Mount Vernon with other places

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

Monthly average precipitation in Mount Vernon, Texas, United States §

Mount Vernon usually has the most precipitation in February, April and May, with an average of 12 rainy days and 172 mm (6.8 inches) of precipitation per month.The driest months in Mount Vernon are July, August and November. On average, 71 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mount Vernon, 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) 95 (3.8) 142 (5.6) 132 (5.2) 202 (7.9) 173 (6.8) 101 (4.0) 72 (2.8) 78 (3.1) 80 (3.2) 137 (5.4) 63 (2.5) 105 (4.2)
Average precipitation days (≥ 1 mm) 9 13 12 10 13 11 12 8 8 9 8 7

Monthly sunshine hours in Mount Vernon, Texas, United States §

The sunniest months in Mount Vernon are June, July and August, when the sun shines an average of 10 hours 52 minutes a day.Least sunny months in Mount Vernon: January, February and December receive an average of 5 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mount Vernon, 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 158 151 216 250 280 331 350 319 280 260 229 211
Mean daily daylight hours 10h 13m 11h 0m 11h 59m 13h 1m 13h 52m 14h 17m 14h 4m 13h 18m 12h 19m 11h 18m 10h 25m 9h 58m

Solar UV radiation in Mount Vernon, Texas, United States §

Mount Vernon experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure.January, February 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 Mount Vernon UV Index data.

Average daily maximum UV levels by month for Mount Vernon, 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 11 11 11 10 8 6 4