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Monthly climate in Denison, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Denison features a humid subtropical climate (Cfa).Temperatures typically range between 7 °C (45 °F) and 29 °C (84 °F) through the year, but rarely can drop to -18 °C (1 °F) or can rise to as high as 42 °C (107 °F).The average annual precipitation amounts to about 1230 mm (48.4 inches) and receives 99 rainy days on the 1 mm (0.04 inches) threshold annually.Denison enjoys an average of 3141 hours of sunshine throughout the year, and daylight varies from 9 hours 55 minutes to 14 hours 21 minutes per day.

Monthly average temperatures in Denison, Texas, United States §

The warmest months in Denison are June, July and August, with daily mean temperatures ranging from 27 to 29 °C (81 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 10 °C (45 - 50 °F) throughout the day. On average each year, Denison experiences 152 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 Denison, 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
(77°F)		 29°C
(84°F)		 30°C
(87°F)		 33°C
(92°F)		 34°C
(93°F)		 37°C
(98°F)		 42°C
(107°F)		 39°C
(102°F)		 37°C
(98°F)		 33°C
(92°F)		 30°C
(86°F)		 25°C
(78°F)
Mean maximum 22°C
(72°F)		 25°C
(77°F)		 27°C
(82°F)		 29°C
(85°F)		 32°C
(90°F)		 35°C
(95°F)		 38°C
(100°F)		 37°C
(98°F)		 35°C
(95°F)		 32°C
(90°F)		 26°C
(79°F)		 23°C
(74°F)
Average high 12°C
(54°F)		 14°C
(57°F)		 20°C
(68°F)		 23°C
(73°F)		 27°C
(81°F)		 32°C
(89°F)		 34°C
(93°F)		 33°C
(92°F)		 30°C
(87°F)		 24°C
(76°F)		 18°C
(65°F)		 15°C
(59°F)
Daily mean 7°C
(45°F)		 8°C
(47°F)		 14°C
(58°F)		 17°C
(63°F)		 23°C
(73°F)		 27°C
(81°F)		 29°C
(84°F)		 28°C
(83°F)		 25°C
(78°F)		 19°C
(66°F)		 12°C
(55°F)		 10°C
(50°F)
Average low 2°C
(37°F)		 3°C
(38°F)		 9°C
(49°F)		 12°C
(54°F)		 18°C
(65°F)		 22°C
(72°F)		 24°C
(76°F)		 24°C
(75°F)		 21°C
(70°F)		 14°C
(57°F)		 7°C
(45°F)		 5°C
(42°F)
Mean minimum -7°C
(19°F)		 -6°C
(21°F)		 -0°C
(32°F)		 3°C
(38°F)		 11°C
(52°F)		 19°C
(66°F)		 21°C
(69°F)		 20°C
(69°F)		 14°C
(58°F)		 4°C
(39°F)		 -1°C
(30°F)		 -2°C
(28°F)
Minimum -13°C
(9°F)		 -18°C
(1°F)		 -7°C
(19°F)		 -1°C
(31°F)		 9°C
(48°F)		 16°C
(61°F)		 18°C
(66°F)		 19°C
(67°F)		 11°C
(52°F)		 1°C
(34°F)		 -6°C
(22°F)		 -6°C
(22°F)

Compare climate in Denison with other places

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

Monthly average precipitation in Denison, Texas, United States §

Denison usually has the most precipitation in April, May and October, with an average of 10 rainy days and 151 mm (5.9 inches) of precipitation per month.The driest months in Denison are January, July and November. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Denison, 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) 59 (2.3) 95 (3.7) 129 (5.1) 130 (5.1) 158 (6.2) 109 (4.3) 53 (2.1) 102 (4.0) 104 (4.1) 165 (6.5) 58 (2.3) 69 (2.7)
Average precipitation days (≥ 1 mm) 7 9 10 9 13 8 7 8 6 9 6 7

Monthly sunshine hours in Denison, Texas, United States §

The sunniest months in Denison are June, July and August, when the sun shines an average of 11 hours 10 minutes a day.Least sunny months in Denison: January, February and December receive an average of 6 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Denison, 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 169 171 231 252 283 341 355 331 283 259 237 223
Mean daily daylight hours 10h 10m 10h 58m 11h 59m 13h 2m 13h 55m 14h 21m 14h 7m 13h 20m 12h 20m 11h 17m 10h 23m 9h 55m

Solar UV radiation in Denison, Texas, United States §

Denison 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 Denison UV Index data.

Average daily maximum UV levels by month for Denison, 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