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Monthly climate in Union, Mississippi, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Union features a humid subtropical climate (Cfa).Temperatures typically range between 9 °C (48 °F) and 27 °C (81 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 1433 mm (56.4 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually.Union enjoys an average of 3112 hours of sunshine throughout the year, and daylight varies from 10 hours 2 minutes to 14 hours 14 minutes per day.

Monthly average temperatures in Union, Mississippi, United States §

The warmest months in Union 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 9 to 12 °C (48 - 54 °F) throughout the day. On average each year, Union experiences 171 days above 25 °C (77.0 °F) and 20 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Union, Mississippi, 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 27°C
(81°F)		 28°C
(83°F)		 31°C
(89°F)		 31°C
(89°F)		 35°C
(96°F)		 36°C
(97°F)		 37°C
(99°F)		 37°C
(99°F)		 38°C
(101°F)		 37°C
(99°F)		 28°C
(83°F)		 27°C
(80°F)
Mean maximum 25°C
(77°F)		 27°C
(80°F)		 29°C
(85°F)		 30°C
(86°F)		 33°C
(93°F)		 34°C
(94°F)		 36°C
(97°F)		 36°C
(97°F)		 35°C
(96°F)		 33°C
(92°F)		 27°C
(80°F)		 25°C
(77°F)
Average high 14°C
(58°F)		 18°C
(64°F)		 22°C
(71°F)		 24°C
(76°F)		 29°C
(84°F)		 31°C
(88°F)		 32°C
(91°F)		 32°C
(90°F)		 31°C
(88°F)		 26°C
(80°F)		 19°C
(67°F)		 16°C
(62°F)
Daily mean 9°C
(48°F)		 12°C
(54°F)		 16°C
(60°F)		 18°C
(65°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(81°F)		 27°C
(81°F)		 25°C
(78°F)		 20°C
(69°F)		 13°C
(55°F)		 11°C
(52°F)
Average low 4°C
(40°F)		 7°C
(44°F)		 10°C
(51°F)		 12°C
(54°F)		 18°C
(64°F)		 22°C
(71°F)		 23°C
(74°F)		 23°C
(73°F)		 21°C
(69°F)		 15°C
(60°F)		 7°C
(45°F)		 6°C
(43°F)
Mean minimum -6°C
(22°F)		 -3°C
(26°F)		 -0°C
(32°F)		 3°C
(38°F)		 11°C
(51°F)		 17°C
(63°F)		 20°C
(69°F)		 19°C
(66°F)		 15°C
(59°F)		 5°C
(42°F)		 -1°C
(30°F)		 -2°C
(28°F)
Minimum -13°C
(9°F)		 -11°C
(13°F)		 -4°C
(26°F)		 1°C
(35°F)		 8°C
(46°F)		 14°C
(57°F)		 18°C
(66°F)		 18°C
(64°F)		 11°C
(53°F)		 1°C
(35°F)		 -6°C
(22°F)		 -4°C
(25°F)

Compare climate in Union with other places

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

Monthly average precipitation in Union, Mississippi, United States §

Union usually has the most precipitation in February, April and June, with an average of 12 rainy days and 151 mm (6.0 inches) of precipitation per month.The driest months in Union are September, October and November. On average, 88 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Union, Mississippi, 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) 105 (4.1) 156 (6.1) 116 (4.6) 136 (5.4) 122 (4.8) 163 (6.4) 121 (4.8) 127 (5.0) 95 (3.8) 100 (3.9) 70 (2.7) 121 (4.8)
Average precipitation days (≥ 1 mm) 8 13 12 9 11 14 17 14 9 8 8 12

Monthly sunshine hours in Union, Mississippi, United States §

The sunniest months in Union are May, July and August, when the sun shines an average of 10 hours 12 minutes a day.Least sunny months in Union: January, February and December receive an average of 5 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Union, Mississippi, 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 163 176 233 279 312 303 328 308 287 270 250 198
Mean daily daylight hours 10h 16m 11h 1m 12h 0m 12h 59m 13h 49m 14h 14m 14h 0m 13h 16m 12h 19m 11h 19m 10h 28m 10h 2m

Solar UV radiation in Union, Mississippi, United States §

Union experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 11 - 11, 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 Union UV Index data.

Average daily maximum UV levels by month for Union, Mississippi, 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 7 8 11 11 11 11 11 10 8 6 4