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Monthly climate in Armour, South Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Armour features a humid continental climate (Dfa).Temperatures typically range between -6 °C (21 °F) and 25 °C (77 °F) through the year, but rarely can drop to -34 °C (-29 °F) or can rise to as high as 40 °C (103 °F).The average annual precipitation amounts to about 757 mm (29.8 inches) and receives 90 rainy days on the 1 mm (0.04 inches) threshold annually.Armour enjoys an average of 3111 hours of sunshine throughout the year, and daylight varies from 9 hours 0 minutes to 15 hours 19 minutes per day.

Monthly average temperatures in Armour, South Dakota, United States §

The warmest months in Armour are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (73 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -3 °C (21 - 27 °F) throughout the day. On average each year, Armour experiences 92 days above 25 °C (77.0 °F) and 136 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Armour, South Dakota, 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 13°C
(55°F)		 21°C
(70°F)		 27°C
(81°F)		 32°C
(90°F)		 34°C
(94°F)		 40°C
(103°F)		 38°C
(101°F)		 36°C
(97°F)		 34°C
(93°F)		 30°C
(86°F)		 27°C
(81°F)		 18°C
(65°F)
Mean maximum 9°C
(49°F)		 13°C
(56°F)		 22°C
(71°F)		 28°C
(82°F)		 31°C
(88°F)		 33°C
(92°F)		 36°C
(97°F)		 33°C
(91°F)		 33°C
(92°F)		 28°C
(83°F)		 20°C
(68°F)		 13°C
(55°F)
Average high -1°C
(30°F)		 -1°C
(31°F)		 8°C
(47°F)		 14°C
(57°F)		 20°C
(69°F)		 29°C
(84°F)		 30°C
(87°F)		 28°C
(83°F)		 25°C
(77°F)		 15°C
(59°F)		 9°C
(48°F)		 2°C
(36°F)
Daily mean -6°C
(21°F)		 -6°C
(21°F)		 2°C
(37°F)		 7°C
(45°F)		 15°C
(59°F)		 23°C
(74°F)		 25°C
(77°F)		 23°C
(73°F)		 19°C
(67°F)		 9°C
(49°F)		 3°C
(37°F)		 -3°C
(27°F)
Average low -11°C
(13°F)		 -12°C
(12°F)		 -3°C
(27°F)		 1°C
(35°F)		 10°C
(50°F)		 17°C
(63°F)		 19°C
(67°F)		 17°C
(63°F)		 13°C
(56°F)		 4°C
(39°F)		 -3°C
(27°F)		 -8°C
(18°F)
Mean minimum -25°C
(-13°F)		 -24°C
(-11°F)		 -14°C
(8°F)		 -8°C
(17°F)		 1°C
(35°F)		 11°C
(52°F)		 13°C
(56°F)		 11°C
(52°F)		 5°C
(41°F)		 -7°C
(20°F)		 -11°C
(12°F)		 -20°C
(-4°F)
Minimum -34°C
(-29°F)		 -32°C
(-25°F)		 -24°C
(-11°F)		 -15°C
(6°F)		 -0°C
(32°F)		 8°C
(46°F)		 11°C
(52°F)		 10°C
(50°F)		 4°C
(40°F)		 -13°C
(8°F)		 -15°C
(4°F)		 -27°C
(-16°F)

Compare climate in Armour with other places

Compare temperature, precipitation, sunshine, UV index in Armour, South Dakota, United States with other places around the world.

Monthly average precipitation in Armour, South Dakota, United States §

Armour usually has the most precipitation in May, August and September, with an average of 10 rainy days and 99 mm (3.9 inches) of precipitation per month.The driest months in Armour are January, February and November. On average, 20 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Armour, South Dakota, 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) 19 (0.8) 21 (0.8) 66 (2.6) 63 (2.5) 123 (4.8) 68 (2.7) 83 (3.3) 92 (3.6) 84 (3.3) 77 (3.0) 21 (0.8) 40 (1.6)
Average precipitation days (≥ 1 mm) 4 5 7 8 13 9 9 10 8 8 4 5

Monthly sunshine hours in Armour, South Dakota, United States §

The sunniest months in Armour are June, July and August, when the sun shines an average of 11 hours 26 minutes a day.Least sunny months in Armour: January, February and December receive an average of 6 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Armour, South Dakota, 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 153 208 233 262 285 349 369 333 266 228 220 200
Mean daily daylight hours 9h 22m 10h 31m 11h 58m 13h 26m 14h 42m 15h 19m 14h 59m 13h 51m 12h 26m 10h 57m 9h 40m 9h 0m

Solar UV radiation in Armour, South Dakota, United States §

Armour experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Armour UV Index data.

Average daily maximum UV levels by month for Armour, South Dakota, 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) 2 5 6 8 9 11 10 9 8 5 3 2