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Monthly climate in Fort Pierre, South Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Fort Pierre features a humid continental climate (Dwa).Temperatures typically range between -7 °C (19 °F) and 25 °C (78 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 40 °C (105 °F).The average annual precipitation amounts to about 550 mm (21.7 inches) and receives 77 rainy days on the 1 mm (0.04 inches) threshold annually.Fort Pierre enjoys an average of 3192 hours of sunshine throughout the year, and daylight varies from 8 hours 53 minutes to 15 hours 27 minutes per day.

Monthly average temperatures in Fort Pierre, South Dakota, United States §

The warmest months in Fort Pierre are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (73 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -3 °C (19 - 27 °F) throughout the day. On average each year, Fort Pierre experiences 93 days above 25 °C (77.0 °F) and 145 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Fort Pierre, 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
(69°F)		 25°C
(77°F)		 30°C
(85°F)		 35°C
(96°F)		 40°C
(105°F)		 40°C
(104°F)		 37°C
(100°F)		 36°C
(97°F)		 30°C
(86°F)		 26°C
(79°F)		 20°C
(68°F)
Mean maximum 9°C
(48°F)		 13°C
(56°F)		 20°C
(69°F)		 27°C
(80°F)		 31°C
(87°F)		 34°C
(93°F)		 38°C
(101°F)		 35°C
(96°F)		 34°C
(94°F)		 27°C
(81°F)		 20°C
(69°F)		 14°C
(57°F)
Average high -1°C
(30°F)		 -2°C
(30°F)		 7°C
(45°F)		 13°C
(56°F)		 20°C
(69°F)		 29°C
(84°F)		 31°C
(89°F)		 30°C
(85°F)		 25°C
(78°F)		 14°C
(58°F)		 8°C
(47°F)		 2°C
(36°F)
Daily mean -7°C
(20°F)		 -7°C
(19°F)		 1°C
(34°F)		 7°C
(44°F)		 15°C
(59°F)		 23°C
(73°F)		 25°C
(78°F)		 23°C
(74°F)		 19°C
(66°F)		 9°C
(48°F)		 2°C
(36°F)		 -3°C
(27°F)
Average low -12°C
(11°F)		 -13°C
(10°F)		 -4°C
(25°F)		 1°C
(33°F)		 9°C
(48°F)		 16°C
(62°F)		 19°C
(67°F)		 17°C
(63°F)		 13°C
(55°F)		 3°C
(38°F)		 -3°C
(27°F)		 -8°C
(18°F)
Mean minimum -25°C
(-13°F)		 -26°C
(-15°F)		 -16°C
(4°F)		 -9°C
(17°F)		 1°C
(34°F)		 10°C
(51°F)		 14°C
(57°F)		 10°C
(51°F)		 4°C
(40°F)		 -8°C
(17°F)		 -11°C
(12°F)		 -20°C
(-4°F)
Minimum -30°C
(-22°F)		 -31°C
(-24°F)		 -25°C
(-13°F)		 -15°C
(6°F)		 -3°C
(28°F)		 6°C
(44°F)		 11°C
(52°F)		 9°C
(49°F)		 3°C
(38°F)		 -16°C
(4°F)		 -15°C
(5°F)		 -27°C
(-15°F)

Compare climate in Fort Pierre with other places

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

Monthly average precipitation in Fort Pierre, South Dakota, United States §

Fort Pierre usually has the most precipitation in May, June and July, with an average of 8 rainy days and 75 mm (3.0 inches) of precipitation per month.The driest months in Fort Pierre are January, February and November. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fort Pierre, 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) 15 (0.6) 19 (0.8) 38 (1.5) 49 (1.9) 78 (3.1) 62 (2.4) 86 (3.4) 53 (2.1) 60 (2.3) 54 (2.1) 11 (0.4) 26 (1.0)
Average precipitation days (≥ 1 mm) 4 6 6 7 10 7 9 8 6 7 3 4

Monthly sunshine hours in Fort Pierre, South Dakota, United States §

The sunniest months in Fort Pierre are June, July and August, when the sun shines an average of 11 hours 48 minutes a day.Least sunny months in Fort Pierre: 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 Fort Pierre, 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 157 206 244 275 298 366 375 343 270 237 217 197
Mean daily daylight hours 9h 16m 10h 27m 11h 57m 13h 29m 14h 48m 15h 27m 15h 6m 13h 55m 12h 27m 10h 55m 9h 34m 8h 53m

Solar UV radiation in Fort Pierre, South Dakota, United States §

Fort Pierre experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High 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 Fort Pierre UV Index data.

Average daily maximum UV levels by month for Fort Pierre, 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 5 7 9 10 10 9 8 5 3 2