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Monthly climate in Hartford, South Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hartford features a humid continental climate (Dfa).Temperatures typically range between -7 °C (20 °F) and 24 °C (76 °F) through the year, but rarely can drop to -33 °C (-28 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 817 mm (32.2 inches) and receives 92 rainy days on the 1 mm (0.04 inches) threshold annually.Hartford enjoys an average of 3089 hours of sunshine throughout the year, and daylight varies from 8 hours 58 minutes to 15 hours 21 minutes per day.

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

The warmest months in Hartford are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -3 °C (20 - 26 °F) throughout the day. On average each year, Hartford experiences 84 days above 25 °C (77.0 °F) and 142 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hartford, 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 11°C
(52°F)		 19°C
(66°F)		 26°C
(78°F)		 29°C
(85°F)		 34°C
(93°F)		 36°C
(98°F)		 37°C
(98°F)		 35°C
(96°F)		 33°C
(91°F)		 29°C
(85°F)		 26°C
(79°F)		 16°C
(61°F)
Mean maximum 8°C
(46°F)		 12°C
(54°F)		 20°C
(68°F)		 26°C
(80°F)		 30°C
(87°F)		 32°C
(91°F)		 35°C
(95°F)		 32°C
(90°F)		 32°C
(90°F)		 27°C
(82°F)		 18°C
(66°F)		 11°C
(53°F)
Average high -2°C
(28°F)		 -2°C
(29°F)		 7°C
(45°F)		 13°C
(55°F)		 20°C
(68°F)		 28°C
(83°F)		 29°C
(85°F)		 27°C
(81°F)		 24°C
(76°F)		 14°C
(58°F)		 7°C
(45°F)		 1°C
(34°F)
Daily mean -7°C
(20°F)		 -7°C
(20°F)		 2°C
(35°F)		 7°C
(45°F)		 15°C
(59°F)		 23°C
(73°F)		 24°C
(76°F)		 22°C
(72°F)		 18°C
(66°F)		 9°C
(48°F)		 1°C
(35°F)		 -3°C
(26°F)
Average low -11°C
(12°F)		 -12°C
(11°F)		 -3°C
(27°F)		 1°C
(35°F)		 10°C
(49°F)		 17°C
(63°F)		 19°C
(66°F)		 17°C
(62°F)		 13°C
(56°F)		 4°C
(39°F)		 -4°C
(26°F)		 -8°C
(19°F)
Mean minimum -25°C
(-12°F)		 -23°C
(-10°F)		 -14°C
(7°F)		 -9°C
(16°F)		 1°C
(35°F)		 10°C
(51°F)		 13°C
(55°F)		 11°C
(51°F)		 5°C
(41°F)		 -7°C
(20°F)		 -13°C
(9°F)		 -19°C
(-3°F)
Minimum -33°C
(-28°F)		 -29°C
(-20°F)		 -27°C
(-16°F)		 -18°C
(0°F)		 0°C
(33°F)		 6°C
(43°F)		 11°C
(52°F)		 8°C
(47°F)		 3°C
(38°F)		 -12°C
(10°F)		 -16°C
(4°F)		 -24°C
(-11°F)

Compare climate in Hartford with other places

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

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

Hartford usually has the most precipitation in May, August and September, with an average of 11 rainy days and 108 mm (4.2 inches) of precipitation per month.The driest months in Hartford are January, February and November. On average, 23 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hartford, 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) 20 (0.8) 23 (0.9) 65 (2.5) 80 (3.2) 127 (5.0) 83 (3.3) 81 (3.2) 95 (3.7) 102 (4.0) 77 (3.1) 24 (1.0) 39 (1.5)
Average precipitation days (≥ 1 mm) 4 5 7 9 14 9 8 10 9 8 5 4

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

The sunniest months in Hartford are June, July and August, when the sun shines an average of 11 hours 26 minutes a day.Least sunny months in Hartford: 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 Hartford, 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 150 211 232 258 283 350 370 332 261 227 211 199
Mean daily daylight hours 9h 20m 10h 30m 11h 58m 13h 27m 14h 44m 15h 21m 15h 1m 13h 52m 12h 26m 10h 57m 9h 38m 8h 58m

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

Hartford 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 Hartford UV Index data.

Average daily maximum UV levels by month for Hartford, 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 8 9 11 10 9 8 5 3 2