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Monthly climate in Donnellson, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Donnellson features a humid continental climate (Dfa).Temperatures typically range between -4 °C (26 °F) and 26 °C (78 °F) through the year, but rarely can drop to -30 °C (-21 °F) or can rise to as high as 37 °C (100 °F).The average annual precipitation amounts to about 1079 mm (42.5 inches) and receives 112 rainy days on the 1 mm (0.04 inches) threshold annually.Donnellson enjoys an average of 2975 hours of sunshine throughout the year, and daylight varies from 9 hours 17 minutes to 15 hours 1 minutes per day.

Monthly average temperatures in Donnellson, Iowa, United States §

The warmest months in Donnellson are June, July and August, with daily mean temperatures ranging from 24 to 26 °C (75 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to 1 °C (26 - 34 °F) throughout the day. On average each year, Donnellson experiences 107 days above 25 °C (77.0 °F) and 103 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Donnellson, Iowa, 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 14°C
(58°F)		 23°C
(73°F)		 23°C
(73°F)		 30°C
(86°F)		 36°C
(97°F)		 37°C
(100°F)		 37°C
(100°F)		 36°C
(98°F)		 35°C
(95°F)		 32°C
(90°F)		 24°C
(76°F)		 22°C
(73°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 20°C
(69°F)		 28°C
(82°F)		 32°C
(91°F)		 35°C
(95°F)		 36°C
(96°F)		 34°C
(94°F)		 33°C
(92°F)		 30°C
(87°F)		 19°C
(66°F)		 17°C
(64°F)
Average high 1°C
(33°F)		 3°C
(37°F)		 10°C
(51°F)		 16°C
(61°F)		 23°C
(73°F)		 29°C
(85°F)		 31°C
(88°F)		 29°C
(85°F)		 27°C
(80°F)		 18°C
(65°F)		 9°C
(49°F)		 6°C
(43°F)
Daily mean -4°C
(26°F)		 -2°C
(28°F)		 5°C
(42°F)		 10°C
(51°F)		 18°C
(64°F)		 24°C
(76°F)		 26°C
(78°F)		 24°C
(75°F)		 21°C
(70°F)		 13°C
(55°F)		 5°C
(40°F)		 1°C
(34°F)
Average low -8°C
(18°F)		 -7°C
(20°F)		 1°C
(34°F)		 5°C
(41°F)		 13°C
(55°F)		 19°C
(66°F)		 21°C
(69°F)		 18°C
(65°F)		 15°C
(60°F)		 8°C
(47°F)		 -0°C
(32°F)		 -3°C
(26°F)
Mean minimum -22°C
(-7°F)		 -20°C
(-4°F)		 -10°C
(13°F)		 -4°C
(25°F)		 5°C
(42°F)		 14°C
(57°F)		 16°C
(61°F)		 13°C
(56°F)		 8°C
(47°F)		 -2°C
(29°F)		 -10°C
(14°F)		 -14°C
(8°F)
Minimum -29°C
(-20°F)		 -30°C
(-21°F)		 -18°C
(-1°F)		 -9°C
(16°F)		 2°C
(36°F)		 10°C
(50°F)		 15°C
(59°F)		 12°C
(53°F)		 7°C
(44°F)		 -4°C
(24°F)		 -15°C
(5°F)		 -22°C
(-6°F)

Compare climate in Donnellson with other places

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

Monthly average precipitation in Donnellson, Iowa, United States §

Donnellson usually has the most precipitation in May, June and October, with an average of 12 rainy days and 141 mm (5.6 inches) of precipitation per month.The driest months in Donnellson are January, November and December. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Donnellson, Iowa, 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) 55 (2.2) 59 (2.3) 94 (3.7) 90 (3.6) 166 (6.5) 134 (5.3) 78 (3.1) 77 (3.0) 107 (4.2) 124 (4.9) 51 (2.0) 44 (1.7)
Average precipitation days (≥ 1 mm) 6 10 11 11 16 10 9 8 8 12 7 4

Monthly sunshine hours in Donnellson, Iowa, United States §

The sunniest months in Donnellson are June, July and August, when the sun shines an average of 11 hours 5 minutes a day.Least sunny months in Donnellson: January, February and December receive an average of 5 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Donnellson, Iowa, 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 127 183 220 243 270 333 354 332 278 223 204 204
Mean daily daylight hours 9h 37m 10h 39m 11h 58m 13h 19m 14h 27m 15h 1m 14h 43m 13h 42m 12h 24m 11h 3m 9h 53m 9h 17m

Solar UV radiation in Donnellson, Iowa, United States §

Donnellson 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 4. For more detailed information, check out our hourly Donnellson UV Index data.

Average daily maximum UV levels by month for Donnellson, Iowa, 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) 3 5 6 8 9 11 10 9 8 6 4 2