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Monthly climate in Winterset, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Winterset features a humid continental climate (Dfa).Temperatures typically range between -5 °C (23 °F) and 25 °C (78 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 992 mm (39.0 inches) and receives 104 rainy days on the 1 mm (0.04 inches) threshold annually.Winterset enjoys an average of 3043 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 5 minutes per day.

Monthly average temperatures in Winterset, Iowa, United States §

The warmest months in Winterset are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to 0 °C (23 - 32 °F) throughout the day. On average each year, Winterset experiences 99 days above 25 °C (77.0 °F) and 116 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Winterset, 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)		 22°C
(72°F)		 23°C
(74°F)		 30°C
(86°F)		 36°C
(97°F)		 39°C
(102°F)		 36°C
(97°F)		 36°C
(97°F)		 33°C
(92°F)		 31°C
(88°F)		 24°C
(76°F)		 22°C
(72°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 21°C
(71°F)		 27°C
(81°F)		 32°C
(89°F)		 34°C
(93°F)		 35°C
(95°F)		 34°C
(93°F)		 32°C
(91°F)		 29°C
(85°F)		 19°C
(67°F)		 17°C
(63°F)
Average high -0°C
(32°F)		 1°C
(34°F)		 10°C
(50°F)		 16°C
(60°F)		 22°C
(72°F)		 29°C
(84°F)		 30°C
(86°F)		 29°C
(84°F)		 26°C
(79°F)		 17°C
(62°F)		 9°C
(49°F)		 5°C
(41°F)
Daily mean -5°C
(23°F)		 -4°C
(25°F)		 5°C
(41°F)		 10°C
(50°F)		 17°C
(63°F)		 24°C
(75°F)		 25°C
(78°F)		 23°C
(74°F)		 20°C
(69°F)		 11°C
(53°F)		 4°C
(39°F)		 -0°C
(32°F)
Average low -9°C
(15°F)		 -9°C
(16°F)		 -0°C
(32°F)		 4°C
(40°F)		 12°C
(54°F)		 18°C
(65°F)		 20°C
(69°F)		 18°C
(65°F)		 15°C
(59°F)		 7°C
(44°F)		 -1°C
(30°F)		 -5°C
(23°F)
Mean minimum -25°C
(-12°F)		 -22°C
(-7°F)		 -11°C
(12°F)		 -6°C
(21°F)		 4°C
(39°F)		 12°C
(54°F)		 14°C
(58°F)		 12°C
(54°F)		 7°C
(45°F)		 -3°C
(27°F)		 -12°C
(11°F)		 -15°C
(6°F)
Minimum -30°C
(-22°F)		 -28°C
(-18°F)		 -21°C
(-5°F)		 -10°C
(14°F)		 1°C
(34°F)		 9°C
(49°F)		 13°C
(55°F)		 11°C
(52°F)		 6°C
(42°F)		 -6°C
(21°F)		 -20°C
(-4°F)		 -23°C
(-9°F)

Compare climate in Winterset with other places

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

Monthly average precipitation in Winterset, Iowa, United States §

Winterset usually has the most precipitation in May, September and October, with an average of 12 rainy days and 140 mm (5.5 inches) of precipitation per month.The driest months in Winterset are February, November and December. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Winterset, 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) 39 (1.5) 38 (1.5) 84 (3.3) 67 (2.6) 171 (6.7) 115 (4.5) 67 (2.6) 84 (3.3) 117 (4.6) 132 (5.2) 39 (1.5) 39 (1.5)
Average precipitation days (≥ 1 mm) 6 6 10 10 16 10 7 8 9 11 6 5

Monthly sunshine hours in Winterset, Iowa, United States §

The sunniest months in Winterset are June, July and August, when the sun shines an average of 11 hours 23 minutes a day.Least sunny months in Winterset: January, February and November receive an average of 6 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Winterset, 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 139 193 215 259 263 345 370 331 279 224 207 213
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 5m 14h 46m 13h 44m 12h 24m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Winterset, Iowa, United States §

Winterset experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the 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 Winterset UV Index data.

Average daily maximum UV levels by month for Winterset, 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 10 11 10 9 8 6 4 3