nomadseason

Monthly climate in Allison, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Allison features a humid continental climate (Dfa).Temperatures typically range between -7 °C (20 °F) and 24 °C (75 °F) through the year, but rarely can drop to -35 °C (-30 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1038 mm (40.9 inches) and receives 108 rainy days on the 1 mm (0.04 inches) threshold annually.Allison enjoys an average of 2967 hours of sunshine throughout the year, and daylight varies from 9 hours 4 minutes to 15 hours 15 minutes per day.

Monthly average temperatures in Allison, Iowa, United States §

The warmest months in Allison are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (71 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -2 °C (20 - 29 °F) throughout the day. On average each year, Allison experiences 83 days above 25 °C (77.0 °F) and 132 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Allison, 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 12°C
(54°F)		 20°C
(68°F)		 22°C
(72°F)		 28°C
(82°F)		 34°C
(94°F)		 36°C
(96°F)		 34°C
(93°F)		 36°C
(97°F)		 33°C
(92°F)		 31°C
(88°F)		 24°C
(76°F)		 22°C
(71°F)
Mean maximum 9°C
(49°F)		 12°C
(53°F)		 19°C
(66°F)		 25°C
(77°F)		 32°C
(89°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(89°F)		 32°C
(90°F)		 29°C
(85°F)		 18°C
(64°F)		 15°C
(59°F)
Average high -3°C
(27°F)		 -2°C
(28°F)		 7°C
(45°F)		 14°C
(57°F)		 21°C
(70°F)		 28°C
(82°F)		 28°C
(83°F)		 27°C
(81°F)		 24°C
(76°F)		 15°C
(60°F)		 7°C
(45°F)		 2°C
(37°F)
Daily mean -7°C
(20°F)		 -7°C
(20°F)		 2°C
(36°F)		 8°C
(47°F)		 16°C
(61°F)		 22°C
(73°F)		 24°C
(75°F)		 22°C
(71°F)		 19°C
(66°F)		 10°C
(51°F)		 2°C
(36°F)		 -2°C
(29°F)
Average low -11°C
(13°F)		 -12°C
(12°F)		 -2°C
(28°F)		 3°C
(37°F)		 11°C
(52°F)		 17°C
(63°F)		 19°C
(66°F)		 16°C
(62°F)		 13°C
(56°F)		 6°C
(42°F)		 -3°C
(27°F)		 -6°C
(21°F)
Mean minimum -25°C
(-13°F)		 -25°C
(-13°F)		 -15°C
(5°F)		 -7°C
(19°F)		 2°C
(36°F)		 11°C
(52°F)		 13°C
(56°F)		 11°C
(52°F)		 6°C
(43°F)		 -4°C
(24°F)		 -12°C
(10°F)		 -17°C
(2°F)
Minimum -34°C
(-28°F)		 -35°C
(-30°F)		 -23°C
(-10°F)		 -12°C
(11°F)		 -1°C
(30°F)		 8°C
(47°F)		 12°C
(53°F)		 10°C
(51°F)		 2°C
(36°F)		 -7°C
(20°F)		 -17°C
(2°F)		 -22°C
(-7°F)

Compare climate in Allison with other places

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

Monthly average precipitation in Allison, Iowa, United States §

Allison usually has the most precipitation in May, June and October, with an average of 12 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Allison are January, November and December. On average, 40 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Allison, 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) 48 (1.9) 72 (2.8) 77 (3.0) 155 (6.1) 118 (4.7) 96 (3.8) 112 (4.4) 109 (4.3) 129 (5.1) 47 (1.9) 35 (1.4)
Average precipitation days (≥ 1 mm) 6 8 8 10 14 12 9 8 10 11 7 5

Monthly sunshine hours in Allison, Iowa, United States §

The sunniest months in Allison are June, July and August, when the sun shines an average of 11 hours 15 minutes a day.Least sunny months in Allison: January, February and December receive an average of 5 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Allison, 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 135 192 227 242 257 340 368 327 263 216 201 195
Mean daily daylight hours 9h 25m 10h 33m 11h 58m 13h 25m 14h 38m 15h 15m 14h 55m 13h 49m 12h 25m 10h 59m 9h 43m 9h 4m

Solar UV radiation in Allison, Iowa, United States §

Allison 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 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 Allison UV Index data.

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