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Monthly climate in Boone, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Boone features a humid continental climate (Dfa).Temperatures typically range between -6 °C (22 °F) and 25 °C (77 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 998 mm (39.3 inches) and receives 104 rainy days on the 1 mm (0.04 inches) threshold annually.Boone enjoys an average of 2982 hours of sunshine throughout the year, and daylight varies from 9 hours 9 minutes to 15 hours 10 minutes per day.

Monthly average temperatures in Boone, Iowa, United States §

The warmest months in Boone are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -1 °C (22 - 30 °F) throughout the day. On average each year, Boone experiences 96 days above 25 °C (77.0 °F) and 126 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Boone, 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 13°C
(55°F)		 21°C
(71°F)		 24°C
(75°F)		 31°C
(87°F)		 36°C
(97°F)		 38°C
(101°F)		 36°C
(97°F)		 37°C
(99°F)		 35°C
(95°F)		 32°C
(89°F)		 26°C
(78°F)		 22°C
(72°F)
Mean maximum 11°C
(52°F)		 14°C
(58°F)		 21°C
(70°F)		 26°C
(80°F)		 32°C
(90°F)		 34°C
(93°F)		 34°C
(94°F)		 33°C
(92°F)		 33°C
(91°F)		 30°C
(86°F)		 19°C
(67°F)		 16°C
(62°F)
Average high -1°C
(30°F)		 -0°C
(32°F)		 9°C
(48°F)		 15°C
(59°F)		 22°C
(71°F)		 29°C
(84°F)		 30°C
(86°F)		 28°C
(83°F)		 26°C
(78°F)		 16°C
(61°F)		 8°C
(47°F)		 4°C
(39°F)
Daily mean -6°C
(22°F)		 -5°C
(23°F)		 4°C
(39°F)		 9°C
(49°F)		 17°C
(62°F)		 23°C
(74°F)		 25°C
(77°F)		 23°C
(74°F)		 20°C
(68°F)		 11°C
(52°F)		 3°C
(38°F)		 -1°C
(30°F)
Average low -10°C
(14°F)		 -10°C
(14°F)		 -1°C
(30°F)		 4°C
(39°F)		 12°C
(53°F)		 18°C
(64°F)		 20°C
(67°F)		 18°C
(64°F)		 14°C
(58°F)		 6°C
(43°F)		 -2°C
(29°F)		 -6°C
(22°F)
Mean minimum -24°C
(-11°F)		 -24°C
(-10°F)		 -12°C
(11°F)		 -7°C
(20°F)		 4°C
(39°F)		 11°C
(53°F)		 14°C
(57°F)		 12°C
(54°F)		 7°C
(44°F)		 -3°C
(27°F)		 -12°C
(10°F)		 -16°C
(4°F)
Minimum -30°C
(-21°F)		 -30°C
(-22°F)		 -21°C
(-5°F)		 -11°C
(12°F)		 0°C
(33°F)		 8°C
(47°F)		 13°C
(55°F)		 10°C
(51°F)		 4°C
(39°F)		 -7°C
(20°F)		 -21°C
(-6°F)		 -23°C
(-9°F)

Compare climate in Boone with other places

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

Monthly average precipitation in Boone, Iowa, United States §

Boone usually has the most precipitation in May, September and October, with an average of 11 rainy days and 139 mm (5.5 inches) of precipitation per month.The driest months in Boone are January, November and December. On average, 36 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Boone, 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) 34 (1.3) 40 (1.6) 77 (3.0) 74 (2.9) 166 (6.5) 99 (3.9) 90 (3.6) 93 (3.7) 124 (4.9) 127 (5.0) 38 (1.5) 37 (1.5)
Average precipitation days (≥ 1 mm) 6 8 8 10 15 10 8 9 9 10 6 5

Monthly sunshine hours in Boone, Iowa, United States §

The sunniest months in Boone are June, July and August, when the sun shines an average of 11 hours 13 minutes a day.Least sunny months in Boone: January, February and November receive an average of 5 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Boone, 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 136 190 218 250 250 340 369 324 269 217 207 208
Mean daily daylight hours 9h 29m 10h 35m 11h 58m 13h 23m 14h 35m 15h 10m 14h 50m 13h 46m 12h 25m 11h 0m 9h 47m 9h 9m

Solar UV radiation in Boone, Iowa, United States §

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

Average daily maximum UV levels by month for Boone, 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 3