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Monthly climate in Adel, Iowa, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Adel 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 973 mm (38.3 inches) and receives 102 rainy days on the 1 mm (0.04 inches) threshold annually. Adel enjoys an average of 3050 hours of sunshine throughout the year, and daylight varies from 9 hours 12 minutes to 15 hours 7 minutes per day.

Monthly average temperatures in Adel, Iowa, United States §

The warmest months in Adel 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 -1 °C (23 - 31 °F) throughout the day. On average each year, Adel experiences 98 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 Adel, 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)		 24°C
(75°F)		 30°C
(87°F)		 36°C
(97°F)		 39°C
(102°F)		 36°C
(97°F)		 36°C
(97°F)		 34°C
(94°F)		 32°C
(89°F)		 25°C
(77°F)		 22°C
(73°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 21°C
(71°F)		 27°C
(81°F)		 32°C
(90°F)		 34°C
(94°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(92°F)		 30°C
(86°F)		 19°C
(67°F)		 17°C
(63°F)
Average high -1°C
(31°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)		 4°C
(40°F)
Daily mean -5°C
(23°F)		 -4°C
(25°F)		 4°C
(40°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)		 -1°C
(31°F)
Average low -10°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
(68°F)		 18°C
(65°F)		 15°C
(59°F)		 6°C
(44°F)		 -1°C
(30°F)		 -5°C
(23°F)
Mean minimum -24°C
(-12°F)		 -23°C
(-8°F)		 -11°C
(12°F)		 -6°C
(21°F)		 4°C
(39°F)		 12°C
(53°F)		 14°C
(58°F)		 12°C
(54°F)		 7°C
(45°F)		 -3°C
(27°F)		 -12°C
(11°F)		 -15°C
(5°F)
Minimum -30°C
(-22°F)		 -29°C
(-20°F)		 -20°C
(-4°F)		 -10°C
(13°F)		 1°C
(34°F)		 9°C
(49°F)		 12°C
(55°F)		 11°C
(52°F)		 5°C
(41°F)		 -6°C
(21°F)		 -22°C
(-7°F)		 -23°C
(-9°F)

Compare climate in Adel with other places

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

Monthly average precipitation in Adel, Iowa, United States §

Adel usually has the most precipitation in May, June and October, with an average of 12 rainy days and 137 mm (5.4 inches) of precipitation per month. The driest months in Adel are January, November and December. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Adel, 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) 37 (1.5) 39 (1.5) 83 (3.3) 71 (2.8) 174 (6.8) 118 (4.7) 66 (2.6) 87 (3.4) 105 (4.1) 120 (4.7) 36 (1.4) 38 (1.5)
Average precipitation days (≥ 1 mm) 6 7 8 9 17 9 8 8 9 11 6 4

Monthly sunshine hours in Adel, Iowa, United States §

The sunniest months in Adel are June, July and August, when the sun shines an average of 11 hours 25 minutes a day. Least sunny months in Adel: January, February and November receive an average of 6 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Adel, 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 139 195 218 258 263 345 373 332 278 223 209 213
Mean daily daylight hours 9h 32m 10h 37m 11h 58m 13h 21m 14h 32m 15h 7m 14h 48m 13h 45m 12h 24m 11h 2m 9h 49m 9h 12m

Solar UV radiation in Adel, Iowa, United States §

Adel 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 Adel UV Index data.

Average daily maximum UV levels by month for Adel, 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

Detailed Monthly Weather Insights for Adel, Iowa, United States

Discover in-depth weather details for every month in Adel. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Adel's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.