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Monthly climate in Alden, Iowa, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Alden 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 -33 °C (-26 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1004 mm (39.5 inches) and receives 107 rainy days on the 1 mm (0.04 inches) threshold annually. Alden enjoys an average of 3031 hours of sunshine throughout the year, and daylight varies from 9 hours 6 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Alden, Iowa, United States §

The warmest months in Alden are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 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, Alden experiences 87 days above 25 °C (77.0 °F) and 131 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Alden, 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
(69°F)		 22°C
(73°F)		 29°C
(85°F)		 35°C
(95°F)		 37°C
(99°F)		 34°C
(94°F)		 37°C
(99°F)		 34°C
(94°F)		 31°C
(88°F)		 25°C
(77°F)		 22°C
(71°F)
Mean maximum 10°C
(49°F)		 13°C
(55°F)		 20°C
(67°F)		 25°C
(78°F)		 32°C
(89°F)		 33°C
(92°F)		 34°C
(93°F)		 32°C
(90°F)		 32°C
(90°F)		 29°C
(85°F)		 18°C
(65°F)		 15°C
(60°F)
Average high -2°C
(28°F)		 -2°C
(29°F)		 8°C
(46°F)		 14°C
(57°F)		 21°C
(71°F)		 28°C
(82°F)		 29°C
(84°F)		 27°C
(81°F)		 25°C
(77°F)		 15°C
(60°F)		 7°C
(45°F)		 3°C
(37°F)
Daily mean -7°C
(20°F)		 -7°C
(20°F)		 3°C
(37°F)		 8°C
(47°F)		 16°C
(61°F)		 23°C
(73°F)		 24°C
(75°F)		 22°C
(72°F)		 19°C
(67°F)		 10°C
(51°F)		 2°C
(36°F)		 -2°C
(29°F)
Average low -11°C
(13°F)		 -11°C
(12°F)		 -2°C
(29°F)		 3°C
(37°F)		 11°C
(52°F)		 17°C
(64°F)		 19°C
(66°F)		 17°C
(63°F)		 14°C
(57°F)		 5°C
(42°F)		 -3°C
(28°F)		 -6°C
(21°F)
Mean minimum -25°C
(-12°F)		 -25°C
(-13°F)		 -14°C
(8°F)		 -7°C
(19°F)		 3°C
(38°F)		 11°C
(52°F)		 13°C
(56°F)		 11°C
(52°F)		 6°C
(43°F)		 -4°C
(26°F)		 -12°C
(10°F)		 -17°C
(2°F)
Minimum -32°C
(-26°F)		 -33°C
(-26°F)		 -23°C
(-9°F)		 -12°C
(10°F)		 -0°C
(32°F)		 9°C
(48°F)		 13°C
(55°F)		 10°C
(50°F)		 3°C
(38°F)		 -7°C
(19°F)		 -17°C
(1°F)		 -23°C
(-9°F)

Compare climate in Alden with other places

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

Monthly average precipitation in Alden, Iowa, United States §

Alden usually has the most precipitation in May, September and October, with an average of 11 rainy days and 136 mm (5.3 inches) of precipitation per month. The driest months in Alden are January, November and December. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alden, 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) 35 (1.4) 46 (1.8) 71 (2.8) 76 (3.0) 166 (6.5) 113 (4.4) 89 (3.5) 88 (3.5) 120 (4.7) 122 (4.8) 44 (1.7) 36 (1.4)
Average precipitation days (≥ 1 mm) 5 7 8 10 15 12 9 10 10 9 7 5

Monthly sunshine hours in Alden, Iowa, United States §

The sunniest months in Alden are June, July and August, when the sun shines an average of 11 hours 24 minutes a day. Least sunny months in Alden: January, February and December 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 Alden, 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 139 193 228 252 259 345 373 330 270 225 207 205
Mean daily daylight hours 9h 27m 10h 33m 11h 58m 13h 24m 14h 37m 15h 14m 14h 54m 13h 48m 12h 25m 10h 59m 9h 44m 9h 6m

Solar UV radiation in Alden, Iowa, United States §

Alden 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 Alden UV Index data.

Average daily maximum UV levels by month for Alden, 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 6 3 3

Detailed Monthly Weather Insights for Alden, Iowa, United States

Discover in-depth weather details for every month in Alden. 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 Alden'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.