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Monthly climate in Iron River, Wisconsin, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Iron River features a humid continental climate (Dfb). Temperatures typically range between -10 °C (14 °F) and 21 °C (70 °F) through the year, but rarely can drop to -33 °C (-27 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 915 mm (36.0 inches) and receives 112 rainy days on the 1 mm (0.04 inches) threshold annually. Iron River enjoys an average of 2786 hours of sunshine throughout the year, and daylight varies from 8 hours 37 minutes to 15 hours 45 minutes per day.

Monthly average temperatures in Iron River, Wisconsin, United States §

The warmest months in Iron River are June, July and August, with daily mean temperatures ranging from 19 to 21 °C (66 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -10 to -6 °C (14 - 21 °F) throughout the day. On average each year, Iron River experiences 56 days above 25 °C (77.0 °F) and 158 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Iron River, Wisconsin, 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 7°C
(46°F)		 13°C
(56°F)		 18°C
(65°F)		 27°C
(82°F)		 33°C
(92°F)		 36°C
(97°F)		 34°C
(94°F)		 34°C
(93°F)		 32°C
(89°F)		 28°C
(82°F)		 24°C
(75°F)		 15°C
(59°F)
Mean maximum 4°C
(39°F)		 6°C
(43°F)		 14°C
(58°F)		 21°C
(71°F)		 28°C
(84°F)		 32°C
(91°F)		 32°C
(90°F)		 32°C
(89°F)		 30°C
(86°F)		 24°C
(76°F)		 13°C
(56°F)		 9°C
(48°F)
Average high -6°C
(21°F)		 -5°C
(23°F)		 3°C
(38°F)		 9°C
(49°F)		 19°C
(66°F)		 25°C
(77°F)		 27°C
(81°F)		 25°C
(77°F)		 21°C
(70°F)		 12°C
(53°F)		 2°C
(37°F)		 -3°C
(27°F)
Daily mean -10°C
(14°F)		 -10°C
(14°F)		 -2°C
(29°F)		 4°C
(39°F)		 12°C
(55°F)		 19°C
(66°F)		 21°C
(70°F)		 19°C
(67°F)		 15°C
(60°F)		 7°C
(45°F)		 -1°C
(30°F)		 -6°C
(21°F)
Average low -14°C
(6°F)		 -15°C
(5°F)		 -7°C
(20°F)		 -1°C
(30°F)		 7°C
(44°F)		 13°C
(55°F)		 15°C
(60°F)		 14°C
(58°F)		 10°C
(51°F)		 4°C
(39°F)		 -5°C
(24°F)		 -10°C
(14°F)
Mean minimum -28°C
(-17°F)		 -27°C
(-17°F)		 -20°C
(-4°F)		 -11°C
(13°F)		 -1°C
(31°F)		 7°C
(46°F)		 9°C
(48°F)		 8°C
(46°F)		 3°C
(37°F)		 -5°C
(24°F)		 -14°C
(7°F)		 -24°C
(-10°F)
Minimum -32°C
(-24°F)		 -33°C
(-27°F)		 -26°C
(-14°F)		 -16°C
(3°F)		 -3°C
(28°F)		 4°C
(39°F)		 6°C
(43°F)		 6°C
(43°F)		 -1°C
(31°F)		 -10°C
(14°F)		 -17°C
(3°F)		 -29°C
(-21°F)

Compare climate in Iron River with other places

Compare temperature, precipitation, sunshine, UV index in Iron River, Wisconsin, United States with other places around the world.

Monthly average precipitation in Iron River, Wisconsin, United States §

Iron River usually has the most precipitation in July, August and October, with an average of 10 rainy days and 105 mm (4.1 inches) of precipitation per month. The driest months in Iron River are January, February and March. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Iron River, Wisconsin, 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) 28 (1.1) 38 (1.5) 46 (1.8) 84 (3.3) 98 (3.8) 92 (3.6) 111 (4.4) 101 (4.0) 99 (3.9) 102 (4.0) 49 (1.9) 66 (2.6)
Average precipitation days (≥ 1 mm) 6 8 6 10 10 10 9 11 12 12 8 10

Monthly sunshine hours in Iron River, Wisconsin, United States §

The sunniest months in Iron River are June, July and August, when the sun shines an average of 10 hours 53 minutes a day. Least sunny months in Iron River: January, November and December receive an average of 4 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Iron River, Wisconsin, 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 115 187 234 230 287 343 351 306 248 188 155 137
Mean daily daylight hours 9h 2m 10h 19m 11h 57m 13h 37m 15h 2m 15h 45m 15h 21m 14h 5m 12h 29m 10h 49m 9h 22m 8h 37m

Solar UV radiation in Iron River, Wisconsin, United States §

Iron River experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / 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 Iron River UV Index data.

Average daily maximum UV levels by month for Iron River, Wisconsin, 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) 2 4 5 7 8 10 9 8 7 5 3 2

Detailed Monthly Weather Insights for Iron River, Wisconsin, United States

Discover in-depth weather details for every month in Iron River. 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 Iron River'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.