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Monthly climate in Marathon, Wisconsin, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Marathon features a humid continental climate (Dfb).Temperatures typically range between -9 °C (17 °F) and 22 °C (71 °F) through the year, but rarely can drop to -33 °C (-28 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 972 mm (38.3 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually.Marathon enjoys an average of 2822 hours of sunshine throughout the year, and daylight varies from 8 hours 49 minutes to 15 hours 31 minutes per day.

Monthly average temperatures in Marathon, Wisconsin, United States §

The warmest months in Marathon are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (67 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -5 °C (17 - 23 °F) throughout the day. On average each year, Marathon experiences 53 days above 25 °C (77.0 °F) and 150 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Marathon, 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
(45°F)		 15°C
(59°F)		 17°C
(63°F)		 26°C
(79°F)		 33°C
(92°F)		 34°C
(94°F)		 33°C
(91°F)		 32°C
(89°F)		 32°C
(90°F)		 27°C
(80°F)		 22°C
(72°F)		 15°C
(59°F)
Mean maximum 4°C
(40°F)		 8°C
(48°F)		 14°C
(58°F)		 22°C
(72°F)		 29°C
(84°F)		 32°C
(89°F)		 32°C
(89°F)		 30°C
(86°F)		 29°C
(85°F)		 25°C
(77°F)		 14°C
(58°F)		 10°C
(50°F)
Average high -5°C
(24°F)		 -3°C
(26°F)		 4°C
(40°F)		 10°C
(51°F)		 19°C
(66°F)		 24°C
(76°F)		 26°C
(80°F)		 25°C
(76°F)		 21°C
(70°F)		 13°C
(55°F)		 4°C
(39°F)		 -2°C
(29°F)
Daily mean -9°C
(17°F)		 -8°C
(17°F)		 -1°C
(31°F)		 5°C
(42°F)		 13°C
(56°F)		 19°C
(67°F)		 22°C
(71°F)		 19°C
(67°F)		 16°C
(61°F)		 8°C
(47°F)		 -0°C
(32°F)		 -5°C
(23°F)
Average low -13°C
(9°F)		 -14°C
(8°F)		 -5°C
(23°F)		 0°C
(32°F)		 8°C
(47°F)		 14°C
(58°F)		 16°C
(62°F)		 14°C
(58°F)		 11°C
(52°F)		 4°C
(40°F)		 -4°C
(26°F)		 -9°C
(16°F)
Mean minimum -27°C
(-17°F)		 -26°C
(-15°F)		 -19°C
(-1°F)		 -9°C
(16°F)		 -0°C
(32°F)		 9°C
(49°F)		 12°C
(53°F)		 8°C
(47°F)		 4°C
(39°F)		 -4°C
(25°F)		 -13°C
(10°F)		 -22°C
(-7°F)
Minimum -32°C
(-25°F)		 -33°C
(-28°F)		 -26°C
(-15°F)		 -20°C
(-3°F)		 -2°C
(28°F)		 5°C
(42°F)		 11°C
(51°F)		 5°C
(42°F)		 -0°C
(32°F)		 -6°C
(21°F)		 -16°C
(4°F)		 -30°C
(-22°F)

Compare climate in Marathon with other places

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

Monthly average precipitation in Marathon, Wisconsin, United States §

Marathon usually has the most precipitation in July, August and October, with an average of 11 rainy days and 116 mm (4.6 inches) of precipitation per month.The driest months in Marathon are January, February and November. On average, 44 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Marathon, 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) 34 (1.3) 50 (2.0) 53 (2.1) 98 (3.9) 103 (4.1) 102 (4.0) 117 (4.6) 121 (4.8) 83 (3.3) 109 (4.3) 50 (2.0) 52 (2.1)
Average precipitation days (≥ 1 mm) 6 7 8 12 13 12 11 12 10 11 7 8

Monthly sunshine hours in Marathon, Wisconsin, United States §

The sunniest months in Marathon are June, July and August, when the sun shines an average of 10 hours 50 minutes a day.Least sunny months in Marathon: January, November and December receive an average of 4 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Marathon, 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 118 197 235 232 282 330 356 310 254 189 170 142
Mean daily daylight hours 9h 12m 10h 25m 11h 57m 13h 31m 14h 51m 15h 31m 15h 9m 13h 58m 12h 27m 10h 54m 9h 31m 8h 49m

Solar UV radiation in Marathon, Wisconsin, United States §

Marathon experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 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 Marathon UV Index data.

Average daily maximum UV levels by month for Marathon, 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 9 7 5 3 2