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Monthly climate in Wauwatosa, Wisconsin, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Wauwatosa features a humid continental climate (Dfb).Temperatures typically range between -4 °C (25 °F) and 22 °C (72 °F) through the year, but rarely can drop to -29 °C (-20 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 1014 mm (39.9 inches) and receives 122 rainy days on the 1 mm (0.04 inches) threshold annually.Wauwatosa enjoys an average of 2964 hours of sunshine throughout the year, and daylight varies from 9 hours 2 minutes to 15 hours 18 minutes per day.

Monthly average temperatures in Wauwatosa, Wisconsin, United States §

The warmest months in Wauwatosa are July, August and September, with daily mean temperatures ranging from 19 to 22 °C (66 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to 0 °C (25 - 32 °F) throughout the day. On average each year, Wauwatosa experiences 42 days above 25 °C (77.0 °F) and 107 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Wauwatosa, 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 11°C
(53°F)		 16°C
(61°F)		 16°C
(61°F)		 22°C
(72°F)		 27°C
(80°F)		 30°C
(86°F)		 32°C
(90°F)		 31°C
(88°F)		 30°C
(86°F)		 26°C
(80°F)		 20°C
(69°F)		 17°C
(63°F)
Mean maximum 8°C
(46°F)		 11°C
(51°F)		 14°C
(57°F)		 19°C
(67°F)		 25°C
(77°F)		 28°C
(82°F)		 31°C
(87°F)		 30°C
(85°F)		 28°C
(83°F)		 25°C
(77°F)		 16°C
(60°F)		 13°C
(55°F)
Average high -1°C
(30°F)		 -0°C
(32°F)		 5°C
(42°F)		 10°C
(50°F)		 16°C
(60°F)		 22°C
(72°F)		 26°C
(78°F)		 25°C
(78°F)		 22°C
(72°F)		 15°C
(59°F)		 6°C
(44°F)		 3°C
(37°F)
Daily mean -4°C
(25°F)		 -4°C
(26°F)		 2°C
(36°F)		 6°C
(44°F)		 12°C
(54°F)		 18°C
(66°F)		 22°C
(72°F)		 22°C
(72°F)		 19°C
(66°F)		 12°C
(53°F)		 3°C
(39°F)		 -0°C
(32°F)
Average low -7°C
(19°F)		 -7°C
(19°F)		 -1°C
(30°F)		 3°C
(38°F)		 9°C
(48°F)		 15°C
(59°F)		 19°C
(66°F)		 18°C
(65°F)		 15°C
(60°F)		 9°C
(48°F)		 0°C
(33°F)		 -3°C
(27°F)
Mean minimum -20°C
(-4°F)		 -20°C
(-4°F)		 -12°C
(10°F)		 -3°C
(26°F)		 2°C
(36°F)		 11°C
(51°F)		 15°C
(59°F)		 14°C
(57°F)		 9°C
(48°F)		 1°C
(34°F)		 -8°C
(18°F)		 -13°C
(10°F)
Minimum -29°C
(-20°F)		 -29°C
(-20°F)		 -22°C
(-8°F)		 -7°C
(19°F)		 -0°C
(32°F)		 7°C
(45°F)		 13°C
(56°F)		 12°C
(54°F)		 5°C
(42°F)		 -1°C
(31°F)		 -13°C
(9°F)		 -20°C
(-3°F)

Compare climate in Wauwatosa with other places

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

Monthly average precipitation in Wauwatosa, Wisconsin, United States §

Wauwatosa usually has the most precipitation in April, May and October, with an average of 13 rainy days and 123 mm (4.8 inches) of precipitation per month.The driest months in Wauwatosa are February, November and December. On average, 55 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Wauwatosa, 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) 63 (2.5) 60 (2.4) 68 (2.7) 109 (4.3) 138 (5.4) 96 (3.8) 82 (3.2) 75 (2.9) 96 (3.8) 121 (4.8) 54 (2.1) 53 (2.1)
Average precipitation days (≥ 1 mm) 8 10 10 13 13 11 10 10 9 13 8 7

Monthly sunshine hours in Wauwatosa, Wisconsin, United States §

The sunniest months in Wauwatosa are June, July and August, when the sun shines an average of 11 hours 14 minutes a day.Least sunny months in Wauwatosa: January, November and December receive an average of 5 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Wauwatosa, 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 120 185 241 252 290 327 365 341 282 210 185 160
Mean daily daylight hours 9h 23m 10h 31m 11h 57m 13h 26m 14h 40m 15h 18m 14h 57m 13h 51m 12h 26m 10h 58m 9h 41m 9h 2m

Solar UV radiation in Wauwatosa, Wisconsin, United States §

Wauwatosa 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 Wauwatosa UV Index data.

Average daily maximum UV levels by month for Wauwatosa, 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 8 9 10 10 9 7 5 3 2