Wauwatosa weather by month
What a typical year looks like in Wauwatosa, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Milwaukee Mitchell Airport, 16 km from Wauwatosa; records cover 1871–2026.
The year at a glance
- Precipitation a year
- 34.6 in878 mm
- Snow a year
- 49 in124 cm
- Last spring freeze
- Apr 22
- First fall freeze
- Oct 22
- Heating degree days
- 6,451
- Cooling degree days
- 780
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Wauwatosa in January
Highs average 31°−1° and lows 17°−8°, with 1.8 in45 mm of precipitation and 15 in38 cm of snow in a typical January.
- Record high
- 63°17° (2008)
- Record low
- −26°−32° (1982)
- Heating degree days
- 1269
- Cooling degree days
- 0
Wauwatosa in February
Highs average 34°1° and lows 20°−7°, with 1.7 in43 mm of precipitation and 12 in30 cm of snow in a typical February.
- Record high
- 74°23° (2024)
- Record low
- −26°−32° (1996)
- Heating degree days
- 1061
- Cooling degree days
- 0
Wauwatosa in March
Highs average 44°7° and lows 29°−2°, with 2.2 in56 mm of precipitation and 7 in17 cm of snow in a typical March.
- Record high
- 84°29° (2012)
- Record low
- −10°−23° (1962)
- Heating degree days
- 886
- Cooling degree days
- 1
Wauwatosa in April
Highs average 55°13° and lows 38°3°, with 3.9 in98 mm of precipitation and 2.1 in5.3 cm of snow in a typical April.
- Record high
- 91°33° (1980)
- Record low
- 12°−11° (1875)
- Heating degree days
- 566
- Cooling degree days
- 4
Wauwatosa in May
Highs average 67°19° and lows 48°9°, with 3.5 in90 mm of precipitation in a typical May.
- Record high
- 95°35° (2018)
- Record low
- 21°−6° (1966)
- Heating degree days
- 278
- Cooling degree days
- 34
Wauwatosa in June
Highs average 77°25° and lows 58°15°, with 4.4 in111 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 33°1° (1945)
- Heating degree days
- 64
- Cooling degree days
- 142
Wauwatosa in July
Highs average 82°28° and lows 65°18°, with 3.4 in86 mm of precipitation in a typical July.
- Record high
- 105°41° (1934)
- Record low
- 40°4° (1965)
- Heating degree days
- 6
- Cooling degree days
- 263
Wauwatosa in August
Highs average 80°27° and lows 64°18°, with 3.7 in93 mm of precipitation in a typical August.
- Record high
- 103°39° (1988)
- Record low
- 42°6° (1875)
- Heating degree days
- 8
- Cooling degree days
- 232
Wauwatosa in September
Highs average 74°23° and lows 56°14°, with 3.2 in80 mm of precipitation in a typical September.
- Record high
- 99°37° (1939)
- Record low
- 28°−2° (1942)
- Heating degree days
- 94
- Cooling degree days
- 93
Wauwatosa in OctoberThis month
Highs average 61°16° and lows 45°7°, with 2.8 in71 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 89°32° (1963)
- Record low
- 15°−9° (1887)
- Heating degree days
- 383
- Cooling degree days
- 11
Wauwatosa in November
Highs average 48°9° and lows 33°1°, with 2.2 in57 mm of precipitation and 2.5 in6.4 cm of snow in a typical November.
- Record high
- 77°25° (1938)
- Record low
- −14°−26° (1875)
- Heating degree days
- 737
- Cooling degree days
- 0
Wauwatosa in December
Highs average 36°2° and lows 23°−5°, with 1.9 in48 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 68°20° (2001)
- Record low
- −22°−30° (1884)
- Heating degree days
- 1099
- Cooling degree days
- 0