Mukwonago weather by month
What a typical year looks like in Mukwonago, Wisconsin: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at WAUKESHA WWTP, 17 km from Mukwonago; records cover 1894–2026.
The year at a glance
- Precipitation a year
- 36 in913 mm
- Snow a year
- 37 in94 cm
- Last spring freeze
- Apr 25
- First fall freeze
- Oct 10
- Heating degree days
- 7,246
- Cooling degree days
- 558
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −7°−22° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Mukwonago in January
Highs average 28°−2° and lows 12°−11°, with 1.6 in41 mm of precipitation and 10 in26 cm of snow in a typical January.
- Record high
- 62°17° (1944)
- Record low
- −27°−33° (1904)
- Heating degree days
- 1406
- Cooling degree days
- 0
Mukwonago in February
Highs average 32°0° and lows 15°−10°, with 1.7 in43 mm of precipitation and 10 in26 cm of snow in a typical February.
- Record high
- 71°22° (2024)
- Record low
- −28°−33° (1996)
- Heating degree days
- 1174
- Cooling degree days
- 0
Mukwonago in March
Highs average 43°6° and lows 24°−4°, with 1.9 in49 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 82°28° (1910)
- Record low
- −14°−26° (1943)
- Heating degree days
- 977
- Cooling degree days
- 0
Mukwonago in April
Highs average 55°13° and lows 35°2°, with 3.7 in93 mm of precipitation and 1.1 in2.8 cm of snow in a typical April.
- Record high
- 91°33° (1980)
- Record low
- 7°−14° (1982)
- Heating degree days
- 600
- Cooling degree days
- 2
Mukwonago in May
Highs average 67°20° and lows 46°8°, with 4 in101 mm of precipitation in a typical May.
- Record high
- 101°38° (1934)
- Record low
- 25°−4° (1911)
- Heating degree days
- 287
- Cooling degree days
- 25
Mukwonago in June
Highs average 77°25° and lows 56°13°, with 4.9 in124 mm of precipitation in a typical June.
- Record high
- 101°38° (1931)
- Record low
- 29°−2° (1945)
- Heating degree days
- 71
- Cooling degree days
- 116
Mukwonago in July
Highs average 81°27° and lows 60°16°, with 4 in101 mm of precipitation in a typical July.
- Record high
- 109°43° (1936)
- Record low
- 41°5° (1918)
- Heating degree days
- 14
- Cooling degree days
- 195
Mukwonago in August
Highs average 80°27° and lows 59°15°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 102°39° (1918)
- Record low
- 35°2° (1915)
- Heating degree days
- 22
- Cooling degree days
- 157
Mukwonago in September
Highs average 73°23° and lows 51°11°, with 3.3 in83 mm of precipitation in a typical September.
- Record high
- 101°38° (1953)
- Record low
- 25°−4° (1942)
- Heating degree days
- 148
- Cooling degree days
- 57
Mukwonago in OctoberThis month
Highs average 60°16° and lows 40°4°, with 2.9 in74 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 88°31° (1963)
- Record low
- 7°−14° (1925)
- Heating degree days
- 474
- Cooling degree days
- 6
Mukwonago in November
Highs average 45°7° and lows 28°−2°, with 2.2 in55 mm of precipitation and 1.8 in4.6 cm of snow in a typical November.
- Record high
- 78°26° (1944)
- Record low
- −9°−23° (1950)
- Heating degree days
- 850
- Cooling degree days
- 0
Mukwonago in December
Highs average 33°1° and lows 18°−8°, with 1.7 in43 mm of precipitation and 9 in22 cm of snow in a typical December.
- Record high
- 68°20° (2001)
- Record low
- −28°−33° (1945)
- Heating degree days
- 1223
- Cooling degree days
- 0