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Waukesha County, WI Climate
1991 to 2020 normals at Waukesha Wwtp, 2.9 mi from the center of Waukesha County, elevation 789 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 28° | 12° | 1.60 in | 10.4 in | |
| February | 32° | 15° | 1.71 in | 10.1 in | |
| March | 43° | 24° | 1.93 in | 4.6 in | |
| April | 55° | 35° | 3.65 in | 1.1 in | |
| May | 67° | 46° | 3.97 in | 0.0 in | |
| June | 77° | 56° | 4.88 in | 0.0 in | |
| July | 81° | 60° | 3.99 in | 0.0 in | |
| August | 80° | 59° | 4.18 in | 0.0 in | |
| September | 73° | 51° | 3.27 in | 0.0 in | |
| October | 60° | 40° | 2.92 in | 0.1 in | |
| November | 45° | 28° | 2.15 in | 1.8 in | |
| December | 33° | 18° | 1.70 in | 8.8 in | |
| Year | 56° | 35.95 in | 36.9 in |
Frequently asked questions
- What is the hottest month in Waukesha County, WI?
- July is the warmest month, with a normal high of 81°F at Waukesha Wwtp.
- What is the coldest month in Waukesha County, WI?
- January is the coldest month, with a normal low of 12°F.
- What is the wettest month in Waukesha County, WI?
- June has the most precipitation on average, about 4.88 inches.