Waukesha Climate: Weather by Month and Best Time to Visit
Best months for Waukesha: September, July, August, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -9°C | 46 mm | 8 | – | – | 4.0 |
| February | 1°C | -7°C | 44 mm | 7 | – | – | 4.2 |
| March | 7°C | -2°C | 59 mm | 9 | – | – | 5.2 |
| April | 14°C | 4°C | 101 mm | 12 | – | – | 6.0 |
| May | 20°C | 10°C | 97 mm | 12 | – | – | 7.1 |
| June | 25°C | 15°C | 95 mm | 12 | – | – | 7.5 |
| July | 28°C | 18°C | 86 mm | 10 | – | – | 7.7 |
| August | 27°C | 17°C | 90 mm | 10 | – | – | 7.7 |
| September | 23°C | 13°C | 75 mm | 9 | – | – | 7.9 |
| October | 16°C | 7°C | 72 mm | 9 | – | – | 6.9 |
| November | 8°C | 0°C | 55 mm | 8 | – | – | 5.6 |
| December | 1°C | -6°C | 51 mm | 8 | – | – | 4.1 |