Murphy Lake Weather Forecast
- 68
- 86
Thunderstorms
- 62
- 81
Mostly Cloudy
- 61
- 79
Partly Sunny
- 63
- 79
Mostly Cloudy
- 69
- 81
Rain Showers Likely
- 64
- 84
Chance Rain Showers
Today 4 Sep Washington
Warm and humid. Cloudy with light Showers and Thunderstorms likely in the Morning, then mostly cloudy with slight chance of light Showers and Thunderstorms late in the morning. Partly sunny in the afternoon. Highs in the mid 80s. South Winds up to 5 Mph shifting to the southwest in the afternoon. Chance of precipitation 60 percent. Highest heat index Readings around 95 in the afternoon.
Tonight 4 Sep Washington
Partly cloudy until early morning then becoming mostly cloudy. Chance of light Showers and Thunderstorms through around Midnight, then slight chance of light Showers after midnight. Patchy fog after midnight. Lows in the upper 60s. Northeast Winds up to 5 Mph through around midnight becoming calm. Chance of precipitation 40 percent.
Murphy Lake Temperature Statistics
September Temperature
Waukesha County Airport (13.7 miles)
Lowest 2 September, 2026
71.6 °FAverage September
77.9 °FHighest 1 September, 2026
87.8 °F
Climate (2021–2026)
Waukesha County Airport (13.7 miles)
Average Low 2021–2026
38.7 °FAverage 2021–2026
46.2 °FAverage High 2021–2026
56.6 °F