Erin Aero Airport Weather Forecast
- 59
- 84
Mostly Sunny
- 61
- 82
Partly Sunny
- 60
- 75
Mostly Cloudy
- 61
- 76
Slight Chance Thunderstorms
- 61
- 79
Chance Thunderstorms
- 59
- 79
Chance Rain Showers
- 55
- 75
Slight Chance Thunderstorms
Today 17 Sep Washington
Sunny. South Winds up to 5 Mph.
Tonight 17 Sep Washington
Partly cloudy. Lows in the lower 60s. South Winds up to 5 Mph.
Erin Aero Airport Temperature Statistics
September Temperature
Waukesha County Airport (14.9 miles)
Lowest 8 September, 2025
41 °FAverage September
58.9 °FHighest 12 September, 2025
80.6 °F
Climate (2020–Present)
Waukesha County Airport (14.9 miles)
Average Low 2020–2025
38.2 °FAverage 2020–2025
45.7 °FAverage High 2020–2025
56.2 °F