Lost Lake Weather Forecast
- 54
- 72
Becoming Sunny
- 58
- 84
Mostly Sunny
- 54
- 75
Partly Sunny
- 54
- 73
Mostly Sunny
- 55
- 75
Mostly Sunny
- 56
- 75
Chance Rain
Today 15 Sep Island County
Partly sunny in the morning then becoming sunny. Highs in the 60s. Light wind becoming northwest to 10 Mph in the afternoon.
Tonight 15 Sep Island County
Mostly clear. Lows in the lower to mid 50s. Northwest wind to 10 Mph.
Lost Lake Temperature Statistics
September Temperature
Arlington Municipal Airport (14.9 miles)
Lowest 9 September, 2025
51.8 °FAverage September
63.3 °FHighest 3 September, 2025
81 °F
Climate (2020–Present)
Arlington Municipal Airport (14.9 miles)
Average Low 2020–2025
42.4 °FAverage 2020–2025
50.6 °FAverage High 2020–2025
59.7 °F