Lost Lake Weather Forecast
- 53
- 73
Mostly Sunny
- 53
- 74
Mostly Sunny
- 57
- 75
Rain
- 53
- 71
Chance Rain
- 55
- 74
Chance Rain
- 56
- 74
Chance Rain
- 55
- 74
Chance Rain
Today 18 Sep Island County
Mostly sunny. Highs in the 60s to lower 70s. Northwest wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.
Tonight 18 Sep Island County
Mostly clear. Lows in the upper 40s to mid 50s. Northwest wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.
Lost Lake Temperature Statistics
September Temperature
Arlington Municipal Airport (14.9 miles)
Lowest 16 September, 2025
46.4 °FAverage September
63.1 °FHighest 16 September, 2025
90 °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