Harper Lake Weather Forecast
- 46
- 75
Becoming Sunny
- 54
- 79
Mostly Sunny
- 54
- 79
Slight Chance Thunderstorms
- 53
- 76
Mostly Cloudy
- 61
- 79
Rain Showers
- 50
- 72
Mostly Cloudy
Today 10 Sep Lake
Mostly sunny. Highs in the mid 70s. Light Winds becoming northwest 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.
Tonight 10 Sep Lake
Clear. Lows in the mid 40s. Light Winds.
Harper Lake Temperature Statistics
September Temperature
Manistee County - Blacker Airport (16.2 miles)
Lowest 6 September, 2026
54 °FAverage September
70.5 °FHighest 1 September, 2026
86 °F
Climate (2021–2026)
Manistee County - Blacker Airport (16.2 miles)
Average Low 2021–2026
38.4 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
56.1 °F