South Twin Lake Weather Forecast
- 59
- 81
Mostly Sunny
- 58
- 75
Chance Thunderstorms
- 54
- 69
Chance Thunderstorms
- 53
- 66
Chance Rain Showers
- 54
- 67
Chance Rain Showers
- 54
- 71
Partly Sunny
Today 16 Sep Mahnomen
Sunny. Highs 80 to 85. West Winds up to 10 Mph.
Tonight 16 Sep Mahnomen
Partly cloudy. Lows 55 to 60. Northwest Winds around 5 Mph in the evening becoming light and variable.
South Twin Lake Temperature Statistics
September Temperature
Mahnomen County Airport (13 miles)
Lowest 7 September, 2025
34 °FAverage September
57.5 °FHighest 13 September, 2025
77 °F
Climate (2020–Present)
Mahnomen County Airport (13 miles)
Average Low 2020–2025
32.2 °FAverage 2020–2025
41.8 °FAverage High 2020–2025
51.1 °F