Big Eau Pleine Reservoir Weather Forecast
- 52
- 78
Becoming Sunny
- 52
- 74
Mostly Sunny
- 60
- 79
Partly Sunny
- 50
- 74
Chance Rain Showers
- 49
- 67
Rain Showers Likely
- 52
- 67
Rain Showers Likely
Today 9 Sep Marathon
Partly cloudy in the morning then clearing. Patchy fog in the morning. Highs in the upper 70s. West wind 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon. Gusts up to 30 Mph.
Tonight 9 Sep Marathon
Cooler. Clear. Lows around 50. Northwest wind 10 to 15 Mph.
Big Eau Pleine Reservoir Temperature Statistics
September Temperature
Mosinee (6.2 miles)
Lowest 6 September, 2026
59 °FAverage September
69.7 °FHighest 1 September, 2026
87.8 °F
Climate (2021–2026)
Mosinee (6.2 miles)
Average Low 2021–2026
35.8 °FAverage 2021–2026
43.2 °FAverage High 2021–2026
53.6 °F