Big Sandy Lake Weather Forecast
- 45
- 71
Increasing Clouds
- 36
- 65
Chance Rain Showers
- 32
- 60
Mostly Sunny
- 41
- 64
Mostly Cloudy
- 41
- 67
Chance Rain Showers
- 44
- 68
Partly Sunny
- 51
- 74
Chance Rain Showers
Today 8 May Monroe
Mostly sunny and warmer. Near steady temperature in the upper 60s. West Winds 10 to 15 Mph.
Tonight 8 May Monroe
Mostly cloudy. Warmer with Lows in the mid 40s. West Winds 5 to 10 Mph.
Big Sandy Lake Temperature Statistics
May Temperature
Sparta, Sparta / Fort McCoy Airport (2.5 miles)
Lowest 6 May, 2026
25.5 °FAverage May
45.8 °FHighest 3 May, 2026
70.9 °F
Climate (2021–Present)
Sparta, Sparta / Fort McCoy Airport (2.5 miles)
Average Low 2021–2026
34.9 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
58.2 °F