Grass Lake Weather Forecast
- 45
- 68
Rain Showers Likely
- 46
- 65
Mostly Sunny
- 47
- 71
Chance Rain Showers
- 47
- 69
Slight Chance Thunderstorms
- 48
- 70
Slight Chance Rain Showers
- 51
- 71
Partly Sunny
Today 29 May Southwestern St. Lawrence
Mostly cloudy. Showers likely with a slight chance of Thunderstorms this afternoon. Highs in the upper 60s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph, increasing to 40 Mph this afternoon. Chance of rain 70 percent.
Tonight 29 May Southwestern St. Lawrence
Mostly cloudy with a 50 percent chance of Showers. Lows in the mid 40s. North Winds 10 to 15 Mph with Gusts up to 35 Mph.
Grass Lake Temperature Statistics
May Temperature
Fort Drum / Wheeler-Sack U. S. Army Airfield (19.9 miles)
Lowest 11 May, 2026
34.3 °FAverage May
54.5 °FHighest 18 May, 2026
88.9 °F
Climate (2021–Present)
Fort Drum / Wheeler-Sack U. S. Army Airfield (19.9 miles)
Average Low 2021–2026
39.3 °FAverage 2021–2026
47.8 °FAverage High 2021–2026
55.9 °F