Crystal Lake Weather Forecast
- 39
- 55
Rain Showers Likely
- 35
- 54
Partly Sunny
- 42
- 53
Rain Showers Likely
- 45
- 57
Chance Rain Showers
- 44
- 66
Rain Showers Likely
- 38
- 56
Slight Chance Rain Showers
Today 6 May Sullivan
Showers likely with a slight chance of Thunderstorms. Much cooler with Highs in the mid 50s. West Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.
Tonight 6 May Sullivan
Mostly cloudy. Much cooler with Lows in the upper 30s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.
Crystal Lake Temperature Statistics
May Temperature
Williamsport - Lycoming County Airport (14.3 miles)
Lowest 4 May, 2026
35.1 °FAverage May
51.1 °FHighest 4 May, 2026
75.9 °F
Climate (2021–Present)
Williamsport - Lycoming County Airport (14.3 miles)
Average Low 2021–2026
43.6 °FAverage 2021–2026
52.9 °FAverage High 2021–2026
63.2 °F