Best Time to Hike Long Trail
Month-by-month temperatures and rainfall for Long Trail, United States, based on 2-year climate normals.
Month-by-month weather on Long Trail
| Month | Avg high | Avg low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | -4.7°C / 24°F | -12.1°C / 10°F | 101 mm | 14 |
| February | -1.7°C / 29°F | -12.2°C / 10°F | 64 mm | 12 |
| March | 4.5°C / 40°F | -5.4°C / 22°F | 143 mm | 15 |
| April | 10°C / 50°F | -0.5°C / 31°F | 113 mm | 15 |
| May | 16.3°C / 61°F | 7.3°C / 45°F | 161 mm | 17 |
| June | 22°C / 72°F | 12.4°C / 54°F | 161 mm | 17 |
| July | 24.8°C / 77°F | 15.7°C / 60°F | 129 mm | 15 |
| August | 22.4°C / 72°F | 12.6°C / 55°F | 88 mm | 13 |
| September | 19.9°C / 68°F | 10°C / 50°F | 68 mm | 6 |
| October | 13°C / 55°F | 3.6°C / 38°F | 100 mm | 10 |
| November | 4.7°C / 40°F | -2.3°C / 28°F | 91 mm | 15 |
| December | -2.5°C / 28°F | -11.6°C / 11°F | 102 mm | 16 |
Highlighted rows are the recommended hiking window. Climate normals via Open-Meteo (2-year average). Mountain weather varies — always check a live forecast before you set off.
The best months to hike Long Trail are September. Expect daytime highs around 20°C (68°F) and nights near 10°C (50°F).
Pack flexible layers and a reliable rain shell — conditions can shift quickly in the mountains.
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