Williamsport weather
Best months for weather: May–Oct. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Williamsport, Pennsylvania, United States.
Best Time to Visit
Peak season May–OctOff season Dec–Mar
Williamsport weather by month
When is the best time to visit Williamsport?
Based on weather alone, the best time to visit Williamsport is May–Oct, according to NASA's 2001–2025 climate averages. Dec–Mar tends to be the least pleasant. Average highs run from 0°C (32°F) in January to 29°C (84°F) in July.
What is the rainiest month in Williamsport?
July is the wettest month, with about 117 mm (4.6 in) of rain on average. February is the driest, with about 65 mm (2.6 in).
What is the hottest month in Williamsport?
July is the warmest, with average highs of 29°C (84°F) and lows of 17°C (63°F). January is the coolest, with highs of 0°C (32°F) and lows of -8°C (18°F).
Does Williamsport have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is July at about 117 mm (4.6 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months