5-day weather forecast for Williamsport, Pennsylvania

Weather changeability for Williamsport, Pennsylvania

Temperature Last Month Last Year
Average change in high temperature day-to-day 4.7° 6.0°
Average change in low temperature day-to-day 8.1° 7.2°
Precipitation Last Month Last Year
Chance of dry day after a precip day 42% 50%
Chance of precip day after a dry day 73% 36%

Weather forecast accuracy for Williamsport, Pennsylvania

Last Month
Foreca   82.50%
The Weather Channel   79.17%
AccuWeather   78.33%
Weather Underground   76.67%
NWS Digital Forecast   74.17%
Dark Sky (forecast.io)   73.33%
World Weather Online   72.78%
MeteoGroup   70.28%
Persistence   42.50%
Last Year
The Weather Channel   74.60%
Weather Underground   74.48%
AccuWeather   73.59%
Foreca   73.22%
MeteoGroup   72.36%
Dark Sky (forecast.io)   68.57%
NWS Digital Forecast   67.49%
World Weather Online   55.76%
Persistence   42.55%

ForecastAdvisor Fact

26.7% of Persistence's high temperature forecasts for Williamsport were off by more than 10 degrees last month.