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 6.6° 6.0°
Average change in low temperature day-to-day 10.1° 6.9°
Precipitation Last Month Last Year
Chance of dry day after a precip day 35% 37%
Chance of precip day after a dry day 55% 47%

Weather forecast accuracy for Williamsport, Pennsylvania

Last Month
Foreca   70.66%
AccuWeather   67.79%
The Weather Channel   64.69%
MeteoGroup   63.79%
NWS Digital Forecast   63.00%
Dark Sky   62.98%
Weather Underground   61.28%
World Weather Online   59.51%
Persistence   40.86%
Last Year
The Weather Channel   76.23%
Foreca   75.65%
Weather Underground   75.43%
AccuWeather   75.08%
NWS Digital Forecast   71.89%
MeteoGroup   71.77%
Dark Sky   70.55%
World Weather Online   61.59%
Persistence   41.14%

ForecastAdvisor Fact

On average, Persistence's high temperature forecasts for Williamsport were off by 7.78 degrees last month.