5-day weather forecast for Cheltenham, Pennsylvania

Weather changeability for Philadelphia, Pennsylvania

Temperature Last Month Last Year
Average change in high temperature day-to-day 6.9° 6.2°
Average change in low temperature day-to-day 6.9° 6.8°
Precipitation Last Month Last Year
Chance of dry day after a precip day 70% 61%
Chance of precip day after a dry day 32% 28%

Weather forecast accuracy for Philadelphia, Pennsylvania

Last Month
Weather Underground   83.91%
The Weather Channel   83.89%
Foreca   82.22%
MeteoGroup   80.56%
AccuWeather   78.89%
NWS Digital Forecast   71.94%
Dark Sky (forecast.io)   71.11%
World Weather Online   66.39%
Persistence   37.93%
Last Year
The Weather Channel   78.05%
Weather Underground   77.58%
AccuWeather   77.47%
Foreca   76.48%
MeteoGroup   73.60%
Dark Sky (forecast.io)   72.78%
NWS Digital Forecast   70.43%
World Weather Online   62.80%
Persistence   44.45%

ForecastAdvisor Fact

3.3% of MeteoGroup's high temperature forecasts for Philadelphia were off by more than 10 degrees last month.