Weather forecast accuracy details for Trenton, New Jersey

These are the one- to three-day out accuracy percentages for high temperature, low temperature, icon forecast precipitation (both rain and snow), and text forecast precipitation (both rain and snow). Temperature accuracy is the percentage of forecasts within three degrees. Precipitation accuracy is the percentage of correct forecasts. The forecasts are collected in the evening.

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Weather Forecast Accuracy Data Last Month (September)

Provider High Temp Low Temp Icon Precip Text Precip Overall
AccuWeather   86.67% 91.11% 85.56% 85.56% 87.22%
The Weather Channel   85.56% 91.11% 84.44% 84.44% 86.39%
Weather Underground   84.44% 92.22% 83.33% 83.33% 85.83%
NWS Digital Forecast   84.44% 85.56% 82.22% 82.22% 83.61%
Foreca/Vaisala   82.22% 83.33% 83.33% 83.33% 83.06%
AerisWeather   83.33% 81.11% 83.33% 83.33% 82.78%
Wetter   82.22% 48.89% 80.00% 80.00% 72.78%
OpenWeather   84.44% 43.33% 77.78% 77.78% 70.83%
World Weather Online   43.33% 67.78% 75.56% 75.56% 65.56%
Weather News   74.44% 71.11% 70.00% 0.00% 53.89%
Persistence   39.71% 29.58% 50.00% 50.00% 42.32%

Weather Forecast Accuracy Data Last Year (2020)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   83.10% 80.94% 83.71% 83.71% 82.86%
Weather Underground   83.10% 80.94% 82.03% 82.03% 82.02%
AccuWeather   83.00% 77.93% 79.80% 79.14% 79.97%
Foreca/Vaisala   81.88% 77.46% 79.24% 79.24% 79.45%
AerisWeather   77.00% 72.96% 76.16% 76.16% 75.57%
NWS Digital Forecast   78.29% 74.10% 73.94% 73.94% 75.06%
World Weather Online   67.23% 48.02% 74.88% 74.88% 66.26%
OpenWeather   61.97% 45.16% 78.77% 78.77% 66.17%
Wetter   67.80% 38.43% 77.25% 77.25% 65.18%
Weather News   69.53% 62.02% 63.21% 0.00% 48.69%
Persistence   33.00% 26.73% 55.45% 55.45% 42.66%

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The data here is calculated from forecasts and observations collected and analyzed by ForecastWatch. If you would like more information about the methods, scientific approach, and the quality controls employed to ensure the data and analyses are of the highest quality, please read this overview.

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