Weather forecast accuracy details for Willimantic, Connecticut

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 (December)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   82.22% 66.67% 84.44% 84.44% 79.44%
Foreca/Vaisala   80.00% 68.89% 84.44% 84.44% 79.44%
AccuWeather   80.46% 70.11% 72.41% 72.41% 73.85%
Weather Underground   82.22% 67.78% 72.22% 72.22% 73.61%
Dark Sky   54.44% 60.00% 87.78% 87.78% 72.50%
AerisWeather   70.11% 63.22% 78.16% 78.16% 72.41%
OpenWeather   71.11% 62.22% 76.67% 76.67% 71.67%
NWS Digital Forecast   77.78% 56.67% 70.00% 70.00% 68.61%
World Weather Online   73.33% 44.44% 74.44% 74.44% 66.67%
Weatherbit   69.32% 35.96% 72.73% 72.73% 62.68%
Wetter   67.78% 31.11% 66.67% 66.67% 58.06%
Weather News   65.56% 38.89% 53.33% 53.33% 52.78%
Persistence   17.91% 24.64% 53.73% 53.73% 37.50%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   81.11% 70.00% 85.37% 85.37% 80.46%
Weather Underground   81.11% 70.09% 83.15% 83.15% 79.38%
AccuWeather   81.27% 68.81% 82.30% 80.62% 78.25%
Foreca/Vaisala   78.33% 68.80% 81.72% 81.48% 77.58%
AerisWeather   76.42% 62.77% 81.62% 81.62% 75.60%
NWS Digital Forecast   79.80% 64.34% 76.47% 76.47% 74.27%
Dark Sky   44.91% 66.67% 83.61% 83.61% 69.70%
OpenWeather   65.74% 47.78% 78.43% 78.43% 67.59%
World Weather Online   64.44% 48.98% 73.61% 73.61% 65.16%
Weatherbit   58.86% 45.54% 77.33% 77.33% 64.77%
Wetter   63.80% 39.54% 77.59% 77.59% 64.63%
Weather News   67.31% 48.70% 67.41% 67.41% 62.71%
Persistence   31.78% 27.76% 54.82% 54.82% 42.30%

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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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