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
Weather Underground   80.65% 65.59% 94.62% 94.62% 83.87%
AccuWeather   83.87% 62.37% 93.55% 93.55% 83.33%
The Weather Channel   80.65% 62.37% 93.55% 93.55% 82.53%
Foreca/Vaisala   81.72% 56.99% 94.62% 94.62% 81.99%
NWS Digital Forecast   79.57% 55.91% 94.62% 94.62% 81.18%
AerisWeather   80.65% 52.69% 89.25% 89.25% 77.96%
OpenWeather   73.12% 37.63% 90.32% 90.32% 72.85%
Weather News   74.19% 44.09% 84.95% 84.95% 72.04%
Dark Sky   41.94% 55.91% 90.32% 90.32% 69.62%
Wetter   67.74% 38.71% 86.02% 86.02% 69.62%
World Weather Online   56.99% 32.26% 87.10% 87.10% 65.86%
Weatherbit   68.60% 22.35% 83.72% 83.72% 64.60%
Persistence   33.33% 17.57% 51.39% 51.39% 38.42%

Weather Forecast Accuracy Data Last Year (2022)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   83.52% 67.03% 88.55% 88.55% 81.91%
Weather Underground   83.70% 67.95% 87.45% 87.45% 81.64%
AccuWeather   83.94% 65.92% 86.67% 84.40% 80.23%
Foreca/Vaisala   79.67% 65.20% 85.81% 85.81% 79.12%
AerisWeather   74.08% 58.24% 86.36% 86.36% 76.26%
NWS Digital Forecast   78.82% 60.91% 81.06% 81.06% 75.47%
Dark Sky   47.16% 62.73% 86.45% 86.45% 70.70%
Weather News   70.25% 49.68% 80.35% 80.35% 70.16%
OpenWeather   69.87% 44.32% 81.32% 81.32% 69.21%
Wetter   68.04% 35.62% 80.77% 80.77% 66.30%
Weatherbit   68.56% 29.11% 81.68% 81.68% 65.26%
World Weather Online   56.50% 47.99% 76.56% 76.56% 64.40%
Persistence   30.71% 22.51% 48.93% 48.93% 37.77%

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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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