Weather forecast accuracy details for Decatur, Alabama

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 (October)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Foreca/Vaisala   83.87% 61.29% 97.85% 97.85% 85.22%
The Weather Channel   84.95% 66.67% 93.55% 93.55% 84.68%
Weather Underground   84.95% 67.74% 92.47% 92.47% 84.41%
NWS Digital Forecast   76.34% 52.69% 97.85% 97.85% 81.18%
AerisWeather   77.42% 56.99% 94.62% 94.62% 80.91%
AccuWeather   71.74% 66.67% 91.30% 91.30% 80.25%
OpenWeather   78.49% 41.94% 93.55% 93.55% 76.88%
Dark Sky   66.67% 45.16% 93.55% 93.55% 74.73%
Wetter   78.49% 33.33% 91.40% 91.40% 73.66%
Weatherbit   76.34% 20.43% 89.25% 89.25% 68.82%
Weather News   65.59% 32.26% 88.17% 88.17% 68.55%
World Weather Online   39.78% 47.31% 90.32% 90.32% 66.94%
Persistence   33.80% 28.17% 70.42% 70.42% 50.70%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   80.34% 77.43% 83.61% 83.61% 81.25%
Weather Underground   80.52% 77.53% 82.30% 82.30% 80.66%
Foreca/Vaisala   77.62% 73.69% 82.52% 83.15% 79.24%
AccuWeather   81.16% 74.61% 80.30% 77.94% 78.50%
AerisWeather   75.12% 71.83% 80.56% 80.56% 77.02%
Dark Sky   75.28% 64.98% 83.05% 83.05% 76.59%
NWS Digital Forecast   74.95% 71.52% 77.05% 77.05% 75.14%
Wetter   64.98% 52.15% 77.90% 77.90% 68.24%
OpenWeather   60.30% 51.31% 77.43% 77.43% 66.62%
World Weather Online   59.36% 54.49% 73.41% 73.41% 65.17%
Weatherbit   55.04% 52.56% 76.36% 76.36% 65.08%
Weather News   51.40% 54.87% 63.86% 63.86% 58.50%
Persistence   37.03% 32.27% 56.03% 56.03% 45.34%

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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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