Weather forecast accuracy details for Bloomington, Illinois

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
The Weather Channel   86.21% 83.91% 84.44% 84.44% 84.75%
Dark Sky   78.16% 75.86% 87.78% 87.78% 82.39%
Weather Underground   86.21% 83.91% 77.78% 77.78% 81.42%
NWS Digital Forecast   82.76% 78.16% 82.22% 82.22% 81.34%
Foreca/Vaisala   79.31% 81.61% 80.00% 80.00% 80.23%
AccuWeather   87.21% 77.01% 77.53% 78.65% 80.10%
AerisWeather   81.61% 73.56% 80.00% 80.00% 78.79%
Wetter   81.61% 60.92% 78.89% 78.89% 75.08%
OpenWeather   82.76% 41.38% 84.44% 84.44% 73.26%
Weather News   68.97% 57.47% 77.78% 77.78% 70.50%
World Weather Online   50.57% 49.43% 84.44% 84.44% 67.22%
Weatherbit   68.24% 23.26% 77.27% 77.27% 61.51%
Persistence   29.23% 20.31% 63.24% 63.24% 44.00%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   80.22% 84.40% 83.94% 83.94% 83.12%
Weather Underground   80.59% 84.40% 82.36% 82.36% 82.43%
Foreca/Vaisala   76.32% 81.99% 81.94% 82.73% 80.74%
AccuWeather   77.56% 82.72% 78.41% 78.03% 79.18%
AerisWeather   76.26% 78.12% 80.26% 80.26% 78.72%
Dark Sky   74.65% 78.83% 80.13% 80.13% 78.44%
NWS Digital Forecast   76.64% 79.55% 74.93% 74.93% 76.51%
Wetter   55.06% 59.52% 75.58% 75.58% 66.43%
Weather News   65.99% 61.75% 65.52% 65.52% 64.69%
Weatherbit   50.95% 52.75% 74.14% 74.14% 63.00%
World Weather Online   49.68% 55.80% 72.14% 72.14% 62.44%
OpenWeather   55.62% 44.48% 72.89% 72.89% 61.47%
Persistence   36.46% 28.93% 60.08% 60.08% 46.39%

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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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