5-day weather forecast for Stewardson, Illinois

Weather forecast accuracy details for Lerna, 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
Provider High Temp Low Temp Icon Precip Text Precip Overall
National Weather Service   50.57% 72.41% 79.31% 79.31% 70.40%
The Weather Channel   57.47% 66.67% 73.56% 73.56% 67.82%
Intellicast   57.47% 66.67% 73.56% 73.56% 67.82%
Weather Underground   59.77% 62.07% 75.86% 71.26% 67.24%
NWS Digital Forecast   49.43% 70.11% 73.56% 73.56% 66.67%
AccuWeather   42.53% 65.52% 73.56% 71.26% 63.22%
CustomWeather   36.78% 54.02% 79.31% 75.86% 61.49%
World Weather Online   29.76% 23.81% 79.76% 79.76% 53.27%
Persistence   15.48% 21.43% 51.19% 51.19% 34.82%
Weather Forecast Accuracy Data Last Year
Provider High Temp Low Temp Icon Precip Text Precip Overall
National Weather Service   62.92% 61.51% 80.78% 79.41% 71.16%
The Weather Channel   65.84% 61.24% 75.12% 75.12% 69.33%
Intellicast   65.65% 61.16% 75.00% 75.00% 69.20%
NWS Digital Forecast   64.09% 61.01% 71.91% 71.81% 67.21%
AccuWeather   56.06% 56.63% 76.92% 77.56% 66.79%
CustomWeather   56.10% 55.65% 76.38% 75.79% 65.98%
Persistence   29.34% 25.39% 58.57% 58.57% 42.97%
 
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