5-day weather forecast for Lyons, Illinois

Weather forecast accuracy details for Chicago, 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
Foreca   78.16% 67.82% 80.46% 80.46% 76.72%
Weather Underground   73.56% 60.92% 83.91% 83.91% 75.57%
The Weather Channel   78.89% 58.89% 82.22% 82.22% 75.56%
MeteoGroup   63.33% 68.89% 80.00% 81.11% 73.33%
AccuWeather   68.89% 50.00% 80.00% 86.67% 71.39%
National Weather Service   66.67% 62.07% 77.01% 75.86% 70.40%
WeatherBug   51.72% 55.68% 86.21% 86.21% 69.95%
CustomWeather   61.90% 46.43% 82.14% 82.14% 68.15%
Dark Sky (forecast.io)   47.78% 38.89% 80.00% 80.00% 61.67%
Persistence   16.28% 17.65% 55.81% 55.81% 36.39%
Weather Forecast Accuracy Data Last Year
Provider High Temp Low Temp Icon Precip Text Precip Overall
MeteoGroup   64.91% 74.66% 80.12% 80.12% 74.95%
The Weather Channel   69.48% 72.11% 78.81% 78.81% 74.81%
National Weather Service   62.17% 68.87% 77.83% 75.96% 71.21%
Foreca   58.78% 64.77% 80.47% 80.47% 71.12%
Weather Underground   61.81% 63.95% 79.59% 75.22% 70.14%
AccuWeather   60.74% 66.86% 75.22% 75.80% 69.66%
CustomWeather   61.13% 62.88% 75.80% 75.61% 68.85%
WeatherBug   48.18% 59.39% 79.84% 79.84% 66.81%
Persistence   26.86% 25.51% 59.10% 59.10% 42.64%
 
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