Weather forecast accuracy details for Charles City, Iowa

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 (July)

Provider High Temp Low Temp Icon Precip Text Precip Overall
AccuWeather   85.56% 75.56% 78.89% 78.89% 79.72%
The Weather Channel   82.80% 70.97% 81.72% 81.72% 79.30%
Foreca/Vaisala   83.87% 69.89% 81.72% 81.72% 79.30%
Weather Underground   82.80% 70.97% 80.65% 80.65% 78.76%
AerisWeather   88.17% 66.67% 74.19% 74.19% 75.81%
Weather News   74.19% 60.22% 78.49% 78.49% 72.85%
Dark Sky   79.57% 50.54% 77.42% 77.42% 71.24%
Wetter   59.14% 62.37% 76.34% 76.34% 68.55%
Weatherbit   75.00% 39.13% 75.00% 75.00% 66.03%
NWS Digital Forecast   89.25% 66.67% 53.76% 53.76% 65.86%
World Weather Online   61.29% 69.89% 60.22% 60.22% 62.90%
OpenWeather   54.84% 53.76% 63.44% 63.44% 58.87%
Persistence   44.93% 52.94% 47.83% 47.83% 48.38%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   75.44% 65.19% 87.63% 87.63% 78.97%
Foreca/Vaisala   68.88% 62.33% 91.43% 90.58% 78.30%
Weather Underground   75.25% 64.73% 86.06% 86.06% 78.02%
AccuWeather   74.23% 65.04% 84.56% 84.03% 76.97%
AerisWeather   67.69% 60.93% 85.74% 85.74% 75.02%
NWS Digital Forecast   67.26% 59.24% 76.66% 76.66% 69.95%
Dark Sky   61.50% 47.00% 84.95% 84.95% 69.60%
Weatherbit   54.69% 40.98% 77.95% 77.95% 62.89%
Wetter   48.48% 39.80% 80.06% 80.06% 62.10%
OpenWeather   48.94% 38.32% 78.21% 78.21% 60.92%
Weather News   48.11% 48.01% 73.68% 73.68% 60.87%
World Weather Online   41.57% 41.30% 73.80% 73.80% 57.62%
Persistence   31.73% 26.21% 63.10% 63.10% 46.03%

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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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