Weather forecast accuracy details for Calmar, 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 (February)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   71.62% 66.67% 95.95% 94.59% 82.21%
The Weather Channel   60.00% 52.00% 93.33% 93.33% 74.67%
Foreca/Vaisala   62.67% 54.67% 89.33% 89.33% 74.00%
AccuWeather   60.29% 64.18% 83.82% 83.82% 73.03%
Weatherbit   61.33% 56.00% 81.33% 81.33% 70.00%
NWS Digital Forecast   69.33% 41.33% 81.33% 81.33% 68.33%
OpenWeather   64.00% 34.67% 86.67% 86.67% 68.00%
Open-Meteo   68.00% 33.33% 85.33% 85.33% 68.00%
AerisWeather   53.33% 52.00% 80.00% 80.00% 66.33%
Pirate Weather   62.67% 17.33% 92.00% 92.00% 66.00%
Wetter   42.67% 36.00% 86.67% 89.33% 63.67%
World Weather Online   54.67% 32.00% 84.00% 84.00% 63.67%
Persistence   12.73% 22.81% 80.00% 80.00% 48.88%

Weather Forecast Accuracy Data Last Year (2023)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   77.53% 74.86% 82.37% 82.37% 79.28%
Microsoft   74.78% 74.33% 83.49% 83.49% 79.02%
AccuWeather   75.53% 69.25% 79.12% 78.17% 75.52%
Foreca/Vaisala   71.92% 67.68% 79.61% 79.61% 74.71%
AerisWeather   70.63% 66.48% 80.53% 80.53% 74.54%
Weatherbit   72.33% 64.45% 74.74% 74.56% 71.52%
NWS Digital Forecast   68.37% 67.69% 71.19% 71.19% 69.61%
Wetter   54.70% 54.97% 80.17% 80.62% 67.61%
Pirate Weather   55.68% 33.70% 79.65% 79.65% 62.17%
OpenWeather   47.33% 45.12% 73.55% 73.55% 59.89%
World Weather Online   41.71% 50.19% 71.18% 71.18% 58.57%
Persistence   28.86% 26.77% 59.42% 59.42% 43.62%

If this data feeds your inner weather geek, you'll probably be interested in the amazing amount of weather data available from ForecastWatch. Likewise, if you're looking to assess your own forecasting accuracy or would like to make more informed decisions about a weather provider you're considering or already use, we can provide data to help you.

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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