Weather forecast accuracy details for Corydon, 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 (March)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   58.06% 78.26% 95.70% 94.62% 81.66%
The Weather Channel   52.69% 80.65% 93.55% 93.55% 80.11%
Foreca/Vaisala   53.76% 74.19% 94.62% 94.62% 79.30%
AccuWeather   57.78% 72.22% 93.33% 93.33% 79.17%
Weatherbit   50.54% 76.34% 90.32% 91.40% 77.15%
AerisWeather   50.54% 65.59% 91.40% 91.40% 74.73%
Open-Meteo   50.54% 54.84% 92.47% 92.47% 72.58%
NWS Digital Forecast   50.54% 74.19% 79.57% 79.57% 70.97%
World Weather Online   40.86% 43.01% 91.40% 91.40% 66.67%
Pirate Weather   52.69% 22.58% 91.40% 91.40% 64.52%
OpenWeather   34.41% 30.11% 94.62% 94.62% 63.44%
Wetter   40.86% 54.84% 73.12% 73.12% 60.48%
Persistence   14.08% 15.28% 64.79% 64.79% 39.73%

Weather Forecast Accuracy Data Last Year (2023)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   77.50% 79.61% 84.34% 84.34% 81.45%
Microsoft   77.05% 78.66% 83.80% 83.80% 80.83%
Foreca/Vaisala   74.01% 76.31% 82.69% 82.69% 78.93%
AccuWeather   76.26% 77.33% 79.75% 79.37% 78.18%
AerisWeather   71.99% 75.67% 81.50% 81.50% 77.67%
Weatherbit   69.31% 75.00% 79.91% 79.72% 75.98%
NWS Digital Forecast   72.47% 76.09% 70.78% 70.78% 72.53%
Wetter   57.85% 59.50% 81.32% 81.32% 70.00%
Pirate Weather   56.26% 39.69% 78.15% 78.15% 63.06%
World Weather Online   42.75% 60.81% 71.46% 71.46% 61.62%
OpenWeather   47.66% 44.54% 75.73% 75.73% 60.91%
Persistence   31.47% 29.53% 61.85% 61.85% 46.18%

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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