Weather forecast accuracy details for Des Moines, 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.

Click on the headers to sort by that column.

Weather Forecast Accuracy Data Last Month (December)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   66.67% 75.27% 91.40% 91.40% 81.18%
Weather Underground   66.67% 75.27% 83.87% 83.87% 77.42%
AccuWeather   62.37% 72.04% 86.02% 82.80% 75.81%
Foreca/Vaisala   53.76% 63.44% 92.47% 92.47% 75.54%
AerisWeather   56.99% 60.22% 82.80% 83.87% 70.97%
NWS Digital Forecast   58.06% 69.89% 76.34% 76.34% 70.16%
Wetter   63.44% 47.31% 84.95% 81.72% 69.35%
Dark Sky   58.06% 54.84% 79.57% 79.57% 68.01%
Weatherbit   54.95% 35.16% 90.11% 90.11% 67.58%
World Weather Online   35.48% 52.69% 88.17% 88.17% 66.13%
OpenWeather   46.24% 35.48% 90.32% 90.32% 65.59%
Weather News   44.09% 48.39% 79.57% 79.57% 62.90%
Persistence   17.14% 15.07% 50.00% 50.00% 33.05%

Weather Forecast Accuracy Data Last Year (2022)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   71.87% 76.16% 87.76% 87.76% 80.89%
AccuWeather   70.09% 77.04% 86.89% 84.72% 79.69%
Weather Underground   71.69% 76.71% 84.57% 84.57% 79.38%
Foreca/Vaisala   62.36% 73.26% 85.44% 85.44% 76.63%
AerisWeather   65.39% 71.14% 84.66% 84.84% 76.51%
Dark Sky   64.84% 69.77% 85.21% 85.21% 76.26%
Wetter   64.20% 65.30% 82.74% 80.37% 73.15%
NWS Digital Forecast   63.70% 70.19% 77.81% 77.81% 72.38%
Weather News   54.95% 58.24% 82.88% 82.88% 69.73%
World Weather Online   39.93% 55.77% 80.49% 80.49% 64.17%
Weatherbit   54.17% 36.91% 81.54% 81.54% 63.54%
OpenWeather   42.65% 34.61% 83.74% 83.74% 61.19%
Persistence   22.85% 28.09% 56.46% 56.46% 40.96%

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.

Please contact us with whatever custom needs you may have. We would love to help!