Weather forecast accuracy details for Des Plaines, 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.

Click on the headers to sort by that column.

Weather Forecast Accuracy Data Last Month (March)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   74.12% 80.23% 96.47% 96.47% 86.82%
The Weather Channel   74.71% 82.76% 91.95% 91.95% 85.34%
Weatherbit   65.12% 79.07% 93.10% 93.10% 82.60%
Foreca/Vaisala   60.92% 77.01% 95.40% 95.40% 82.18%
AerisWeather   59.77% 78.16% 93.10% 91.95% 80.75%
AccuWeather   65.52% 77.01% 87.36% 86.21% 79.02%
NWS Digital Forecast   67.82% 78.16% 79.31% 79.31% 76.15%
Open-Meteo   58.62% 57.47% 85.06% 85.06% 71.55%
OpenWeather   58.62% 28.74% 87.36% 87.36% 65.52%
Wetter.com   45.98% 60.92% 74.71% 74.71% 64.08%
Pirate Weather   51.72% 26.44% 89.66% 86.21% 63.51%
World Weather Online   42.53% 54.02% 77.01% 77.01% 62.64%
Persistence   24.59% 29.51% 52.46% 52.46% 39.75%

Weather Forecast Accuracy Data Last Year (2024)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   85.73% 84.88% 85.81% 85.81% 85.56%
Microsoft   81.00% 82.68% 84.23% 86.35% 83.57%
Foreca/Vaisala   76.71% 83.57% 85.15% 85.15% 82.65%
AccuWeather   81.90% 84.37% 82.01% 81.16% 82.36%
Weatherbit   82.27% 79.05% 82.56% 82.75% 81.66%
AerisWeather   79.25% 79.62% 82.45% 82.35% 80.92%
NWS Digital Forecast   79.56% 79.36% 76.28% 76.28% 77.87%
Open-Meteo   73.43% 59.81% 81.79% 81.79% 74.21%
Pirate Weather   77.18% 42.25% 83.85% 83.85% 71.78%
OpenWeather   72.11% 47.42% 80.67% 80.67% 70.22%
World Weather Online   64.98% 59.81% 77.22% 77.22% 69.81%
Wetter.com   57.93% 66.76% 73.58% 73.20% 67.87%
Persistence   31.92% 30.30% 56.63% 56.63% 43.87%

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!