Weather forecast accuracy details for Denver, Colorado

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 (October)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   87.10% 81.72% 96.77% 96.77% 90.59%
The Weather Channel   86.02% 81.72% 96.77% 96.77% 90.32%
Foreca/Vaisala   89.25% 75.27% 96.77% 96.77% 89.52%
AccuWeather   90.22% 65.59% 94.57% 92.39% 85.69%
Weather News   84.95% 74.19% 91.40% 91.40% 85.48%
AerisWeather   87.10% 58.06% 95.70% 95.70% 84.14%
Dark Sky   84.78% 66.30% 92.39% 92.39% 83.97%
Wetter   81.43% 68.06% 87.14% 90.00% 81.66%
NWS Digital Forecast   89.25% 60.22% 83.87% 83.87% 79.30%
World Weather Online   73.12% 52.69% 82.80% 82.80% 72.85%
Weatherbit   64.52% 38.71% 92.47% 92.47% 72.04%
OpenWeather   79.57% 49.46% 78.49% 78.49% 71.51%
Persistence   25.71% 36.23% 72.86% 72.86% 51.92%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   74.93% 71.12% 87.56% 87.56% 80.29%
The Weather Channel   74.56% 70.66% 87.19% 87.19% 79.90%
Foreca/Vaisala   72.42% 65.27% 87.74% 87.19% 78.16%
AccuWeather   75.12% 68.20% 84.00% 81.50% 77.21%
AerisWeather   69.93% 62.20% 82.77% 82.77% 74.42%
Dark Sky   67.50% 61.75% 83.75% 83.75% 74.19%
Weather News   59.98% 64.25% 81.24% 81.24% 71.68%
Wetter   55.81% 54.10% 86.00% 86.29% 70.55%
NWS Digital Forecast   71.03% 61.90% 72.41% 72.41% 69.44%
Weatherbit   57.18% 45.49% 85.35% 85.35% 68.34%
OpenWeather   60.72% 47.82% 78.09% 78.09% 66.18%
World Weather Online   54.66% 53.22% 76.77% 76.77% 65.36%
Persistence   24.40% 31.16% 66.09% 66.09% 46.93%

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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