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 (December)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   63.44% 73.12% 95.70% 95.70% 81.99%
The Weather Channel   63.44% 72.04% 93.55% 93.55% 80.65%
AccuWeather   59.14% 66.67% 91.40% 91.40% 77.15%
Foreca/Vaisala   64.52% 62.37% 88.17% 88.17% 75.81%
NWS Digital Forecast   55.91% 65.59% 87.10% 87.10% 73.92%
Dark Sky   54.84% 48.39% 95.70% 95.70% 73.66%
AerisWeather   45.16% 59.14% 89.25% 89.25% 70.70%
Weather News   52.69% 55.91% 84.95% 84.95% 69.62%
World Weather Online   44.09% 41.94% 88.17% 88.17% 65.59%
Weatherbit   52.69% 35.48% 86.02% 86.02% 65.05%
Wetter   40.86% 30.11% 92.47% 92.47% 63.98%
OpenWeather   41.94% 34.41% 84.95% 84.95% 61.56%
Persistence   23.61% 17.57% 70.83% 70.83% 45.71%

Weather Forecast Accuracy Data Last Year (2022)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   77.78% 76.86% 88.71% 88.71% 83.01%
The Weather Channel   77.32% 75.67% 89.16% 89.16% 82.83%
AccuWeather   74.95% 67.50% 87.92% 84.73% 78.78%
Foreca/Vaisala   73.55% 68.96% 85.49% 85.49% 78.37%
AerisWeather   68.69% 64.92% 82.92% 82.92% 74.86%
Dark Sky   70.22% 51.56% 85.20% 85.20% 73.05%
Weather News   65.38% 62.62% 80.76% 80.76% 72.38%
NWS Digital Forecast   66.30% 66.57% 71.10% 71.10% 68.77%
Wetter   63.64% 42.99% 83.05% 83.05% 68.18%
Weatherbit   64.76% 38.84% 83.49% 83.49% 67.64%
OpenWeather   65.66% 40.77% 77.50% 77.50% 65.36%
World Weather Online   44.63% 60.24% 73.09% 73.09% 62.76%
Persistence   26.05% 28.37% 63.08% 63.08% 45.14%

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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