Weather forecast accuracy details for Grand Junction, 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
The Weather Channel   75.27% 60.22% 89.25% 89.25% 78.49%
Weather Underground   74.19% 61.29% 83.87% 83.87% 75.81%
AccuWeather   72.04% 54.84% 82.80% 82.80% 73.12%
Wetter   64.52% 48.39% 80.65% 83.87% 69.35%
AerisWeather   66.67% 47.31% 79.57% 79.57% 68.28%
Foreca/Vaisala   47.31% 55.91% 82.80% 82.80% 67.20%
Weather News   61.29% 51.61% 77.42% 77.42% 66.94%
OpenWeather   73.12% 26.88% 82.80% 82.80% 66.40%
NWS Digital Forecast   61.29% 54.84% 74.19% 74.19% 66.13%
Dark Sky   43.01% 51.61% 80.65% 80.65% 63.98%
World Weather Online   55.91% 29.03% 80.65% 80.65% 61.56%
Weatherbit   48.39% 22.58% 79.57% 79.57% 57.53%
Persistence   44.44% 24.32% 68.06% 68.06% 51.22%

Weather Forecast Accuracy Data Last Year (2022)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   83.24% 73.08% 89.29% 89.29% 83.72%
Weather Underground   83.24% 73.53% 87.91% 87.91% 83.15%
AccuWeather   82.27% 70.94% 81.56% 84.96% 79.93%
AerisWeather   80.13% 66.48% 86.17% 86.17% 79.74%
NWS Digital Forecast   79.13% 67.68% 81.72% 81.72% 77.56%
Foreca/Vaisala   72.07% 63.55% 86.90% 86.90% 77.36%
Wetter   70.35% 69.69% 81.78% 85.17% 76.75%
Weather News   69.42% 64.65% 84.94% 84.94% 75.99%
Dark Sky   54.17% 60.68% 87.90% 87.90% 72.66%
OpenWeather   74.73% 31.04% 81.87% 81.87% 67.38%
World Weather Online   68.50% 38.84% 80.07% 80.07% 66.87%
Weatherbit   61.04% 33.12% 86.34% 86.34% 66.71%
Persistence   42.53% 33.41% 69.65% 69.65% 53.81%

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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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