Weather forecast accuracy details for Grantsdale, Montana

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
Microsoft   72.22% 68.89% 90.00% 90.00% 80.28%
Foreca/Vaisala   76.34% 59.14% 90.32% 90.32% 79.03%
AccuWeather   70.11% 71.26% 88.51% 86.21% 79.02%
The Weather Channel   70.97% 66.67% 82.80% 82.80% 75.81%
Weatherbit   62.37% 49.46% 91.40% 91.40% 73.66%
AerisWeather   67.74% 48.39% 86.02% 86.02% 72.04%
OpenWeather   53.76% 39.78% 89.25% 89.25% 68.01%
NWS Digital Forecast   62.37% 49.46% 79.57% 79.57% 67.74%
Wetter   45.83% 27.78% 80.56% 80.56% 58.68%
Pirate Weather   36.67% 18.89% 87.78% 87.78% 57.78%
World Weather Online   30.11% 17.20% 79.57% 79.57% 51.61%
Persistence   27.54% 37.14% 62.32% 62.32% 47.33%

Weather Forecast Accuracy Data Last Year (2022)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   66.67% 63.92% 84.89% 84.89% 75.09%
AccuWeather   67.78% 62.58% 81.66% 79.20% 72.80%
Microsoft   64.38% 65.57% 79.12% 79.12% 72.05%
Foreca/Vaisala   61.54% 54.95% 81.59% 81.59% 69.92%
AerisWeather   60.53% 56.04% 80.68% 80.77% 69.51%
NWS Digital Forecast   62.28% 50.97% 73.96% 73.96% 65.29%
Wetter   53.86% 44.07% 77.97% 77.97% 63.47%
OpenWeather   50.82% 38.46% 75.27% 75.27% 59.96%
Weatherbit   36.42% 35.69% 79.36% 79.36% 57.71%
World Weather Online   40.02% 20.42% 68.77% 68.77% 49.50%
Persistence   30.93% 30.88% 59.21% 59.21% 45.05%

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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