Weather forecast accuracy details for Grand Marais, Minnesota

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   75.56% 55.56% 73.33% 73.33% 69.44%
Foreca/Vaisala   68.89% 56.67% 75.56% 75.56% 69.17%
AccuWeather   67.82% 58.62% 72.41% 72.41% 67.82%
Weather Underground   75.56% 55.56% 67.78% 67.78% 66.67%
World Weather Online   60.00% 32.22% 76.67% 76.67% 61.39%
OpenWeather   54.44% 32.22% 77.78% 77.78% 60.56%
AerisWeather   58.62% 25.29% 74.71% 74.71% 58.33%
Dark Sky   51.11% 41.11% 67.78% 67.78% 56.94%
Weatherbit   60.92% 28.09% 68.97% 68.97% 56.74%
NWS Digital Forecast   44.44% 22.22% 64.44% 64.44% 48.89%
Wetter   17.78% 22.22% 54.44% 54.44% 37.22%
Persistence   19.05% 20.00% 49.21% 49.21% 34.37%
Weather News   32.22% 14.44% 40.00% 40.00% 31.67%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   71.20% 63.46% 83.85% 83.85% 75.59%
AccuWeather   69.63% 67.19% 82.95% 80.52% 75.07%
Weather Underground   71.39% 63.93% 82.34% 82.34% 75.00%
Foreca/Vaisala   70.73% 63.64% 83.00% 82.25% 74.91%
Dark Sky   65.06% 47.78% 80.17% 80.17% 68.30%
AerisWeather   53.31% 53.03% 82.39% 82.39% 67.78%
OpenWeather   62.04% 45.23% 77.24% 77.24% 65.44%
World Weather Online   58.83% 45.70% 71.39% 71.39% 61.83%
Weatherbit   56.51% 42.08% 74.23% 74.23% 61.77%
NWS Digital Forecast   44.92% 48.53% 73.41% 73.41% 60.07%
Wetter   31.44% 36.45% 78.09% 78.09% 56.02%
Weather News   35.69% 34.47% 70.35% 70.35% 52.71%
Persistence   34.28% 29.40% 62.83% 62.83% 47.34%

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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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