Weather forecast accuracy details for Anchorage, Alaska

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 (July)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   74.44% 87.78% 93.33% 93.33% 87.22%
Weather Underground   74.44% 87.78% 88.89% 88.89% 85.00%
AccuWeather   77.01% 90.80% 81.61% 81.61% 82.76%
Foreca/Vaisala   55.56% 87.78% 88.89% 88.89% 80.28%
Dark Sky   67.78% 65.56% 82.22% 82.22% 74.44%
Weather News   63.33% 75.56% 78.89% 78.89% 74.17%
AerisWeather   53.33% 78.89% 81.11% 81.11% 73.61%
NWS Digital Forecast   31.46% 76.67% 83.15% 83.15% 68.60%
OpenWeather   15.56% 76.67% 85.56% 85.56% 65.83%
Persistence   43.59% 60.98% 70.51% 70.51% 61.40%
Weatherbit   21.35% 34.83% 89.89% 89.89% 58.99%
World Weather Online   8.89% 64.44% 81.11% 81.11% 58.89%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   75.21% 66.39% 80.00% 80.00% 75.40%
The Weather Channel   75.02% 66.30% 80.09% 80.09% 75.38%
Foreca/Vaisala   75.02% 61.75% 77.53% 76.39% 72.67%
AccuWeather   76.53% 64.62% 74.43% 74.81% 72.60%
Dark Sky   53.02% 49.68% 80.19% 80.19% 65.77%
Weather News   63.32% 58.22% 69.63% 69.63% 65.20%
NWS Digital Forecast   59.07% 62.05% 67.81% 67.81% 64.18%
AerisWeather   67.13% 55.87% 66.30% 66.30% 63.90%
OpenWeather   37.60% 54.50% 72.96% 72.96% 59.51%
Weatherbit   34.82% 42.42% 67.87% 67.87% 53.25%
World Weather Online   27.21% 42.25% 68.15% 68.15% 51.44%
Persistence   42.19% 36.08% 54.93% 54.93% 47.03%

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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