Weather forecast accuracy details for Hawaii National Park, Hawaii

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   100.00% 100.00% 91.40% 91.40% 95.70%
AccuWeather   97.78% 100.00% 90.00% 90.00% 94.44%
NWS Digital Forecast   94.62% 94.62% 93.55% 93.55% 94.09%
AerisWeather   93.55% 95.70% 91.40% 91.40% 93.01%
Weather Underground   100.00% 100.00% 78.49% 78.49% 89.25%
Persistence   89.86% 73.53% 85.51% 85.51% 83.60%
Foreca/Vaisala   89.25% 91.40% 64.52% 64.52% 77.42%
Dark Sky   61.29% 82.80% 78.49% 78.49% 75.27%
Weather News   88.17% 88.17% 56.99% 56.99% 72.58%
Wetter   100.00% 56.99% 76.34% 44.09% 69.35%
OpenWeather   45.16% 36.56% 93.55% 93.55% 67.20%
World Weather Online   5.38% 70.97% 93.55% 93.55% 65.86%
Weatherbit   0.00% 0.00% 38.71% 38.71% 19.35%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
NWS Digital Forecast   89.26% 85.90% 85.25% 85.25% 86.41%
The Weather Channel   90.90% 94.61% 79.94% 79.94% 86.35%
Weather Underground   91.74% 94.99% 76.42% 76.42% 84.89%
AerisWeather   87.49% 80.21% 80.77% 80.77% 82.31%
AccuWeather   92.96% 92.84% 66.67% 75.40% 81.97%
Persistence   80.48% 81.71% 79.36% 79.36% 80.23%
Dark Sky   84.68% 82.82% 74.74% 74.74% 79.25%
Foreca/Vaisala   88.95% 93.59% 52.32% 50.70% 71.39%
Wetter   77.34% 74.00% 53.02% 52.65% 64.25%
OpenWeather   17.46% 40.20% 86.35% 86.35% 57.59%
World Weather Online   6.61% 50.93% 85.29% 85.29% 57.03%
Weather News   87.65% 87.00% 15.88% 15.88% 51.60%
Weatherbit   0.00% 0.00% 34.50% 34.50% 17.25%

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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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