Weather forecast accuracy details for Hagerstown, Maryland

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
Weather Underground   83.87% 89.25% 88.17% 88.17% 87.37%
The Weather Channel   83.87% 90.32% 82.80% 82.80% 84.95%
AccuWeather   88.89% 85.56% 75.56% 75.56% 81.39%
AerisWeather   74.19% 82.80% 77.42% 77.42% 77.96%
Wetter   69.89% 78.49% 75.27% 75.27% 74.73%
Foreca/Vaisala   66.67% 80.65% 75.27% 75.27% 74.46%
Dark Sky   88.17% 46.24% 77.42% 77.42% 72.31%
NWS Digital Forecast   68.82% 77.42% 65.59% 65.59% 69.35%
Weather News   46.24% 74.19% 70.97% 70.97% 65.59%
Weatherbit   61.96% 43.01% 71.74% 71.74% 62.11%
OpenWeather   75.27% 37.63% 63.44% 63.44% 59.95%
World Weather Online   67.74% 22.58% 59.14% 59.14% 52.15%
Persistence   53.62% 41.18% 49.28% 49.28% 48.34%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   82.41% 78.89% 87.22% 87.22% 83.94%
Weather Underground   82.69% 79.44% 84.81% 84.81% 82.94%
AccuWeather   82.87% 79.31% 83.99% 80.90% 81.77%
Foreca/Vaisala   78.43% 75.93% 83.87% 85.19% 80.85%
Dark Sky   73.24% 66.02% 84.54% 84.54% 77.08%
AerisWeather   78.09% 65.27% 81.99% 81.99% 76.83%
NWS Digital Forecast   78.96% 63.48% 70.69% 70.69% 70.95%
Wetter   48.98% 62.87% 78.33% 78.33% 67.13%
Weather News   59.54% 60.83% 68.61% 68.61% 64.40%
Weatherbit   52.64% 45.56% 79.00% 79.00% 64.05%
World Weather Online   53.24% 46.30% 73.70% 73.70% 61.74%
OpenWeather   50.83% 39.07% 76.11% 76.11% 60.53%
Persistence   32.04% 30.22% 56.50% 56.50% 43.82%

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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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