5-day weather forecast for Clear Spring, Maryland

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.

Click on the headers to sort by that column.
Weather Forecast Accuracy Data Last Month
Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   64.52% 72.04% 81.72% 81.72% 75.00%
The Weather Channel   63.44% 70.97% 81.72% 81.72% 74.46%
AccuWeather   58.89% 73.33% 78.89% 80.00% 72.78%
Foreca   70.97% 73.12% 73.12% 73.12% 72.58%
MeteoGroup   52.69% 84.95% 76.34% 76.34% 72.58%
CustomWeather   49.46% 77.42% 79.57% 79.57% 71.51%
National Weather Service   59.14% 59.14% 77.42% 78.49% 68.55%
WeatherBug   60.22% 52.69% 76.34% 76.34% 66.40%
Dark Sky (forecast.io)   48.39% 62.37% 75.27% 75.27% 65.32%
Persistence   27.96% 25.81% 52.69% 52.69% 39.78%
Weather Forecast Accuracy Data Last Year
Provider High Temp Low Temp Icon Precip Text Precip Overall
MeteoGroup   75.31% 74.86% 84.92% 85.30% 80.10%
The Weather Channel   72.41% 70.24% 82.28% 82.28% 76.80%
AccuWeather   71.07% 68.71% 80.27% 80.17% 75.06%
Weather Underground   68.58% 64.11% 83.52% 80.17% 74.10%
Foreca   68.90% 66.54% 80.17% 80.17% 73.95%
WeatherBug   66.07% 62.51% 82.20% 82.20% 73.24%
National Weather Service   66.38% 66.03% 80.02% 79.35% 72.94%
CustomWeather   65.04% 65.74% 76.44% 76.44% 70.91%
Persistence   33.00% 26.55% 57.47% 57.47% 43.62%
 
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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 white paper.

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