Weather forecast accuracy details for Norfolk, Virginia

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 (August)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   86.02% 90.32% 83.87% 83.87% 86.02%
Weather Underground   84.95% 90.32% 83.87% 83.87% 85.75%
Foreca/Vaisala   79.57% 90.32% 82.80% 82.80% 83.87%
AerisWeather   73.12% 87.10% 81.72% 81.72% 80.91%
AccuWeather   82.80% 89.25% 74.19% 73.12% 79.84%
Wetter   93.55% 61.29% 77.42% 77.42% 77.42%
NWS Digital Forecast   73.12% 87.10% 64.52% 64.52% 72.31%
OpenWeather   76.34% 79.57% 63.44% 63.44% 70.70%
World Weather Online   64.52% 77.42% 53.76% 53.76% 62.37%
Persistence   47.62% 58.06% 55.56% 55.56% 54.20%
Weather News   67.74% 76.34% 64.52% 0.00% 52.15%

Weather Forecast Accuracy Data Last Year (2020)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   78.68% 81.28% 82.77% 82.77% 81.38%
Weather Underground   78.68% 81.28% 80.73% 80.73% 80.35%
Foreca/Vaisala   78.21% 79.14% 78.96% 78.96% 78.82%
AccuWeather   76.72% 81.10% 76.91% 77.19% 77.98%
AerisWeather   67.57% 70.92% 74.65% 74.65% 71.95%
NWS Digital Forecast   66.48% 71.24% 71.24% 71.24% 70.05%
Wetter   46.82% 66.29% 71.63% 71.63% 64.09%
OpenWeather   32.12% 60.43% 71.23% 71.23% 58.75%
World Weather Online   35.95% 53.22% 70.87% 70.87% 57.73%
Weather News   54.71% 59.27% 64.63% 0.00% 44.65%
Persistence   28.62% 33.52% 52.17% 52.17% 41.62%

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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 overview.

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