Weather forecast accuracy details for Greenville, South Carolina

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 (June)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Foreca/Vaisala   85.56% 83.33% 84.44% 84.44% 84.44%
The Weather Channel   91.11% 80.00% 74.44% 74.44% 80.00%
Weather Underground   91.11% 80.00% 74.44% 74.44% 80.00%
Dark Sky   70.00% 87.78% 77.78% 77.78% 78.33%
Wetter   77.78% 73.33% 81.11% 81.11% 78.33%
AccuWeather   90.80% 88.51% 65.52% 65.52% 77.59%
Weather News   78.89% 83.33% 70.00% 70.00% 75.56%
AerisWeather   86.67% 72.22% 68.89% 68.89% 74.17%
Weatherbit   80.00% 28.89% 74.44% 74.44% 64.44%
NWS Digital Forecast   90.80% 48.28% 58.62% 58.62% 64.08%
OpenWeather   80.00% 15.56% 61.11% 61.11% 54.44%
Persistence   47.78% 36.67% 58.89% 58.89% 50.56%
World Weather Online   48.89% 8.89% 56.67% 56.67% 42.78%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   82.04% 84.26% 85.00% 85.00% 84.07%
The Weather Channel   81.76% 83.24% 85.00% 85.00% 83.75%
AccuWeather   81.46% 83.18% 82.20% 80.06% 81.72%
Foreca/Vaisala   74.72% 80.65% 80.92% 81.30% 79.40%
Dark Sky   72.59% 81.11% 80.93% 80.93% 78.89%
AerisWeather   78.66% 73.19% 80.61% 80.61% 78.27%
NWS Digital Forecast   78.21% 66.01% 73.53% 73.53% 72.82%
Wetter   56.11% 68.61% 81.85% 81.85% 72.11%
Weather News   69.51% 74.35% 70.71% 70.71% 71.32%
Weatherbit   46.22% 49.20% 80.53% 80.53% 64.12%
World Weather Online   55.83% 52.31% 73.43% 73.43% 63.75%
OpenWeather   53.43% 34.54% 75.83% 75.83% 59.91%
Persistence   39.00% 37.12% 59.59% 59.59% 48.82%

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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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