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 (February)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   87.36% 86.21% 98.85% 98.85% 92.82%
Microsoft   89.29% 76.19% 97.62% 98.81% 90.48%
AccuWeather   83.56% 81.94% 94.52% 95.89% 88.98%
AerisWeather   78.16% 82.76% 96.55% 96.55% 88.51%
Weatherbit   89.29% 73.81% 90.48% 90.48% 86.01%
Foreca/Vaisala   74.71% 73.56% 96.55% 96.55% 85.34%
NWS Digital Forecast   74.07% 66.67% 82.72% 82.72% 76.54%
Open-Meteo   62.07% 56.32% 91.95% 91.95% 75.57%
Pirate Weather   65.52% 28.74% 95.40% 95.40% 71.26%
World Weather Online   49.43% 59.77% 85.06% 85.06% 69.83%
Wetter   31.03% 66.67% 91.95% 88.51% 69.54%
OpenWeather   49.43% 35.63% 91.95% 91.95% 67.24%
Persistence   31.67% 36.07% 70.00% 70.00% 51.93%

Weather Forecast Accuracy Data Last Year (2023)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   81.55% 86.39% 84.75% 84.75% 84.36%
Microsoft   77.47% 84.83% 83.69% 83.69% 82.42%
AccuWeather   76.02% 85.80% 82.37% 81.71% 81.47%
Foreca/Vaisala   76.71% 84.20% 82.37% 82.37% 81.42%
AerisWeather   76.16% 81.37% 82.92% 82.92% 80.84%
Weatherbit   70.31% 73.83% 81.42% 81.51% 76.77%
NWS Digital Forecast   75.39% 72.07% 79.43% 79.43% 76.58%
Wetter   53.15% 68.58% 78.26% 76.16% 69.04%
Pirate Weather   57.97% 51.47% 83.15% 83.15% 68.93%
World Weather Online   56.32% 52.78% 77.87% 77.87% 66.21%
OpenWeather   53.52% 40.64% 81.64% 81.64% 64.36%
Persistence   38.62% 37.85% 55.88% 55.88% 47.06%

If this data feeds your inner weather geek, you'll probably be interested in the amazing amount of weather data available from ForecastWatch. Likewise, if you're looking to assess your own forecasting accuracy or would like to make more informed decisions about a weather provider you're considering or already use, we can provide data to help you.

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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