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 (March)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   79.57% 79.57% 95.70% 95.70% 87.63%
Microsoft   77.27% 80.68% 94.32% 95.45% 86.93%
Foreca/Vaisala   75.27% 81.72% 92.47% 92.47% 85.48%
Weatherbit   76.47% 80.00% 90.59% 90.59% 84.41%
AccuWeather   73.33% 77.78% 92.22% 93.33% 84.17%
NWS Digital Forecast   73.12% 70.97% 88.17% 88.17% 80.11%
AerisWeather   65.59% 73.12% 86.02% 86.02% 77.69%
Open-Meteo   58.06% 64.52% 89.25% 89.25% 75.27%
World Weather Online   40.86% 74.19% 87.10% 87.10% 72.31%
Pirate Weather   52.69% 34.41% 98.92% 98.92% 71.24%
Wetter   31.18% 67.74% 82.80% 82.80% 66.13%
OpenWeather   40.86% 34.41% 91.40% 91.40% 64.52%
Persistence   21.43% 23.61% 55.71% 55.71% 39.12%

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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