Weather forecast accuracy details for Nashville, Tennessee

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 (December)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   69.77% 74.42% 86.52% 86.52% 79.30%
The Weather Channel   68.89% 78.89% 83.33% 83.33% 78.61%
AerisWeather   63.33% 67.78% 82.22% 82.22% 73.89%
Foreca   62.22% 65.56% 83.33% 83.33% 73.61%
Weatherbit   55.06% 65.17% 82.22% 82.22% 71.17%
NWS Digital Forecast   52.22% 56.67% 81.11% 81.11% 67.78%
Pirate Weather   62.22% 26.67% 83.33% 84.44% 64.17%
Open-Meteo   46.67% 52.22% 72.22% 72.22% 60.83%
World Weather Online   41.11% 62.22% 68.89% 68.89% 60.28%
OpenWeather   50.00% 20.00% 74.44% 74.44% 54.72%
Wetter.com   23.33% 30.00% 67.78% 68.89% 47.50%
Persistence   26.67% 25.56% 67.78% 67.78% 46.94%

Weather Forecast Accuracy Data Last Year (2025)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   85.04% 84.62% 85.31% 85.41% 85.10%
The Weather Channel   84.91% 87.79% 82.26% 82.26% 84.31%
AerisWeather   77.00% 79.60% 82.66% 82.66% 80.48%
Foreca   76.91% 77.81% 82.85% 82.85% 80.11%
Weatherbit   79.92% 78.94% 79.69% 79.79% 79.59%
NWS Digital Forecast   72.75% 75.70% 75.02% 75.02% 74.63%
Pirate Weather   72.01% 46.15% 82.76% 79.38% 70.07%
Open-Meteo   59.81% 59.58% 77.49% 77.49% 68.59%
World Weather Online   54.78% 58.05% 76.34% 76.34% 66.38%
OpenWeather   62.13% 47.32% 76.15% 76.15% 65.44%
Wetter.com   40.71% 58.38% 71.54% 71.15% 60.45%
Persistence   37.45% 34.37% 58.56% 58.56% 47.23%

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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