Weather forecast accuracy details for Key West, Florida

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
The Weather Channel   96.67% 98.89% 95.56% 95.56% 96.67%
Foreca   93.33% 96.67% 96.67% 96.67% 95.83%
Microsoft   97.78% 96.67% 94.44% 94.44% 95.83%
AerisWeather   93.33% 95.56% 96.67% 96.67% 95.56%
Weatherbit   96.67% 98.89% 90.00% 90.00% 93.89%
Pirate Weather   96.67% 78.89% 96.67% 88.89% 90.28%
NWS Digital Forecast   90.91% 94.32% 86.36% 86.36% 89.49%
Persistence   81.11% 68.89% 84.44% 84.44% 79.72%
Open-Meteo   83.33% 80.00% 65.56% 65.56% 73.61%
World Weather Online   43.33% 81.11% 81.11% 81.11% 71.67%
OpenWeather   68.89% 75.56% 60.00% 60.00% 66.11%
Wetter.com   30.00% 83.33% 56.67% 46.67% 54.17%

Weather Forecast Accuracy Data Last Year (2025)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   97.65% 94.29% 81.84% 81.75% 88.88%
Foreca   95.23% 92.56% 81.85% 81.85% 87.87%
AerisWeather   95.23% 92.59% 81.66% 81.66% 87.78%
The Weather Channel   93.57% 93.05% 82.04% 82.04% 87.68%
Weatherbit   96.04% 91.63% 79.94% 79.94% 86.89%
Pirate Weather   93.36% 74.56% 79.79% 77.49% 81.30%
NWS Digital Forecast   92.26% 90.96% 67.34% 67.34% 79.48%
Persistence   80.32% 65.24% 68.29% 68.29% 70.53%
Open-Meteo   70.69% 73.07% 65.71% 65.71% 68.80%
World Weather Online   40.70% 77.46% 74.12% 74.12% 66.60%
Wetter.com   38.27% 79.51% 70.96% 70.96% 64.93%
OpenWeather   34.76% 79.51% 65.71% 65.71% 61.42%

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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