Weather forecast accuracy details for South Lake Tahoe, California

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   65.82% 68.35% 97.22% 97.22% 82.16%
AerisWeather   60.22% 58.06% 97.85% 97.85% 78.49%
Foreca   59.14% 51.61% 97.85% 97.85% 76.61%
The Weather Channel   54.84% 39.78% 97.85% 97.85% 72.58%
Weatherbit   44.00% 52.00% 95.70% 95.70% 71.85%
NWS Digital Forecast   53.76% 23.66% 96.77% 96.77% 67.74%
OpenWeather   44.09% 29.03% 97.85% 97.85% 67.20%
Pirate Weather   47.31% 19.35% 95.70% 97.85% 65.05%
Open-Meteo   49.46% 20.43% 92.47% 92.47% 63.71%
World Weather Online   40.86% 15.05% 96.77% 96.77% 62.37%
Persistence   40.00% 40.00% 82.22% 82.22% 61.11%
Wetter.com   48.39% 18.28% 76.34% 79.57% 55.65%

Weather Forecast Accuracy Data Last Year (2025)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   85.57% 73.91% 90.14% 90.26% 84.97%
The Weather Channel   83.29% 57.87% 92.15% 92.15% 81.36%
AerisWeather   77.33% 65.26% 90.52% 89.85% 80.74%
Foreca   75.89% 66.22% 90.04% 90.04% 80.55%
Weatherbit   83.67% 57.06% 88.51% 88.98% 79.55%
Pirate Weather   77.58% 29.72% 91.14% 90.27% 72.18%
Open-Meteo   68.01% 18.09% 88.12% 88.12% 65.59%
NWS Digital Forecast   54.83% 27.18% 86.81% 86.81% 63.91%
OpenWeather   51.01% 21.75% 87.07% 87.07% 61.72%
World Weather Online   44.86% 20.69% 87.64% 87.64% 60.21%
Wetter.com   45.24% 14.73% 83.81% 84.67% 57.11%
Persistence   38.17% 38.18% 71.37% 71.37% 54.77%

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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