Weather forecast accuracy details for Sacramento, 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 (May)

Provider High Temp Low Temp Icon Precip Text Precip Overall
AccuWeather   88.17% 84.95% 96.77% 96.77% 91.67%
The Weather Channel   82.80% 87.10% 96.77% 96.77% 90.86%
Weather Underground   81.72% 87.10% 96.77% 96.77% 90.59%
AerisWeather   79.57% 84.95% 97.85% 97.85% 90.05%
Foreca/Vaisala   81.72% 80.65% 96.77% 96.77% 88.98%
Dark Sky   74.19% 87.10% 96.77% 96.77% 88.71%
Weather News   75.27% 65.59% 96.77% 96.77% 83.60%
NWS Digital Forecast   77.42% 68.82% 93.55% 93.55% 83.33%
OpenWeather   77.42% 56.99% 96.77% 96.77% 81.99%
Weatherbit   79.57% 40.86% 95.70% 95.70% 77.96%
Wetter   80.65% 16.13% 96.77% 96.77% 72.58%
World Weather Online   15.05% 68.82% 94.62% 94.62% 68.28%
Persistence   32.31% 35.38% 90.77% 90.77% 62.31%

Weather Forecast Accuracy Data Last Year (2021)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   79.63% 81.94% 95.46% 95.46% 88.12%
Weather Underground   79.44% 82.87% 93.33% 93.33% 87.25%
Foreca/Vaisala   78.43% 78.61% 95.93% 94.72% 86.92%
AccuWeather   79.96% 82.36% 92.05% 92.04% 86.60%
Dark Sky   75.93% 78.24% 93.61% 93.61% 85.35%
AerisWeather   73.44% 78.18% 93.50% 93.50% 84.66%
NWS Digital Forecast   73.44% 78.19% 91.32% 91.32% 83.57%
Weather News   68.86% 74.72% 85.36% 85.36% 78.57%
Weatherbit   52.85% 57.56% 91.88% 91.88% 73.54%
OpenWeather   52.87% 50.56% 93.98% 93.98% 72.85%
World Weather Online   42.69% 55.09% 93.33% 93.33% 71.11%
Wetter   53.06% 32.87% 91.67% 91.67% 67.31%
Persistence   42.21% 45.33% 83.59% 83.59% 63.68%

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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