Weather forecast accuracy details for Ukiah, 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   83.15% 75.28% 98.88% 98.88% 89.04%
AerisWeather   82.22% 55.56% 100.00% 100.00% 84.44%
Foreca   78.89% 52.22% 100.00% 100.00% 82.78%
The Weather Channel   74.44% 37.78% 97.78% 97.78% 76.94%
NWS Digital Forecast   66.67% 46.67% 96.67% 96.67% 76.67%
Weatherbit   70.67% 41.33% 96.67% 96.67% 76.33%
Pirate Weather   74.44% 23.33% 98.89% 93.33% 72.50%
OpenWeather   74.44% 26.67% 94.44% 94.44% 72.50%
Persistence   62.22% 52.22% 86.67% 86.67% 71.94%
Open-Meteo   74.44% 18.89% 96.67% 96.67% 71.67%
World Weather Online   57.78% 26.67% 93.33% 93.33% 67.78%
Wetter.com   71.11% 25.56% 81.11% 90.00% 66.94%

Weather Forecast Accuracy Data Last Year (2025)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   85.13% 83.81% 96.39% 96.39% 90.43%
AerisWeather   78.79% 79.60% 96.96% 96.96% 88.08%
The Weather Channel   81.63% 76.77% 96.20% 96.20% 87.70%
Foreca   78.41% 78.75% 96.58% 96.58% 87.58%
Weatherbit   77.35% 75.27% 94.97% 94.97% 85.64%
NWS Digital Forecast   73.79% 71.02% 94.48% 94.48% 83.44%
Pirate Weather   75.31% 49.72% 95.33% 94.48% 78.71%
Open-Meteo   57.20% 46.84% 94.68% 94.68% 73.35%
OpenWeather   53.03% 44.19% 94.78% 94.78% 71.69%
Wetter.com   47.16% 44.19% 87.37% 88.70% 66.86%
World Weather Online   41.00% 34.47% 89.27% 89.27% 63.50%
Persistence   38.59% 46.24% 79.50% 79.50% 60.96%

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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