Weather forecast accuracy details for Willows, 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
The Weather Channel   50.00% 88.64% 93.33% 93.33% 81.33%
Microsoft   49.40% 74.70% 94.44% 94.44% 78.25%
Weatherbit   32.00% 84.00% 92.22% 92.22% 75.11%
AerisWeather   45.45% 59.09% 96.67% 96.67% 74.47%
Foreca   44.32% 54.55% 96.67% 96.67% 73.05%
NWS Digital Forecast   39.77% 71.59% 90.00% 90.00% 72.84%
Persistence   63.22% 52.87% 82.22% 82.22% 70.13%
Open-Meteo   36.36% 46.59% 92.22% 92.22% 66.85%
Wetter.com   46.59% 56.82% 77.78% 82.22% 65.85%
OpenWeather   34.09% 45.45% 91.11% 91.11% 65.44%
Pirate Weather   32.95% 45.45% 90.00% 91.11% 64.88%
World Weather Online   26.14% 42.05% 92.22% 92.22% 63.16%

Weather Forecast Accuracy Data Last Year (2025)

Provider High Temp Low Temp Icon Precip Text Precip Overall
AerisWeather   84.17% 83.59% 94.85% 94.85% 89.37%
Microsoft   82.06% 88.04% 93.61% 93.61% 89.33%
The Weather Channel   78.29% 88.54% 94.44% 94.44% 88.93%
Foreca   83.79% 82.03% 94.85% 94.85% 88.88%
Weatherbit   75.68% 83.96% 92.59% 92.59% 86.21%
NWS Digital Forecast   75.95% 80.12% 90.94% 90.94% 84.48%
Pirate Weather   76.95% 59.63% 92.57% 91.98% 80.28%
Open-Meteo   41.38% 64.35% 91.72% 91.72% 72.29%
Wetter.com   37.97% 58.67% 88.11% 88.60% 68.34%
World Weather Online   35.25% 53.57% 89.96% 89.96% 67.19%
OpenWeather   31.25% 53.54% 91.10% 91.10% 66.75%
Persistence   43.43% 46.38% 81.52% 81.52% 63.21%

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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