Weather forecast accuracy details for Castaic, 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
Foreca/Vaisala   84.21% 89.47% 96.49% 96.49% 91.67%
AccuWeather   84.21% 94.74% 91.23% 89.47% 89.91%
AerisWeather   87.72% 73.68% 96.49% 96.49% 88.60%
Weatherbit   82.46% 75.44% 94.74% 94.74% 86.84%
The Weather Channel   71.93% 61.40% 94.74% 94.74% 80.70%
NWS Digital Forecast   73.68% 56.14% 89.47% 89.47% 77.19%
Pirate Weather   61.40% 43.86% 92.98% 92.98% 72.81%
World Weather Online   73.68% 22.81% 92.98% 92.98% 70.61%
Wetter.com   71.93% 22.81% 91.23% 91.23% 69.30%
OpenWeather   66.67% 24.56% 87.72% 87.72% 66.67%
Open-Meteo   75.44% 7.02% 91.23% 91.23% 66.23%
Persistence   41.67% 17.78% 77.08% 77.08% 53.40%

Weather Forecast Accuracy Data Last Year (2024)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Foreca/Vaisala   85.57% 85.47% 95.56% 95.56% 90.54%
AccuWeather   85.29% 91.04% 92.13% 91.41% 89.97%
AerisWeather   83.74% 81.50% 94.75% 94.85% 88.71%
Weatherbit   85.45% 82.79% 92.97% 92.97% 88.55%
NWS Digital Forecast   72.03% 73.70% 90.38% 90.38% 81.62%
The Weather Channel   63.11% 71.14% 94.85% 94.85% 80.99%
Pirate Weather   76.55% 60.24% 93.01% 93.01% 80.70%
World Weather Online   79.57% 59.45% 91.82% 91.82% 80.67%
Wetter.com   80.08% 36.38% 92.63% 92.32% 75.35%
OpenWeather   55.49% 42.58% 92.42% 92.42% 70.73%
Persistence   38.25% 36.47% 77.95% 77.95% 57.66%

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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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