Weather forecast accuracy details for San Ysidro, 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
AccuWeather   81.11% 78.89% 96.77% 94.62% 87.85%
The Weather Channel   84.44% 70.00% 95.70% 95.70% 86.46%
Microsoft   74.44% 77.78% 91.40% 92.47% 84.02%
Weatherbit   83.33% 60.00% 94.62% 94.62% 83.15%
Foreca/Vaisala   73.33% 72.22% 92.47% 92.47% 82.63%
Pirate Weather   84.44% 52.22% 94.62% 94.62% 81.48%
AerisWeather   73.33% 55.56% 92.47% 92.47% 78.46%
NWS Digital Forecast   67.78% 56.67% 90.32% 90.32% 76.27%
World Weather Online   54.44% 26.67% 95.70% 95.70% 68.13%
Open-Meteo   66.67% 22.22% 91.40% 91.40% 67.92%
Wetter.com   46.67% 17.78% 96.77% 96.77% 64.50%
Persistence   42.67% 34.21% 89.74% 89.74% 64.09%
OpenWeather   68.89% 1.11% 92.47% 92.47% 63.74%

Weather Forecast Accuracy Data Last Year (2024)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   89.38% 84.75% 95.08% 95.97% 91.29%
The Weather Channel   88.45% 82.35% 96.08% 96.08% 90.74%
AccuWeather   86.95% 82.55% 94.79% 94.60% 89.73%
Foreca/Vaisala   86.95% 81.03% 94.58% 94.58% 89.29%
AerisWeather   86.48% 76.90% 93.84% 93.84% 87.76%
Weatherbit   85.57% 77.83% 93.34% 93.34% 87.52%
NWS Digital Forecast   76.10% 70.88% 90.92% 90.92% 82.21%
Pirate Weather   76.81% 51.46% 95.24% 95.24% 79.68%
Wetter.com   55.02% 40.94% 93.28% 92.62% 70.47%
OpenWeather   68.08% 24.69% 92.44% 92.44% 69.41%
World Weather Online   60.73% 37.10% 89.70% 89.70% 69.31%
Persistence   58.85% 55.97% 80.80% 80.80% 69.10%

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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