5-day weather forecast for San Diego, California

Weather forecast accuracy details for San Diego, 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
Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   90.00% 88.89% 90.00% 90.00% 89.72%
Weather Underground   90.00% 88.89% 90.00% 90.00% 89.72%
AccuWeather   87.78% 91.11% 88.89% 88.89% 89.17%
MeteoGroup   82.22% 90.00% 90.00% 90.00% 88.06%
Foreca   84.44% 85.56% 87.78% 87.78% 86.39%
Dark Sky   82.22% 73.33% 90.00% 90.00% 83.89%
NWS Digital Forecast   78.89% 80.00% 87.78% 87.78% 83.61%
World Weather Online   77.78% 24.44% 80.00% 80.00% 65.56%
Persistence   56.76% 52.70% 75.68% 75.68% 65.20%
Weather Forecast Accuracy Data Last Year
Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   83.04% 77.88% 93.04% 92.84% 86.70%
Weather Underground   82.93% 77.74% 92.97% 92.97% 86.65%
Foreca   79.76% 78.57% 93.33% 93.33% 86.25%
AccuWeather   80.36% 79.96% 91.96% 90.78% 85.77%
MeteoGroup   81.05% 76.49% 90.10% 90.10% 84.43%
NWS Digital Forecast   78.96% 71.54% 90.46% 90.46% 82.86%
Dark Sky   74.60% 62.70% 91.57% 91.57% 80.11%
World Weather Online   61.81% 62.20% 86.08% 86.08% 74.04%
Persistence   49.45% 59.68% 80.36% 80.36% 67.46%
 
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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 white paper.

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