Weather forecast accuracy details for Concord, 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 (February)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   91.76% 69.41% 92.94% 98.82% 88.24%
Foreca/Vaisala   88.51% 71.26% 95.40% 95.40% 87.64%
The Weather Channel   88.51% 74.71% 93.10% 93.10% 87.36%
AccuWeather   88.57% 72.06% 88.57% 87.14% 84.09%
Weatherbit   91.76% 63.41% 89.41% 89.41% 83.50%
NWS Digital Forecast   86.21% 67.82% 87.36% 87.36% 82.18%
AerisWeather   83.91% 59.77% 87.36% 87.36% 79.60%
Open-Meteo   68.97% 43.68% 91.95% 91.95% 74.14%
World Weather Online   68.97% 47.13% 88.51% 88.51% 73.28%
OpenWeather   68.97% 29.89% 94.25% 94.25% 71.84%
Pirate Weather   59.77% 36.78% 94.25% 94.25% 71.26%
Wetter   64.37% 51.72% 82.76% 73.56% 68.10%
Persistence   40.62% 34.38% 64.06% 64.06% 50.78%

Weather Forecast Accuracy Data Last Year (2023)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   81.52% 78.05% 94.67% 94.67% 87.23%
The Weather Channel   80.72% 76.03% 94.78% 94.78% 86.58%
Foreca/Vaisala   78.05% 75.11% 95.24% 95.24% 85.91%
AccuWeather   77.98% 67.14% 91.54% 90.78% 81.86%
AerisWeather   70.43% 66.57% 92.31% 92.31% 80.41%
NWS Digital Forecast   70.31% 64.66% 90.77% 90.77% 79.13%
Weatherbit   60.49% 60.32% 91.84% 91.84% 76.12%
OpenWeather   57.39% 48.12% 92.77% 92.77% 72.76%
Wetter   59.23% 44.81% 90.20% 89.56% 70.95%
Pirate Weather   52.58% 38.03% 93.30% 93.30% 69.30%
World Weather Online   47.55% 47.17% 90.23% 90.23% 68.79%
Persistence   51.77% 43.11% 75.79% 75.79% 61.62%

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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