Weather forecast accuracy details for Renton, Washington

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 (September)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   87.67% 94.52% 89.74% 89.74% 90.42%
The Weather Channel   85.90% 97.44% 84.62% 84.62% 88.14%
Foreca   85.90% 93.59% 85.90% 85.90% 87.82%
AerisWeather   85.90% 93.59% 85.90% 85.90% 87.82%
Weatherbit   75.64% 83.33% 79.49% 79.49% 79.49%
NWS Digital Forecast   78.21% 94.87% 69.23% 69.23% 77.88%
Open-Meteo   53.85% 76.92% 87.18% 87.18% 76.28%
Pirate Weather   80.77% 61.54% 79.49% 76.92% 74.68%
World Weather Online   55.13% 71.79% 76.92% 76.92% 70.19%
OpenWeather   50.00% 58.97% 85.90% 85.90% 70.19%
Persistence   35.85% 62.96% 81.13% 81.13% 65.27%
Wetter.com   41.03% 56.41% 75.64% 73.08% 61.54%

Weather Forecast Accuracy Data Last Year (2024)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Weatherbit   84.74% 88.83% 83.19% 83.28% 85.01%
The Weather Channel   87.21% 89.60% 80.68% 80.68% 84.54%
Microsoft   86.26% 88.59% 80.35% 80.99% 84.05%
Foreca   84.82% 87.10% 79.23% 79.23% 82.59%
AerisWeather   83.42% 88.90% 77.10% 77.10% 81.63%
NWS Digital Forecast   84.20% 85.99% 74.28% 74.28% 79.69%
Pirate Weather   77.05% 59.88% 83.04% 83.04% 75.75%
Open-Meteo   68.13% 66.30% 77.58% 77.58% 72.40%
OpenWeather   66.03% 62.50% 79.42% 79.42% 71.84%
Wetter.com   62.64% 72.60% 74.11% 73.91% 70.81%
World Weather Online   60.12% 44.43% 74.71% 74.71% 63.49%
Persistence   42.79% 50.59% 60.38% 60.38% 53.53%

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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