5-day weather forecast for Dallas, Oregon

Weather forecast accuracy details for Salem, Oregon

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
AccuWeather   86.21% 82.76% 82.76% 82.76% 83.62%
The Weather Channel   87.78% 80.00% 82.22% 82.22% 83.06%
Weather Underground   86.67% 81.11% 82.22% 82.22% 83.06%
NWS Digital Forecast   76.67% 74.44% 87.78% 87.78% 81.67%
Dark Sky (forecast.io)   64.44% 71.11% 90.00% 90.00% 78.89%
MeteoGroup   86.67% 74.44% 73.33% 73.33% 76.94%
Foreca   76.67% 74.44% 76.67% 76.67% 76.11%
Persistence   33.33% 46.67% 48.89% 48.89% 44.44%
Weather Forecast Accuracy Data Last Year
Provider High Temp Low Temp Icon Precip Text Precip Overall
Weather Underground   72.25% 67.44% 85.74% 85.74% 77.79%
Foreca   70.67% 68.11% 85.43% 85.43% 77.41%
The Weather Channel   72.01% 66.28% 85.52% 85.52% 77.33%
MeteoGroup   75.41% 69.84% 81.84% 81.84% 77.23%
AccuWeather   70.32% 63.11% 85.11% 86.74% 76.32%
NWS Digital Forecast   60.76% 61.25% 86.37% 86.37% 73.69%
WeatherBug   59.27% 56.10% 86.94% 86.94% 72.31%
CustomWeather   58.66% 59.83% 85.29% 85.29% 72.27%
Persistence   36.27% 38.55% 66.53% 66.53% 51.97%
 
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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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