Weather forecast accuracy details for Phoenix, Arizona

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.

Click on the headers to sort by that column.

Weather Forecast Accuracy Data Last Month (February)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   90.80% 93.10% 98.85% 98.85% 95.40%
Foreca/Vaisala   91.95% 89.66% 98.85% 98.85% 94.83%
Microsoft   88.51% 90.80% 100.00% 100.00% 94.83%
AccuWeather   90.36% 82.93% 96.39% 96.39% 91.51%
AerisWeather   86.21% 87.36% 93.10% 93.10% 89.94%
Weatherbit   88.51% 62.07% 96.55% 96.55% 85.92%
NWS Digital Forecast   87.36% 59.77% 96.55% 96.55% 85.06%
World Weather Online   62.07% 49.43% 95.40% 95.40% 75.57%
OpenWeather   60.92% 31.03% 98.85% 98.85% 72.41%
Wetter   62.07% 42.53% 94.25% 82.76% 70.40%
Open-Meteo   63.22% 18.39% 96.55% 96.55% 68.68%
Pirate Weather   43.68% 24.14% 100.00% 100.00% 66.95%
Persistence   46.88% 39.68% 70.31% 70.31% 56.80%

Weather Forecast Accuracy Data Last Year (2023)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   91.78% 80.18% 95.71% 95.71% 90.84%
Foreca/Vaisala   89.77% 79.45% 95.16% 95.16% 89.89%
Microsoft   83.64% 82.54% 95.61% 95.61% 89.35%
AccuWeather   91.28% 78.03% 93.08% 93.08% 88.87%
AerisWeather   90.59% 77.72% 92.24% 92.24% 88.20%
NWS Digital Forecast   88.84% 64.21% 88.56% 88.56% 82.54%
Weatherbit   82.62% 57.27% 94.24% 94.24% 82.09%
Wetter   73.06% 65.11% 93.70% 93.42% 81.32%
World Weather Online   76.31% 41.55% 89.88% 89.88% 74.40%
OpenWeather   64.20% 44.75% 89.04% 89.04% 71.76%
Pirate Weather   56.78% 39.29% 93.86% 93.86% 70.95%
Persistence   46.36% 50.06% 85.07% 85.07% 66.64%

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.

Please contact us with whatever custom needs you may have. We would love to help!