When it comes to weather forecast accuracy, a new report shows that Philadelphia lands in the middle of the pack nationwide, write Niko Kommenda and Harry Stevens for The Washington Post.

The Washington Post performed an analysis of government-provided data to determine the accuracy of the National Weather Service’s official forecast across the country. The Weather Service’s forecast triggers the nation’s emergency alert systems and powers numerous commercial weather products, including AccuWeather and the Weather Company.

The analysis showed that the weather forecast accuracy within three degrees Fahrenheit varies from just one day to as many as seven days out.

In Philadelphia, the forecast is accurate to within three degrees Fahrenheit four days out, with warmer months (April through September) being easier to predict than cool months (October through March).

One day out, the forecast is usually accurate to within two degrees Fahrenheit for both warm and cold days, while that accuracy spreads to over four degrees Fahrenheit seven days out.

Read more about weather forecast accuracy in Philadelphia in The Washington Post.

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