WEATHER QUESTION: Astronomical Fall vs. Meteorological Fall

Weather Questions with Cody Nickel

In this weeks weather question, we ask do you know the difference between Astronomical Fall and Meteorological Fall.

Astronomical Fall is signified by the Autumnal Equinox which officially starts Saturday, September 22, 2018 at 9:54 p.m. ET.

The Autumnal Equinox, which is more widely known around the world, marks when the sun is directly overhead the equator. 

The term equinox, which is latin for equator daylight; however, since we are located at a higher latitude than the equator, we will not have equal daylight until four days later on September 26.

The amount of daylight we will see Saturday, September 26 is roughly 12 hours and 8 minutes.

In comparison, Meteorological Fall is more common and widely used in the meteorological world started September 1st and includes the months of October and November. 

Categorizing Fall or Autumn into these three months helps the weather community analyze the data and compare temperature data from season to season better by breaking each season up into three month increments.

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