First Autumn Freeze Yet to Occur
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First Autumn Freeze Yet to Occur
(Published 10/07/2012)
It may seem cold over the next few days, but...

The first freeze of the autumn usually occurs back in September in the Northern Mountains and down to the Allegheny Front. Even places as far south as Franklin County usually have a freeze sometime during the next week. So, while it will seem chilly with respect to how mild/warm it has been this year - it is October, after all. See the graphic below.

Something to keep in mind: The statistic on the graphic (The average date of the first freeze) is not the date when the "normal" low temperature for the day becomes 32 degrees. Rather, it is the date when the first foray down to or below freezing happens. This occurs well before the average low hits freezing - as temperatures regularly fluctuate with each day.

The date when the average minimum temperature (based on data from 1981-2010) becomes 32 degrees:
WIlliamsport = Nov 20th.
Harrisburg = Nov 24th.
See all the climatological normals:
Average Date of the First Freeze of the Autumn
Average Date of the First Freeze of the Autumn

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Page Last Modified: 09 October 2012 23:37:35 UTC
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