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for Central Pennsylvania
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Climate Normals (Long-Term Averages)

Get Daily Normals (output to a new/separate page)
These are the NEW 1981-2010 Normals
All
Maxes
Means
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Snow
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Daily Normals for April 20th for Both Sites.
SiteDate
MM-DD
Normal MaxNormal MeanNormal MinNormal PrecipNormal SnowfallNormal HDDsNormal CDDs
Williamsport04-2063 52 40 0.1 0 14 0
Harrisburg04-2064 54 43 0.11 0.1 11 0

See Graphs Like These:Records (Extremes)They show the actual daily highs and lows, as well as the normals and records (extremes).

See the TEXT List of All 1981-2010 IPT and MDT Daily Normals

Pennsylvania Wind Rose Downloads (gifs) from NCDC (ftp site).

Snowfall Tidbits:
Seasonal Co-Op Snowfall Maps

Local Growing Season (Frost & Freeze Dates):

The BEGINNING of the growing season is set by the average date of the last freeze in spring, and normally happens during very late April to mid May in Central PA.
The NWS will then issue Frost Advisories and Freeze Warnings, when appropriate, until the end of the growing season which is the ACTUAL first (widespread) freeze in the autumn. See a map of the Average Date of the First Freeze in Autumn.


 
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US Dept of Commerce
NOAA National Weather Service
Central Pennsylvania Weather Forecast Office
328 Innovation Blvd, Suite 330
State College, Pennsylvania 16803
(814)231-2408
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Page Last Modified: 01 April 2014 21:16:13 UTC
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