Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pennsylvania

Precipitation Rankings, September 2010

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Record Driest

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
September 2010 1-Month	3.41" (86.61mm)	3.59" (91.19mm)	-0.18" (-4.58mm)	66th Driest	Driest since: 2009	1943
September 2010 1-Month	3.41" (86.61mm)	3.59" (91.19mm)	-0.18" (-4.58mm)	63rd Wettest	Wettest since: 2008	2011
Aug–Sep 2010 2-Month	6.52" (165.61mm)	7.45" (189.23mm)	-0.93" (-23.62mm)	44th Driest	Driest since: 2005	1943
Aug–Sep 2010 2-Month	6.52" (165.61mm)	7.45" (189.23mm)	-0.93" (-23.62mm)	85th Wettest	Wettest since: 2009	2011
Jul–Sep 2010 3-Month	11.16" (283.46mm)	11.64" (295.66mm)	-0.48" (-12.20mm)	49th Driest	Driest since: 2005	1930
Jul–Sep 2010 3-Month	11.16" (283.46mm)	11.64" (295.66mm)	-0.48" (-12.20mm)	80th Wettest	Wettest since: 2009	2018
Jun–Sep 2010 4-Month	14.79" (375.67mm)	15.81" (401.57mm)	-1.02" (-25.90mm)	48th Driest	Driest since: 2005	1930
Jun–Sep 2010 4-Month	14.79" (375.67mm)	15.81" (401.57mm)	-1.02" (-25.90mm)	81st Wettest	Wettest since: 2009	2018
May–Sep 2010 5-Month	18.81" (477.77mm)	19.74" (501.40mm)	-0.93" (-23.63mm)	46th Driest	Driest since: 2007	1930
May–Sep 2010 5-Month	18.81" (477.77mm)	19.74" (501.40mm)	-0.93" (-23.63mm)	83rd Wettest	Wettest since: 2009	2018
Apr–Sep 2010 6-Month	21.12" (536.45mm)	23.38" (593.85mm)	-2.26" (-57.40mm)	27th Driest	Driest since: 2005	1930
Apr–Sep 2010 6-Month	21.12" (536.45mm)	23.38" (593.85mm)	-2.26" (-57.40mm)	102nd Wettest	Wettest since: 2009	2018
Mar–Sep 2010 7-Month	24.69" (627.13mm)	26.87" (682.50mm)	-2.18" (-55.37mm)	31st Driest	Driest since: 2005	1930
	24.69" (627.13mm)	26.87" (682.50mm)	-2.18" (-55.37mm)	98th Wettest	Wettest since: 2009	2011
	Ties: 1926
Feb–Sep 2010 8-Month	27.35" (694.69mm)	29.47" (748.54mm)	-2.12" (-53.85mm)	33rd Driest	Driest since: 2005	1995
Feb–Sep 2010 8-Month	27.35" (694.69mm)	29.47" (748.54mm)	-2.12" (-53.85mm)	96th Wettest	Wettest since: 2009	2011
Jan–Sep 2010 9-Month	30.43" (772.92mm)	32.52" (826.01mm)	-2.09" (-53.09mm)	32nd Driest	Driest since: 2005	1930
Jan–Sep 2010 9-Month	30.43" (772.92mm)	32.52" (826.01mm)	-2.09" (-53.09mm)	97th Wettest	Wettest since: 2009	2018
Dec 2009–Sep 2010 10-Month	34.82" (884.43mm)	35.62" (904.75mm)	-0.80" (-20.32mm)	51st Driest	Driest since: 2007	1963
	34.82" (884.43mm)	35.62" (904.75mm)	-0.80" (-20.32mm)	77th Wettest	Wettest since: 2009	2011
	Ties: 1921
Nov 2009–Sep 2010 11-Month	36.43" (925.32mm)	38.83" (986.28mm)	-2.40" (-60.96mm)	35th Driest	Driest since: 2002	1963
Nov 2009–Sep 2010 11-Month	36.43" (925.32mm)	38.83" (986.28mm)	-2.40" (-60.96mm)	93rd Wettest	Wettest since: 2009	2011
Oct 2009–Sep 2010 12-Month	41.20" (1,046.48mm)	42.00" (1,066.80mm)	-0.80" (-20.32mm)	47th Driest	Driest since: 2005	1925
Oct 2009–Sep 2010 12-Month	41.20" (1,046.48mm)	42.00" (1,066.80mm)	-0.80" (-20.32mm)	81st Wettest	Wettest since: 2009	2011
Apr 2009–Sep 2010 18-Month	67.11" (1,704.59mm)	65.31" (1,658.87mm)	1.80" (45.72mm)	72nd Driest	Driest since: 2009	1966
Apr 2009–Sep 2010 18-Month	67.11" (1,704.59mm)	65.31" (1,658.87mm)	1.80" (45.72mm)	56th Wettest	Wettest since: 2008	2019
Oct 2008–Sep 2010 24-Month	83.78" (2,128.01mm)	83.94" (2,132.08mm)	-0.16" (-4.07mm)	55th Driest	Driest since: 2002	1966
	83.78" (2,128.01mm)	83.94" (2,132.08mm)	-0.16" (-4.07mm)	72nd Wettest	Wettest since: 2009	2019
	Ties: 1960
Oct 2007–Sep 2010 36-Month	131.94" (3,351.28mm)	125.94" (3,198.88mm)	6.00" (152.40mm)	91st Driest	Driest since: 2007	1965
Oct 2007–Sep 2010 36-Month	131.94" (3,351.28mm)	125.94" (3,198.88mm)	6.00" (152.40mm)	35th Wettest	Wettest since: 2009	2019
Oct 2006–Sep 2010 48-Month	174.64" (4,435.86mm)	167.94" (4,265.68mm)	6.70" (170.18mm)	88th Driest	Driest since: 2003	1966
Oct 2006–Sep 2010 48-Month	174.64" (4,435.86mm)	167.94" (4,265.68mm)	6.70" (170.18mm)	37th Wettest	Wettest since: 2009	2021
Oct 2005–Sep 2010 60-Month	223.96" (5,688.58mm)	209.89" (5,331.21mm)	14.07" (357.37mm)	100th Driest	Driest since: 2009	1966
Oct 2005–Sep 2010 60-Month	223.96" (5,688.58mm)	209.89" (5,331.21mm)	14.07" (357.37mm)	24th Wettest	Wettest since: 2008	2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 23, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings