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, May 2012

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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
May 2012 1-Month	5.10" (129.54mm)	3.93" (99.82mm)	1.17" (29.72mm)	98th Driest	Driest since: 2010	1964
May 2012 1-Month	5.10" (129.54mm)	3.93" (99.82mm)	1.17" (29.72mm)	31st Wettest	Wettest since: 2011	1989
Apr–May 2012 2-Month	7.25" (184.15mm)	7.57" (192.28mm)	-0.32" (-8.13mm)	58th Driest	Driest since: 2010	1926
Apr–May 2012 2-Month	7.25" (184.15mm)	7.57" (192.28mm)	-0.32" (-8.13mm)	71st Wettest	Wettest since: 2011	2011
Mar–May 2012 3-Month	10.14" (257.56mm)	11.06" (280.92mm)	-0.92" (-23.36mm)	50th Driest	Driest since: 2010	1926
Mar–May 2012 3-Month	10.14" (257.56mm)	11.06" (280.92mm)	-0.92" (-23.36mm)	79th Wettest	Wettest since: 2011	2011
Feb–May 2012 4-Month	11.64" (295.66mm)	13.66" (346.96mm)	-2.02" (-51.30mm)	24th Driest	Driest since: 2006	1941
Feb–May 2012 4-Month	11.64" (295.66mm)	13.66" (346.96mm)	-2.02" (-51.30mm)	105th Wettest	Wettest since: 2011	2011
Jan–May 2012 5-Month	15.00" (381.00mm)	16.71" (424.43mm)	-1.71" (-43.43mm)	39th Driest	Driest since: 2009	1941
Jan–May 2012 5-Month	15.00" (381.00mm)	16.71" (424.43mm)	-1.71" (-43.43mm)	90th Wettest	Wettest since: 2011	2011
Dec 2011–May 2012 6-Month	18.78" (477.01mm)	19.81" (503.17mm)	-1.03" (-26.16mm)	48th Driest	Driest since: 2007	1941
Dec 2011–May 2012 6-Month	18.78" (477.01mm)	19.81" (503.17mm)	-1.03" (-26.16mm)	80th Wettest	Wettest since: 2011	2011
Nov 2011–May 2012 7-Month	22.72" (577.09mm)	23.02" (584.71mm)	-0.30" (-7.62mm)	64th Driest	Driest since: 2010	1934
Nov 2011–May 2012 7-Month	22.72" (577.09mm)	23.02" (584.71mm)	-0.30" (-7.62mm)	64th Wettest	Wettest since: 2011	1952
Oct 2011–May 2012 8-Month	27.68" (703.07mm)	26.19" (665.23mm)	1.49" (37.84mm)	81st Driest	Driest since: 2010	1925
Oct 2011–May 2012 8-Month	27.68" (703.07mm)	26.19" (665.23mm)	1.49" (37.84mm)	47th Wettest	Wettest since: 2011	2011
Sep 2011–May 2012 9-Month	37.78" (959.61mm)	29.75" (755.65mm)	8.03" (203.96mm)	123rd Driest	Driest since: 2010	1941
Sep 2011–May 2012 9-Month	37.78" (959.61mm)	29.75" (755.65mm)	8.03" (203.96mm)	5th Wettest	Wettest since: 2011	2019
Aug 2011–May 2012 10-Month	44.66" (1,134.36mm)	33.62" (853.95mm)	11.04" (280.41mm)	126th Driest	Driest since: 2011	1931
Aug 2011–May 2012 10-Month	44.66" (1,134.36mm)	33.62" (853.95mm)	11.04" (280.41mm)	2nd Wettest	Wettest to Date	2019
Jul 2011–May 2012 11-Month	47.64" (1,210.06mm)	37.82" (960.63mm)	9.82" (249.43mm)	123rd Driest	Driest since: 2010	1931
Jul 2011–May 2012 11-Month	47.64" (1,210.06mm)	37.82" (960.63mm)	9.82" (249.43mm)	5th Wettest	Wettest since: 2011	2019
Jun 2011–May 2012 12-Month	50.82" (1,290.83mm)	41.97" (1,066.04mm)	8.85" (224.79mm)	121st Driest	Driest since: 2010	1931
Jun 2011–May 2012 12-Month	50.82" (1,290.83mm)	41.97" (1,066.04mm)	8.85" (224.79mm)	7th Wettest	Wettest since: 2011	2019
Dec 2010–May 2012 18-Month	79.44" (2,017.78mm)	61.76" (1,568.70mm)	17.68" (449.08mm)	125th Driest	Driest since: 2011	1931
Dec 2010–May 2012 18-Month	79.44" (2,017.78mm)	61.76" (1,568.70mm)	17.68" (449.08mm)	2nd Wettest	Wettest to Date	2019
Jun 2010–May 2012 24-Month	102.67" (2,607.82mm)	83.91" (2,131.31mm)	18.76" (476.51mm)	123rd Driest	Driest since: 2011	1931
Jun 2010–May 2012 24-Month	102.67" (2,607.82mm)	83.91" (2,131.31mm)	18.76" (476.51mm)	4th Wettest	Wettest since: 2005	2019
Jun 2009–May 2012 36-Month	146.72" (3,726.69mm)	125.93" (3,198.62mm)	20.79" (528.07mm)	120th Driest	Driest since: 2011	1965
Jun 2009–May 2012 36-Month	146.72" (3,726.69mm)	125.93" (3,198.62mm)	20.79" (528.07mm)	6th Wettest	Wettest since: 2006	2020
Jun 2008–May 2012 48-Month	186.97" (4,749.04mm)	167.92" (4,265.17mm)	19.05" (483.87mm)	113th Driest	Driest since: 2011	1966
Jun 2008–May 2012 48-Month	186.97" (4,749.04mm)	167.92" (4,265.17mm)	19.05" (483.87mm)	12th Wettest	Wettest since: 2008	2020
Jun 2007–May 2012 60-Month	234.71" (5,961.63mm)	209.84" (5,329.94mm)	24.87" (631.69mm)	117th Driest	Driest since: 2011	1967
Jun 2007–May 2012 60-Month	234.71" (5,961.63mm)	209.84" (5,329.94mm)	24.87" (631.69mm)	7th Wettest	Wettest since: 2008	2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings