Statewide Rankings

Statewide Data Info
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 Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(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:
1964
31st Wettest
Wettest since:
1989
Apr–May 2012
2-Month		7.25"
(184.15mm)		7.57"
(192.28mm)		-0.32"
(-8.13mm)		58th Driest
Driest since:
1926
71st Wettest
Wettest since:
2011
Mar–May 2012
3-Month		10.14"
(257.56mm)		11.06"
(280.92mm)		-0.92"
(-23.36mm)		50th Driest
Driest since:
1926
79th Wettest
Wettest since:
2011
Feb–May 2012
4-Month		11.64"
(295.66mm)		13.66"
(346.96mm)		-2.02"
(-51.30mm)		24th Driest
Driest since:
1941
105th Wettest
Wettest since:
2011
Jan–May 2012
5-Month		15.00"
(381.00mm)		16.71"
(424.43mm)		-1.71"
(-43.43mm)		39th Driest
Driest since:
1941
90th Wettest
Wettest since:
2011
Dec 2011–May 2012
6-Month		18.78"
(477.01mm)		19.81"
(503.17mm)		-1.03"
(-26.16mm)		48th Driest
Driest since:
1941
80th Wettest
Wettest since:
2011
Nov 2011–May 2012
7-Month		22.72"
(577.09mm)		23.02"
(584.71mm)		-0.30"
(-7.62mm)		64th Driest
Driest since:
1934
64th Wettest
Wettest since:
1952
Oct 2011–May 2012
8-Month		27.68"
(703.07mm)		26.19"
(665.23mm)		1.49"
(37.84mm)		81st Driest
Driest since:
1925
47th Wettest
Wettest since:
2011
Sep 2011–May 2012
9-Month		37.78"
(959.61mm)		29.75"
(755.65mm)		8.03"
(203.96mm)		123rd Driest
Driest since:
1941
5th Wettest
Wettest since:
2019
Aug 2011–May 2012
10-Month		44.66"
(1,134.36mm)		33.62"
(853.95mm)		11.04"
(280.41mm)		126th Driest
Driest since:
1931
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:
1931
5th Wettest
Wettest since:
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:
1931
7th Wettest
Wettest since:
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:
1931
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:
1931
4th Wettest
Wettest since:
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:
1965
6th Wettest
Wettest since:
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:
1966
12th Wettest
Wettest since:
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:
1967
7th Wettest
Wettest since:
2022

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