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 2008

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
May 2008
1-Month		4.18"
(106.17mm)		3.93"
(99.82mm)		0.25"
(6.35mm)		76th Driest
Driest since:
1964
53rd Wettest
Wettest since:
1989
Apr–May 2008
2-Month		7.31"
(185.67mm)		7.57"
(192.28mm)		-0.26"
(-6.61mm)		62nd Driest
Driest since:
1926
67th Wettest
Wettest since:
2011
Mar–May 2008
3-Month		12.69"
(322.33mm)		11.06"
(280.92mm)		1.63"
(41.41mm)		101st Driest
Driest since:
1926
28th Wettest
Wettest since:
2011
Feb–May 2008
4-Month		17.90"
(454.66mm)		13.66"
(346.96mm)		4.24"
(107.70mm)		124th Driest
Driest since:
1941
5th Wettest
Wettest since:
2011
Jan–May 2008
5-Month		19.93"
(506.22mm)		16.71"
(424.43mm)		3.22"
(81.79mm)		114th Driest
Driest since:
1941
15th Wettest
Wettest since:
2011
Dec 2007–May 2008
6-Month		24.89"
(632.21mm)		19.81"
(503.17mm)		5.08"
(129.04mm)		119th Driest
Driest since:
1941
9th Wettest
Wettest since:
2011
Nov 2007–May 2008
7-Month		28.96"
(735.58mm)		23.02"
(584.71mm)		5.94"
(150.87mm)		119th Driest
Driest since:
1934
9th Wettest
Wettest since:
1952
Oct 2007–May 2008
8-Month		32.85"
(834.39mm)		26.19"
(665.23mm)		6.66"
(169.16mm)		121st Driest
Driest since:
1925
7th Wettest
Wettest since:
2011
Sep 2007–May 2008
9-Month		34.85"
(885.19mm)		29.75"
(755.65mm)		5.10"
(129.54mm)		111th Driest
Driest since:
1941
17th Wettest
Wettest since:
2019
Ties: 1927
Aug 2007–May 2008
10-Month		40.64"
(1,032.26mm)		33.62"
(853.95mm)		7.02"
(178.31mm)		118th Driest
Driest since:
1931
10th Wettest
Wettest since:
2019
Jul 2007–May 2008
11-Month		44.04"
(1,118.62mm)		37.82"
(960.63mm)		6.22"
(157.99mm)		115th Driest
Driest since:
1931
13th Wettest
Wettest since:
2019
Jun 2007–May 2008
12-Month		47.74"
(1,212.60mm)		41.97"
(1,066.04mm)		5.77"
(146.56mm)		110th Driest
Driest since:
1931
18th Wettest
Wettest since:
2019
Dec 2006–May 2008
18-Month		66.36"
(1,685.54mm)		61.76"
(1,568.70mm)		4.60"
(116.84mm)		96th Driest
Driest since:
1931
31st Wettest
Wettest since:
2019
Jun 2006–May 2008
24-Month		97.30"
(2,471.42mm)		83.91"
(2,131.31mm)		13.39"
(340.11mm)		121st Driest
Driest since:
1931
6th Wettest
Wettest since:
2019
Jun 2005–May 2008
36-Month		137.22"
(3,485.39mm)		125.93"
(3,198.62mm)		11.29"
(286.77mm)		104th Driest
Driest since:
1965
22nd Wettest
Wettest since:
2020
Jun 2004–May 2008
48-Month		189.79"
(4,820.67mm)		167.92"
(4,265.17mm)		21.87"
(555.50mm)		117th Driest
Driest since:
1966
8th Wettest
Wettest since:
2020
Jun 2003–May 2008
60-Month		245.58"
(6,237.73mm)		209.84"
(5,329.94mm)		35.74"
(907.79mm)		121st Driest
Driest since:
1967
3rd Wettest
Wettest to Date
2022

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