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, April 1901

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Wettest/Driest
Since		Record
April 1901
1-Month		5.58"
(141.73mm)		3.64"
(92.46mm)		1.94"
(49.27mm)		118th Driest
Driest since:
1946
12th Wettest
Wettest to Date
2011
Mar–Apr 1901
2-Month		9.68"
(245.87mm)		7.14"
(181.36mm)		2.54"
(64.51mm)		123rd Driest
Driest since:
1915
7th Wettest
Wettest to Date
2011
Ties: 1933
Feb–Apr 1901
3-Month		10.67"
(271.02mm)		9.73"
(247.14mm)		0.94"
(23.88mm)		91st Driest
Driest since:
1941
39th Wettest
Wettest to Date
2011
Jan–Apr 1901
4-Month		12.98"
(329.69mm)		12.78"
(324.61mm)		0.20"
(5.08mm)		73rd Driest
Driest since:
1941
57th Wettest
Wettest since:
2011
Dec 1900–Apr 1901
5-Month		15.18"
(385.57mm)		15.88"
(403.35mm)		-0.70"
(-17.78mm)		54th Driest
Driest since:
1941
75th Wettest
Wettest since:
2011
Nov 1900–Apr 1901
6-Month		19.73"
(501.14mm)		19.09"
(484.89mm)		0.64"
(16.25mm)		78th Driest
Driest since:
1931
51st Wettest
Wettest since:
1952
Oct 1900–Apr 1901
7-Month		22.76"
(578.10mm)		22.27"
(565.66mm)		0.49"
(12.44mm)		71st Driest
Driest since:
1925
58th Wettest
Wettest since:
2011
Sep 1900–Apr 1901
8-Month		24.32"
(617.73mm)		25.83"
(656.08mm)		-1.51"
(-38.35mm)		44th Driest
Driest since:
1931
85th Wettest
Wettest since:
2019
Aug 1900–Apr 1901
9-Month		27.73"
(704.34mm)		29.69"
(754.13mm)		-1.96"
(-49.79mm)		41st Driest
Driest since:
1931
88th Wettest
Wettest since:
2019
Jul 1900–Apr 1901
10-Month		32.47"
(824.74mm)		33.89"
(860.81mm)		-1.42"
(-36.07mm)		47th Driest
Driest since:
1931
82nd Wettest
Wettest since:
2019
Jun 1900–Apr 1901
11-Month		36.10"
(916.94mm)		38.05"
(966.47mm)		-1.95"
(-49.53mm)		41st Driest
Driest since:
1931
88th Wettest
Wettest since:
2019
May 1900–Apr 1901
12-Month		38.82"
(986.03mm)		41.95"
(1,065.53mm)		-3.13"
(-79.50mm)		28th Driest
Driest since:
1931
101st Wettest
Wettest since:
2019
Nov 1899–Apr 1901
18-Month		56.76"
(1,441.70mm)		61.03"
(1,550.16mm)		-4.27"
(-108.46mm)		25th Driest
Driest to Date
1931
103rd Wettest
Wettest since:
2019
May 1899–Apr 1901
24-Month		78.11"
(1,983.99mm)		83.91"
(2,131.31mm)		-5.80"
(-147.32mm)		23rd Driest
Driest since:
1966
105th Wettest
Wettest since:
2020
May 1898–Apr 1901
36-Month		122.87"
(3,120.90mm)		125.93"
(3,198.62mm)		-3.06"
(-77.72mm)		36th Driest
Driest since:
1967
91st Wettest
Wettest since:
2020
May 1897–Apr 1901
48-Month		166.41"
(4,226.81mm)		167.93"
(4,265.42mm)		-1.52"
(-38.61mm)		41st Driest
Driest since:
1966
85th Wettest
Wettest since:
2020
May 1896–Apr 1901
60-Month		206.99"
(5,257.55mm)		209.83"
(5,329.68mm)		-2.84"
(-72.13mm)		39th Driest
Driest since:
1967
86th Wettest
Wettest to Date
2022

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