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, September 1900

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 1900
1-Month		1.56"
(39.62mm)		3.59"
(91.19mm)		-2.03"
(-51.57mm)		6th Driest
Driest to Date
1943
123rd Wettest
Wettest since:
2011
Ties: 1948
Aug–Sep 1900
2-Month		4.97"
(126.24mm)		7.45"
(189.23mm)		-2.48"
(-62.99mm)		11th Driest
Driest to Date
1943
118th Wettest
Wettest since:
2011
Jul–Sep 1900
3-Month		9.71"
(246.63mm)		11.64"
(295.66mm)		-1.93"
(-49.03mm)		28th Driest
Driest since:
1930
101st Wettest
Wettest since:
2018
Ties: 1913
Jun–Sep 1900
4-Month		13.34"
(338.84mm)		15.81"
(401.57mm)		-2.47"
(-62.73mm)		22nd Driest
Driest since:
1930
107th Wettest
Wettest since:
2018
May–Sep 1900
5-Month		16.06"
(407.92mm)		19.74"
(501.40mm)		-3.68"
(-93.48mm)		16th Driest
Driest since:
1930
113th Wettest
Wettest since:
2018
Apr–Sep 1900
6-Month		17.59"
(446.79mm)		23.38"
(593.85mm)		-5.79"
(-147.06mm)		7th Driest
Driest to Date
1930
122nd Wettest
Wettest since:
2018
Mar–Sep 1900
7-Month		21.18"
(537.97mm)		26.87"
(682.50mm)		-5.69"
(-144.53mm)		9th Driest
Driest since:
1930
120th Wettest
Wettest since:
2011
Feb–Sep 1900
8-Month		25.26"
(641.60mm)		29.47"
(748.54mm)		-4.21"
(-106.94mm)		15th Driest
Driest since:
1995
114th Wettest
Wettest since:
2011
Jan–Sep 1900
9-Month		28.07"
(712.98mm)		32.52"
(826.01mm)		-4.45"
(-113.03mm)		15th Driest
Driest since:
1930
114th Wettest
Wettest since:
2018
Ties: 1925
Dec 1899–Sep 1900
10-Month		31.18"
(791.97mm)		35.62"
(904.75mm)		-4.44"
(-112.78mm)		16th Driest
Driest to Date
1963
112th Wettest
Wettest since:
2011
Nov 1899–Sep 1900
11-Month		34.00"
(863.60mm)		38.83"
(986.28mm)		-4.83"
(-122.68mm)		16th Driest
Driest to Date
1963
112th Wettest
Wettest since:
2011
Oct 1899–Sep 1900
12-Month		35.73"
(907.54mm)		42.00"
(1,066.80mm)		-6.27"
(-159.26mm)		12th Driest
Driest to Date
1925
116th Wettest
Wettest since:
2011
Apr 1899–Sep 1900
18-Month		56.97"
(1,447.04mm)		65.31"
(1,658.87mm)		-8.34"
(-211.83mm)		8th Driest
Driest to Date
1966
120th Wettest
Wettest since:
2019
Oct 1898–Sep 1900
24-Month		80.91"
(2,055.11mm)		83.94"
(2,132.08mm)		-3.03"
(-76.97mm)		34th Driest
Driest since:
1966
93rd Wettest
Wettest since:
2019
Oct 1897–Sep 1900
36-Month		124.24"
(3,155.70mm)		125.94"
(3,198.88mm)		-1.70"
(-43.18mm)		40th Driest
Driest since:
1965
86th Wettest
Wettest since:
2019
Oct 1896–Sep 1900
48-Month		163.53"
(4,153.66mm)		167.94"
(4,265.68mm)		-4.41"
(-112.02mm)		30th Driest
Driest to Date
1966
95th Wettest
Wettest since:
2021
Oct 1895–Sep 1900
60-Month		203.46"
(5,167.88mm)		209.89"
(5,331.21mm)		-6.43"
(-163.33mm)		25th Driest
Driest to Date
1966
99th Wettest
Wettest to Date
2021

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