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 1895

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
May 1895
1-Month
2.67"
(67.82mm)
3.93"
(99.82mm)
-1.26"
(-32.00mm)
26th Driest
Driest to Date
1964
103rd Wettest
Wettest to Date
1989
Apr–May 1895
2-Month
5.73"
(145.54mm)
7.57"
(192.28mm)
-1.84"
(-46.74mm)
20th Driest
Driest to Date
1926
109th Wettest
Wettest to Date
2011
Mar–May 1895
3-Month
8.02"
(203.71mm)
11.06"
(280.92mm)
-3.04"
(-77.21mm)
8th Driest
Driest to Date
1926
121st Wettest
Wettest to Date
2011
Feb–May 1895
4-Month
9.30"
(236.22mm)
13.66"
(346.96mm)
-4.36"
(-110.74mm)
3rd Driest
Driest to Date
1941
126th Wettest
Wettest to Date
2011
Jan–May 1895
5-Month
13.48"
(342.39mm)
16.71"
(424.43mm)
-3.23"
(-82.04mm)
9th Driest
Driest to Date
1941
120th Wettest
Wettest to Date
2011

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