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 1930

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1930
1-Month
2.90"
(73.66mm)
3.93"
(99.82mm)
-1.03"
(-26.16mm)
30th Driest
Driest since:
1964
99th Wettest
Wettest since:
1989
Apr–May 1930
2-Month
5.83"
(148.08mm)
7.57"
(192.28mm)
-1.74"
(-44.20mm)
26th Driest
Driest since:
1926
103rd Wettest
Wettest since:
2011
Mar–May 1930
3-Month
8.90"
(226.06mm)
11.06"
(280.92mm)
-2.16"
(-54.86mm)
22nd Driest
Driest since:
1926
107th Wettest
Wettest since:
2011
Feb–May 1930
4-Month
11.46"
(291.08mm)
13.66"
(346.96mm)
-2.20"
(-55.88mm)
22nd Driest
Driest since:
1941
107th Wettest
Wettest since:
2011
Ties: 2001
Jan–May 1930
5-Month
13.86"
(352.04mm)
16.71"
(424.43mm)
-2.85"
(-72.39mm)
14th Driest
Driest since:
1941
115th Wettest
Wettest since:
2011
Dec 1929–May 1930
6-Month
16.70"
(424.18mm)
19.81"
(503.17mm)
-3.11"
(-78.99mm)
14th Driest
Driest since:
1941
114th Wettest
Wettest since:
2011
Nov 1929–May 1930
7-Month
20.13"
(511.30mm)
23.02"
(584.71mm)
-2.89"
(-73.41mm)
21st Driest
Driest since:
1934
107th Wettest
Wettest since:
1952
Oct 1929–May 1930
8-Month
25.83"
(656.08mm)
26.19"
(665.23mm)
-0.36"
(-9.15mm)
60th Driest
Driest since:
1925
68th Wettest
Wettest since:
2011
Sep 1929–May 1930
9-Month
29.55"
(750.57mm)
29.75"
(755.65mm)
-0.20"
(-5.08mm)
64th Driest
Driest since:
1941
64th Wettest
Wettest since:
2019
Aug 1929–May 1930
10-Month
31.92"
(810.77mm)
33.62"
(853.95mm)
-1.70"
(-43.18mm)
42nd Driest
Driest since:
1931
86th Wettest
Wettest since:
2019
Jul 1929–May 1930
11-Month
34.97"
(888.24mm)
37.82"
(960.63mm)
-2.85"
(-72.39mm)
30th Driest
Driest since:
1931
98th Wettest
Wettest since:
2019
Jun 1929–May 1930
12-Month
38.49"
(977.65mm)
41.97"
(1,066.04mm)
-3.48"
(-88.39mm)
28th Driest
Driest since:
1931
100th Wettest
Wettest since:
2019
Dec 1928–May 1930
18-Month
60.03"
(1,524.76mm)
61.76"
(1,568.70mm)
-1.73"
(-43.94mm)
41st Driest
Driest since:
1931
86th Wettest
Wettest since:
2019
Jun 1928–May 1930
24-Month
84.53"
(2,147.06mm)
83.91"
(2,131.31mm)
0.62"
(15.75mm)
61st Driest
Driest since:
1931
66th Wettest
Wettest since:
2019
Jun 1927–May 1930
36-Month
130.78"
(3,321.81mm)
125.93"
(3,198.62mm)
4.85"
(123.19mm)
83rd Driest
Driest since:
1965
43rd Wettest
Wettest since:
2020
Jun 1926–May 1930
48-Month
178.69"
(4,538.73mm)
167.92"
(4,265.17mm)
10.77"
(273.56mm)
98th Driest
Driest since:
1966
27th Wettest
Wettest since:
2020
Jun 1925–May 1930
60-Month
215.49"
(5,473.45mm)
209.84"
(5,329.94mm)
5.65"
(143.51mm)
75th Driest
Driest since:
1967
49th Wettest
Wettest since:
2022

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