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 1940

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 1940
1-Month
4.43"
(112.52mm)
3.93"
(99.82mm)
0.50"
(12.70mm)
84th Driest
Driest since:
1964
45th Wettest
Wettest since:
1989
Apr–May 1940
2-Month
9.70"
(246.38mm)
7.57"
(192.28mm)
2.13"
(54.10mm)
110th Driest
Driest since:
1926
19th Wettest
Wettest since:
2011
Mar–May 1940
3-Month
14.58"
(370.33mm)
11.06"
(280.92mm)
3.52"
(89.41mm)
120th Driest
Driest since:
1926
9th Wettest
Wettest since:
2011
Feb–May 1940
4-Month
17.89"
(454.41mm)
13.66"
(346.96mm)
4.23"
(107.45mm)
123rd Driest
Driest since:
1941
6th Wettest
Wettest since:
2011
Jan–May 1940
5-Month
19.28"
(489.71mm)
16.71"
(424.43mm)
2.57"
(65.28mm)
106th Driest
Driest since:
1941
23rd Wettest
Wettest since:
2011
Dec 1939–May 1940
6-Month
21.64"
(549.66mm)
19.81"
(503.17mm)
1.83"
(46.49mm)
92nd Driest
Driest since:
1941
36th Wettest
Wettest since:
2011
Nov 1939–May 1940
7-Month
22.66"
(575.56mm)
23.02"
(584.71mm)
-0.36"
(-9.15mm)
62nd Driest
Driest since:
1934
66th Wettest
Wettest since:
1952
Ties: 1921
Oct 1939–May 1940
8-Month
26.59"
(675.39mm)
26.19"
(665.23mm)
0.40"
(10.16mm)
71st Driest
Driest since:
1925
57th Wettest
Wettest since:
2011
Sep 1939–May 1940
9-Month
29.89"
(759.21mm)
29.75"
(755.65mm)
0.14"
(3.56mm)
70th Driest
Driest since:
1941
58th Wettest
Wettest since:
2019
Aug 1939–May 1940
10-Month
32.59"
(827.79mm)
33.62"
(853.95mm)
-1.03"
(-26.16mm)
49th Driest
Driest since:
1931
79th Wettest
Wettest since:
2019
Jul 1939–May 1940
11-Month
35.93"
(912.62mm)
37.82"
(960.63mm)
-1.89"
(-48.01mm)
36th Driest
Driest since:
1931
92nd Wettest
Wettest since:
2019
Jun 1939–May 1940
12-Month
40.32"
(1,024.13mm)
41.97"
(1,066.04mm)
-1.65"
(-41.91mm)
41st Driest
Driest since:
1931
87th Wettest
Wettest since:
2019
Dec 1938–May 1940
18-Month
59.29"
(1,505.97mm)
61.76"
(1,568.70mm)
-2.47"
(-62.73mm)
33rd Driest
Driest since:
1931
94th Wettest
Wettest since:
2019
Jun 1938–May 1940
24-Month
81.47"
(2,069.34mm)
83.91"
(2,131.31mm)
-2.44"
(-61.97mm)
39th Driest
Driest since:
1931
88th Wettest
Wettest since:
2019
Jun 1937–May 1940
36-Month
124.53"
(3,163.06mm)
125.93"
(3,198.62mm)
-1.40"
(-35.56mm)
46th Driest
Driest since:
1965
80th Wettest
Wettest since:
2020
Ties: 1907
Jun 1936–May 1940
48-Month
168.99"
(4,292.35mm)
167.92"
(4,265.17mm)
1.07"
(27.18mm)
59th Driest
Driest since:
1966
66th Wettest
Wettest since:
2020
Jun 1935–May 1940
60-Month
213.99"
(5,435.35mm)
209.84"
(5,329.94mm)
4.15"
(105.41mm)
69th Driest
Driest since:
1967
55th Wettest
Wettest since:
2022

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