Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of September 2021. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, May 1940

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
May 1940
1-Month
4.43"
(112.52mm)
3.93"
(99.82mm)
0.50"
(12.70mm)
84th Driest Driest since: 1939 1964
44th Wettest Wettest since: 1933 1989
Apr–May 1940
2-Month
9.70"
(246.38mm)
7.57"
(192.28mm)
2.13"
(54.10mm)
109th Driest Driest since: 1939 1926
19th Wettest Wettest since: 1933 2011
Mar–May 1940
3-Month
14.58"
(370.33mm)
11.06"
(280.92mm)
3.52"
(89.41mm)
119th Driest Driest since: 1939 1926
9th Wettest Wettest since: 1933 2011
Feb–May 1940
4-Month
17.89"
(454.41mm)
13.66"
(346.96mm)
4.23"
(107.45mm)
122nd Driest Driest since: 1939 1941
6th Wettest Wettest since: 1908 2011
Jan–May 1940
5-Month
19.28"
(489.71mm)
16.71"
(424.43mm)
2.57"
(65.28mm)
105th Driest Driest since: 1939 1941
23rd Wettest Wettest since: 1937 2011
Dec 1939–May 1940
6-Month
21.64"
(549.66mm)
19.81"
(503.17mm)
1.83"
(46.49mm)
91st Driest Driest since: 1939 1941
36th Wettest Wettest since: 1937 2011
Nov 1939–May 1940
7-Month
22.66"
(575.56mm)
23.02"
(584.71mm)
-0.36"
(-9.15mm)
62nd Driest Driest since: 1939 1934
65th Wettest Wettest since: 1937 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: 1939 1925
56th Wettest Wettest since: 1937 2011
Sep 1939–May 1940
9-Month
29.89"
(759.21mm)
29.75"
(755.65mm)
0.14"
(3.56mm)
70th Driest Driest since: 1939 1941
57th Wettest Wettest since: 1937 2019
Aug 1939–May 1940
10-Month
32.59"
(827.79mm)
33.62"
(853.95mm)
-1.03"
(-26.16mm)
48th Driest Driest since: 1939 1931
79th Wettest Wettest since: 1938 2019
Jul 1939–May 1940
11-Month
35.93"
(912.62mm)
37.82"
(960.63mm)
-1.89"
(-48.01mm)
36th Driest Driest since: 1934 1931
91st Wettest Wettest since: 1939 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: 1934 1931
86th Wettest Wettest since: 1939 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: 1939 1931
93rd Wettest Wettest since: 1938 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: 1935 1931
87th Wettest Wettest since: 1939 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: 1936 1965
79th Wettest Wettest since: 1939 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: 1937 1966
65th Wettest Wettest since: 1939 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: 1938 1967
54th Wettest Wettest since: 1939 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 19, 2021 from https://www.ncdc.noaa.gov/cag/