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, April 1939

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  • Record Driest
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  • Record Wettest
PeriodValue1901-2000
Mean
AnomalyRank
(1895-2023)
Wettest/Driest
Since
Record
April 1939
1-Month
3.51"
(89.15mm)
3.64"
(92.46mm)
-0.13"
(-3.31mm)
64th Driest
Driest since:
1946
66th Wettest
Wettest since:
2011
Mar–Apr 1939
2-Month
7.22"
(183.39mm)
7.14"
(181.36mm)
0.08"
(2.03mm)
72nd Driest
Driest since:
1915
58th Wettest
Wettest since:
2011
Feb–Apr 1939
3-Month
11.62"
(295.15mm)
9.73"
(247.14mm)
1.89"
(48.01mm)
105th Driest
Driest since:
1941
25th Wettest
Wettest since:
2011
Jan–Apr 1939
4-Month
14.79"
(375.67mm)
12.78"
(324.61mm)
2.01"
(51.06mm)
103rd Driest
Driest since:
1941
27th Wettest
Wettest since:
2011
Dec 1938–Apr 1939
5-Month
17.37"
(441.20mm)
15.88"
(403.35mm)
1.49"
(37.85mm)
91st Driest
Driest since:
1941
38th Wettest
Wettest since:
2011
Nov 1938–Apr 1939
6-Month
20.55"
(521.97mm)
19.09"
(484.89mm)
1.46"
(37.08mm)
92nd Driest
Driest since:
1931
37th Wettest
Wettest since:
1952
Oct 1938–Apr 1939
7-Month
22.29"
(566.17mm)
22.27"
(565.66mm)
0.02"
(0.51mm)
62nd Driest
Driest since:
1925
67th Wettest
Wettest since:
2011
Sep 1938–Apr 1939
8-Month
27.15"
(689.61mm)
25.83"
(656.08mm)
1.32"
(33.53mm)
81st Driest
Driest since:
1931
48th Wettest
Wettest since:
2019
Aug 1938–Apr 1939
9-Month
29.95"
(760.73mm)
29.69"
(754.13mm)
0.26"
(6.60mm)
65th Driest
Driest since:
1931
64th Wettest
Wettest since:
2019
Jul 1938–Apr 1939
10-Month
34.59"
(878.59mm)
33.89"
(860.81mm)
0.70"
(17.78mm)
70th Driest
Driest since:
1931
59th Wettest
Wettest since:
2019
Jun 1938–Apr 1939
11-Month
39.55"
(1,004.57mm)
38.05"
(966.47mm)
1.50"
(38.10mm)
78th Driest
Driest since:
1931
51st Wettest
Wettest since:
2019
May 1938–Apr 1939
12-Month
43.38"
(1,101.85mm)
41.95"
(1,065.53mm)
1.43"
(36.32mm)
72nd Driest
Driest since:
1931
57th Wettest
Wettest since:
2019
Nov 1937–Apr 1939
18-Month
60.05"
(1,525.27mm)
61.03"
(1,550.16mm)
-0.98"
(-24.89mm)
53rd Driest
Driest since:
1931
75th Wettest
Wettest since:
2019
May 1937–Apr 1939
24-Month
86.08"
(2,186.43mm)
83.91"
(2,131.31mm)
2.17"
(55.12mm)
73rd Driest
Driest since:
1966
55th Wettest
Wettest since:
2020
May 1936–Apr 1939
36-Month
129.24"
(3,282.70mm)
125.93"
(3,198.62mm)
3.31"
(84.08mm)
73rd Driest
Driest since:
1967
54th Wettest
Wettest since:
2020
May 1935–Apr 1939
48-Month
175.17"
(4,449.32mm)
167.93"
(4,265.42mm)
7.24"
(183.90mm)
87th Driest
Driest since:
1966
39th Wettest
Wettest since:
2020
May 1934–Apr 1939
60-Month
215.03"
(5,461.76mm)
209.83"
(5,329.68mm)
5.20"
(132.08mm)
75th Driest
Driest since:
1967
50th Wettest
Wettest since:
2022

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