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 1947

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1947
1-Month
3.90"
(99.06mm)
3.64"
(92.46mm)
0.26"
(6.60mm)
79th Driest
Driest since:
1946
50th Wettest
Wettest since:
2011
Mar–Apr 1947
2-Month
6.18"
(156.97mm)
7.14"
(181.36mm)
-0.96"
(-24.39mm)
44th Driest
Driest since:
1915
85th Wettest
Wettest since:
2011
Feb–Apr 1947
3-Month
7.53"
(191.26mm)
9.73"
(247.14mm)
-2.20"
(-55.88mm)
19th Driest
Driest since:
1941
110th Wettest
Wettest since:
2011
Jan–Apr 1947
4-Month
11.24"
(285.50mm)
12.78"
(324.61mm)
-1.54"
(-39.11mm)
34th Driest
Driest since:
1941
95th Wettest
Wettest since:
2011
Dec 1946–Apr 1947
5-Month
13.58"
(344.93mm)
15.88"
(403.35mm)
-2.30"
(-58.42mm)
19th Driest
Driest since:
1941
109th Wettest
Wettest since:
2011
Nov 1946–Apr 1947
6-Month
14.94"
(379.48mm)
19.09"
(484.89mm)
-4.15"
(-105.41mm)
7th Driest
Driest since:
1931
121st Wettest
Wettest since:
1952
Oct 1946–Apr 1947
7-Month
18.60"
(472.44mm)
22.27"
(565.66mm)
-3.67"
(-93.22mm)
17th Driest
Driest since:
1925
111th Wettest
Wettest since:
2011
Sep 1946–Apr 1947
8-Month
21.94"
(557.28mm)
25.83"
(656.08mm)
-3.89"
(-98.80mm)
17th Driest
Driest since:
1931
111th Wettest
Wettest since:
2019
Aug 1946–Apr 1947
9-Month
25.90"
(657.86mm)
29.69"
(754.13mm)
-3.79"
(-96.27mm)
20th Driest
Driest since:
1931
108th Wettest
Wettest since:
2019
Ties: 1915
Jul 1946–Apr 1947
10-Month
29.84"
(757.94mm)
33.89"
(860.81mm)
-4.05"
(-102.87mm)
20th Driest
Driest since:
1931
108th Wettest
Wettest since:
2019
Jun 1946–Apr 1947
11-Month
35.90"
(911.86mm)
38.05"
(966.47mm)
-2.15"
(-54.61mm)
40th Driest
Driest since:
1931
88th Wettest
Wettest since:
2019
May 1946–Apr 1947
12-Month
43.21"
(1,097.53mm)
41.95"
(1,065.53mm)
1.26"
(32.00mm)
69th Driest
Driest since:
1931
59th Wettest
Wettest since:
2019
Nov 1945–Apr 1947
18-Month
59.33"
(1,506.98mm)
61.03"
(1,550.16mm)
-1.70"
(-43.18mm)
44th Driest
Driest since:
1931
83rd Wettest
Wettest since:
2019
May 1945–Apr 1947
24-Month
87.72"
(2,228.09mm)
83.91"
(2,131.31mm)
3.81"
(96.78mm)
85th Driest
Driest since:
1966
42nd Wettest
Wettest since:
2020
May 1944–Apr 1947
36-Month
129.17"
(3,280.92mm)
125.93"
(3,198.62mm)
3.24"
(82.30mm)
72nd Driest
Driest since:
1967
54th Wettest
Wettest since:
2020
May 1943–Apr 1947
48-Month
168.91"
(4,290.31mm)
167.93"
(4,265.42mm)
0.98"
(24.89mm)
59th Driest
Driest since:
1966
66th Wettest
Wettest since:
2020
May 1942–Apr 1947
60-Month
217.01"
(5,512.05mm)
209.83"
(5,329.68mm)
7.18"
(182.37mm)
80th Driest
Driest since:
1967
44th Wettest
Wettest since:
2022

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