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 1929

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1929
1-Month
5.03"
(127.76mm)
3.93"
(99.82mm)
1.10"
(27.94mm)
96th Driest
Driest since:
1964
33rd Wettest
Wettest since:
1989
Apr–May 1929
2-Month
11.42"
(290.07mm)
7.57"
(192.28mm)
3.85"
(97.79mm)
126th Driest
Driest since:
1926
3rd Wettest
Wettest to Date
2011
Mar–May 1929
3-Month
14.26"
(362.20mm)
11.06"
(280.92mm)
3.20"
(81.28mm)
118th Driest
Driest since:
1926
11th Wettest
Wettest since:
2011
Feb–May 1929
4-Month
16.99"
(431.55mm)
13.66"
(346.96mm)
3.33"
(84.59mm)
115th Driest
Driest since:
1941
14th Wettest
Wettest since:
2011
Jan–May 1929
5-Month
20.41"
(518.41mm)
16.71"
(424.43mm)
3.70"
(93.98mm)
119th Driest
Driest since:
1941
10th Wettest
Wettest since:
2011
Dec 1928–May 1929
6-Month
21.54"
(547.12mm)
19.81"
(503.17mm)
1.73"
(43.95mm)
90th Driest
Driest since:
1941
38th Wettest
Wettest since:
2011
Nov 1928–May 1929
7-Month
24.01"
(609.85mm)
23.02"
(584.71mm)
0.99"
(25.14mm)
81st Driest
Driest since:
1934
47th Wettest
Wettest since:
1952
Oct 1928–May 1929
8-Month
26.00"
(660.40mm)
26.19"
(665.23mm)
-0.19"
(-4.83mm)
61st Driest
Driest since:
1925
67th Wettest
Wettest since:
2011
Sep 1928–May 1929
9-Month
28.26"
(717.80mm)
29.75"
(755.65mm)
-1.49"
(-37.85mm)
41st Driest
Driest since:
1941
87th Wettest
Wettest since:
2019
Aug 1928–May 1929
10-Month
32.64"
(829.06mm)
33.62"
(853.95mm)
-0.98"
(-24.89mm)
50th Driest
Driest since:
1931
78th Wettest
Wettest since:
2019
Jul 1928–May 1929
11-Month
38.02"
(965.71mm)
37.82"
(960.63mm)
0.20"
(5.08mm)
58th Driest
Driest since:
1931
70th Wettest
Wettest since:
2019
Ties: 2003
Jun 1928–May 1929
12-Month
46.04"
(1,169.42mm)
41.97"
(1,066.04mm)
4.07"
(103.38mm)
99th Driest
Driest since:
1931
29th Wettest
Wettest since:
2019
Ties: 1991
Dec 1927–May 1929
18-Month
66.77"
(1,695.96mm)
61.76"
(1,568.70mm)
5.01"
(127.26mm)
99th Driest
Driest since:
1931
28th Wettest
Wettest since:
2019
Jun 1927–May 1929
24-Month
92.29"
(2,344.17mm)
83.91"
(2,131.31mm)
8.38"
(212.86mm)
105th Driest
Driest since:
1931
22nd Wettest
Wettest since:
2019
Jun 1926–May 1929
36-Month
140.20"
(3,561.08mm)
125.93"
(3,198.62mm)
14.27"
(362.46mm)
112th Driest
Driest since:
1965
14th Wettest
Wettest to Date
2020
Jun 1925–May 1929
48-Month
177.00"
(4,495.80mm)
167.92"
(4,265.17mm)
9.08"
(230.63mm)
93rd Driest
Driest since:
1966
32nd Wettest
Wettest since:
2020
Jun 1924–May 1929
60-Month
213.88"
(5,432.55mm)
209.84"
(5,329.94mm)
4.04"
(102.61mm)
66th Driest
Driest since:
1967
58th Wettest
Wettest since:
2022

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