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 2004

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 2004
1-Month
5.44"
(138.18mm)
3.93"
(99.82mm)
1.51"
(38.36mm)
105th Driest
Driest since:
1964
24th Wettest
Wettest since:
1989
Apr–May 2004
2-Month
10.31"
(261.87mm)
7.57"
(192.28mm)
2.74"
(69.59mm)
118th Driest
Driest since:
1926
11th Wettest
Wettest since:
2011
Mar–May 2004
3-Month
13.15"
(334.01mm)
11.06"
(280.92mm)
2.09"
(53.09mm)
109th Driest
Driest since:
1926
20th Wettest
Wettest since:
2011
Feb–May 2004
4-Month
15.41"
(391.41mm)
13.66"
(346.96mm)
1.75"
(44.45mm)
100th Driest
Driest since:
1941
29th Wettest
Wettest since:
2011
Jan–May 2004
5-Month
18.70"
(474.98mm)
16.71"
(424.43mm)
1.99"
(50.55mm)
99th Driest
Driest since:
1941
30th Wettest
Wettest since:
2011
Ties: 1901
Dec 2003–May 2004
6-Month
22.87"
(580.90mm)
19.81"
(503.17mm)
3.06"
(77.73mm)
109th Driest
Driest since:
1941
19th Wettest
Wettest since:
2011
Nov 2003–May 2004
7-Month
27.17"
(690.12mm)
23.02"
(584.71mm)
4.15"
(105.41mm)
112th Driest
Driest since:
1934
16th Wettest
Wettest since:
1952
Oct 2003–May 2004
8-Month
31.36"
(796.54mm)
26.19"
(665.23mm)
5.17"
(131.31mm)
115th Driest
Driest since:
1925
13th Wettest
Wettest since:
2011
Sep 2003–May 2004
9-Month
38.49"
(977.65mm)
29.75"
(755.65mm)
8.74"
(222.00mm)
124th Driest
Driest since:
1941
4th Wettest
Wettest since:
2019
Aug 2003–May 2004
10-Month
44.04"
(1,118.62mm)
33.62"
(853.95mm)
10.42"
(264.67mm)
125th Driest
Driest since:
1931
3rd Wettest
Wettest to Date
2019
Jul 2003–May 2004
11-Month
49.68"
(1,261.87mm)
37.82"
(960.63mm)
11.86"
(301.24mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest to Date
2019
Jun 2003–May 2004
12-Month
55.79"
(1,417.07mm)
41.97"
(1,066.04mm)
13.82"
(351.03mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest to Date
2019
Dec 2002–May 2004
18-Month
76.08"
(1,932.43mm)
61.76"
(1,568.70mm)
14.32"
(363.73mm)
124th Driest
Driest since:
1931
3rd Wettest
Wettest to Date
2019
Jun 2002–May 2004
24-Month
98.66"
(2,505.96mm)
83.91"
(2,131.31mm)
14.75"
(374.65mm)
122nd Driest
Driest since:
1931
5th Wettest
Wettest to Date
2019
Jun 2001–May 2004
36-Month
136.84"
(3,475.74mm)
125.93"
(3,198.62mm)
10.91"
(277.12mm)
102nd Driest
Driest since:
1965
24th Wettest
Wettest since:
2020
Jun 2000–May 2004
48-Month
173.84"
(4,415.54mm)
167.92"
(4,265.17mm)
5.92"
(150.37mm)
81st Driest
Driest since:
1966
44th Wettest
Wettest since:
2020
Jun 1999–May 2004
60-Month
214.96"
(5,459.98mm)
209.84"
(5,329.94mm)
5.12"
(130.04mm)
73rd Driest
Driest since:
1967
51st Wettest
Wettest since:
2022

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