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, September 1959

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
September 1959
1-Month
1.78"
(45.21mm)
3.59"
(91.19mm)
-1.81"
(-45.98mm)
11th Driest
Driest since:
1943
118th Wettest
Wettest since:
2011
Aug–Sep 1959
2-Month
6.04"
(153.42mm)
7.45"
(189.23mm)
-1.41"
(-35.81mm)
34th Driest
Driest since:
1943
95th Wettest
Wettest since:
2011
Jul–Sep 1959
3-Month
10.28"
(261.11mm)
11.64"
(295.66mm)
-1.36"
(-34.55mm)
35th Driest
Driest since:
1930
94th Wettest
Wettest since:
2018
Jun–Sep 1959
4-Month
13.96"
(354.58mm)
15.81"
(401.57mm)
-1.85"
(-46.99mm)
33rd Driest
Driest since:
1930
96th Wettest
Wettest since:
2018
May–Sep 1959
5-Month
16.34"
(415.04mm)
19.74"
(501.40mm)
-3.40"
(-86.36mm)
18th Driest
Driest since:
1930
111th Wettest
Wettest since:
2018
Apr–Sep 1959
6-Month
20.36"
(517.14mm)
23.38"
(593.85mm)
-3.02"
(-76.71mm)
23rd Driest
Driest since:
1930
106th Wettest
Wettest since:
2018
Mar–Sep 1959
7-Month
23.20"
(589.28mm)
26.87"
(682.50mm)
-3.67"
(-93.22mm)
21st Driest
Driest since:
1930
108th Wettest
Wettest since:
2011
Feb–Sep 1959
8-Month
25.77"
(654.56mm)
29.47"
(748.54mm)
-3.70"
(-93.98mm)
19th Driest
Driest since:
1995
110th Wettest
Wettest since:
2011
Jan–Sep 1959
9-Month
29.31"
(744.47mm)
32.52"
(826.01mm)
-3.21"
(-81.54mm)
24th Driest
Driest since:
1930
105th Wettest
Wettest since:
2018
Dec 1958–Sep 1959
10-Month
30.38"
(771.65mm)
35.62"
(904.75mm)
-5.24"
(-133.10mm)
10th Driest
Driest since:
1963
118th Wettest
Wettest since:
2011
Nov 1958–Sep 1959
11-Month
33.52"
(851.41mm)
38.83"
(986.28mm)
-5.31"
(-134.87mm)
13th Driest
Driest since:
1963
115th Wettest
Wettest since:
2011
Oct 1958–Sep 1959
12-Month
35.85"
(910.59mm)
42.00"
(1,066.80mm)
-6.15"
(-156.21mm)
13th Driest
Driest since:
1925
115th Wettest
Wettest since:
2011
Apr 1958–Sep 1959
18-Month
63.23"
(1,606.04mm)
65.31"
(1,658.87mm)
-2.08"
(-52.83mm)
36th Driest
Driest since:
1966
92nd Wettest
Wettest since:
2019
Oct 1957–Sep 1959
24-Month
82.68"
(2,100.07mm)
83.94"
(2,132.08mm)
-1.26"
(-32.01mm)
49th Driest
Driest since:
1966
78th Wettest
Wettest since:
2019
Oct 1956–Sep 1959
36-Month
118.15"
(3,001.01mm)
125.94"
(3,198.88mm)
-7.79"
(-197.87mm)
19th Driest
Driest since:
1965
107th Wettest
Wettest since:
2019
Oct 1955–Sep 1959
48-Month
166.52"
(4,229.61mm)
167.94"
(4,265.68mm)
-1.42"
(-36.07mm)
39th Driest
Driest since:
1966
86th Wettest
Wettest since:
2021
Oct 1954–Sep 1959
60-Month
209.42"
(5,319.27mm)
209.89"
(5,331.21mm)
-0.47"
(-11.94mm)
53rd Driest
Driest since:
1966
71st Wettest
Wettest since:
2021

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