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, December 1931

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1931
1-Month
3.09"
(78.49mm)
3.11"
(78.99mm)
-0.02"
(-0.50mm)
62nd Driest
Driest since:
1955
66th Wettest
Wettest since:
1990
Ties: 1953
Nov–Dec 1931
2-Month
4.78"
(121.41mm)
6.29"
(159.77mm)
-1.51"
(-38.36mm)
26th Driest
Driest since:
1917
102nd Wettest
Wettest since:
1972
Oct–Dec 1931
3-Month
6.51"
(165.35mm)
9.46"
(240.28mm)
-2.95"
(-74.93mm)
8th Driest
Driest since:
1924
120th Wettest
Wettest since:
1927
Sep–Dec 1931
4-Month
9.81"
(249.17mm)
13.04"
(331.22mm)
-3.23"
(-82.05mm)
14th Driest
Driest since:
1908
114th Wettest
Wettest since:
2018
Aug–Dec 1931
5-Month
13.44"
(341.38mm)
16.91"
(429.51mm)
-3.47"
(-88.13mm)
17th Driest
Driest since:
1930
111th Wettest
Wettest since:
2018
Jul–Dec 1931
6-Month
18.67"
(474.22mm)
21.10"
(535.94mm)
-2.43"
(-61.72mm)
28th Driest
Driest since:
1930
100th Wettest
Wettest since:
2018
Jun–Dec 1931
7-Month
22.35"
(567.69mm)
25.27"
(641.86mm)
-2.92"
(-74.17mm)
25th Driest
Driest since:
1930
103rd Wettest
Wettest since:
2018
May–Dec 1931
8-Month
27.84"
(707.14mm)
29.19"
(741.43mm)
-1.35"
(-34.29mm)
37th Driest
Driest since:
1930
91st Wettest
Wettest since:
2018
Apr–Dec 1931
9-Month
31.43"
(798.32mm)
32.84"
(834.14mm)
-1.41"
(-35.82mm)
41st Driest
Driest since:
1930
87th Wettest
Wettest since:
2018
Mar–Dec 1931
10-Month
34.29"
(870.97mm)
36.33"
(922.78mm)
-2.04"
(-51.81mm)
37th Driest
Driest since:
1930
91st Wettest
Wettest since:
2011
Feb–Dec 1931
11-Month
36.30"
(922.02mm)
38.93"
(988.82mm)
-2.63"
(-66.80mm)
32nd Driest
Driest since:
1930
96th Wettest
Wettest since:
2018
Jan–Dec 1931
12-Month
37.81"
(960.37mm)
41.98"
(1,066.29mm)
-4.17"
(-105.92mm)
19th Driest
Driest since:
1930
109th Wettest
Wettest since:
2018
Jul 1930–Dec 1931
18-Month
48.51"
(1,232.15mm)
63.09"
(1,602.49mm)
-14.58"
(-370.34mm)
1st Driest
Driest since:
1931
126th Wettest
Wettest since:
2019
Jan 1930–Dec 1931
24-Month
66.67"
(1,693.42mm)
83.92"
(2,131.57mm)
-17.25"
(-438.15mm)
1st Driest
Driest since:
1931
126th Wettest
Wettest since:
2019
Jan 1929–Dec 1931
36-Month
111.71"
(2,837.43mm)
125.86"
(3,196.84mm)
-14.15"
(-359.41mm)
6th Driest
Driest since:
1965
120th Wettest
Wettest since:
2019
Jan 1928–Dec 1931
48-Month
153.69"
(3,903.73mm)
167.85"
(4,263.39mm)
-14.16"
(-359.66mm)
9th Driest
Driest since:
1966
116th Wettest
Wettest since:
2020
Jan 1927–Dec 1931
60-Month
200.87"
(5,102.10mm)
209.87"
(5,330.70mm)
-9.00"
(-228.60mm)
17th Driest
Driest since:
1966
107th Wettest
Wettest since:
2021

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