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, August 2021

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 2021
1-Month
5.89"
(149.61mm)
3.87"
(98.30mm)
2.02"
(51.31mm)
119th Driest
Driest since:
1930
10th Wettest
Wettest since:
1955
Jul–Aug 2021
2-Month
12.13"
(308.10mm)
8.05"
(204.47mm)
4.08"
(103.63mm)
126th Driest
Driest since:
1930
3rd Wettest
Wettest since:
2018
Jun–Aug 2021
3-Month
15.67"
(398.02mm)
12.22"
(310.39mm)
3.45"
(87.63mm)
118th Driest
Driest since:
1966
11th Wettest
Wettest since:
2018
May–Aug 2021
4-Month
19.95"
(506.73mm)
16.15"
(410.21mm)
3.80"
(96.52mm)
112th Driest
Driest since:
1966
17th Wettest
Wettest since:
2018
Ties: 1928
Apr–Aug 2021
5-Month
22.74"
(577.60mm)
19.79"
(502.67mm)
2.95"
(74.93mm)
103rd Driest
Driest since:
1966
26th Wettest
Wettest since:
2018
Mar–Aug 2021
6-Month
25.55"
(648.97mm)
23.29"
(591.57mm)
2.26"
(57.40mm)
98th Driest
Driest since:
1966
31st Wettest
Wettest since:
2011
Feb–Aug 2021
7-Month
28.57"
(725.68mm)
25.89"
(657.61mm)
2.68"
(68.07mm)
102nd Driest
Driest since:
1995
27th Wettest
Wettest since:
2018
Jan–Aug 2021
8-Month
30.36"
(771.14mm)
28.94"
(735.08mm)
1.42"
(36.06mm)
85th Driest
Driest since:
1963
44th Wettest
Wettest since:
2018
Dec 2020–Aug 2021
9-Month
34.80"
(883.92mm)
32.03"
(813.56mm)
2.77"
(70.36mm)
95th Driest
Driest since:
1966
33rd Wettest
Wettest since:
2018
Nov 2020–Aug 2021
10-Month
37.77"
(959.36mm)
35.24"
(895.10mm)
2.53"
(64.26mm)
92nd Driest
Driest since:
1966
36th Wettest
Wettest since:
2019
Oct 2020–Aug 2021
11-Month
41.40"
(1,051.56mm)
38.42"
(975.87mm)
2.98"
(75.69mm)
95th Driest
Driest since:
1925
33rd Wettest
Wettest since:
2019
Sep 2020–Aug 2021
12-Month
43.86"
(1,114.04mm)
41.98"
(1,066.29mm)
1.88"
(47.75mm)
80th Driest
Driest since:
1965
48th Wettest
Wettest since:
2019
Mar 2020–Aug 2021
18-Month
67.22"
(1,707.39mm)
65.21"
(1,656.33mm)
2.01"
(51.06mm)
79th Driest
Driest since:
1966
49th Wettest
Wettest since:
2019
Sep 2019–Aug 2021
24-Month
87.51"
(2,222.75mm)
83.89"
(2,130.81mm)
3.62"
(91.94mm)
81st Driest
Driest since:
1966
46th Wettest
Wettest since:
2019
Sep 2018–Aug 2021
36-Month
147.88"
(3,756.15mm)
125.89"
(3,197.61mm)
21.99"
(558.54mm)
121st Driest
Driest since:
1966
5th Wettest
Wettest since:
2019
Sep 2017–Aug 2021
48-Month
200.18"
(5,084.57mm)
167.87"
(4,263.90mm)
32.31"
(820.67mm)
122nd Driest
Driest since:
1966
3rd Wettest
Wettest since:
2020
Sep 2016–Aug 2021
60-Month
248.02"
(6,299.71mm)
209.80"
(5,328.92mm)
38.22"
(970.79mm)
123rd Driest
Driest since:
1966
1st Wettest
Wettest to Date
2021

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