Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2021. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, August 2021

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
August 2021
1-Month
5.85"
(148.59mm)
3.87"
(98.30mm)
1.98"
(50.29mm)
118th Driest Driest since: 2020 1930
10th Wettest Wettest since: 2018 1955
Jul–Aug 2021
2-Month
12.11"
(307.59mm)
8.05"
(204.47mm)
4.06"
(103.12mm)
125th Driest Driest since: 2020 1930
3rd Wettest Wettest since: 2018 2018
Jun–Aug 2021
3-Month
15.64"
(397.26mm)
12.22"
(310.39mm)
3.42"
(86.87mm)
117th Driest Driest since: 2020 1966
11th Wettest Wettest since: 2018 2018
May–Aug 2021
4-Month
19.92"
(505.97mm)
16.15"
(410.21mm)
3.77"
(95.76mm)
110th Driest Driest since: 2020 1966
18th Wettest Wettest since: 2019 2018
Apr–Aug 2021
5-Month
22.71"
(576.83mm)
19.79"
(502.67mm)
2.92"
(74.16mm)
102nd Driest Driest since: 2020 1966
26th Wettest Wettest since: 2019 2018
Ties: 1903
Mar–Aug 2021
6-Month
25.52"
(648.21mm)
23.29"
(591.57mm)
2.23"
(56.64mm)
97th Driest Driest since: 2020 1966
31st Wettest Wettest since: 2019 2011
Feb–Aug 2021
7-Month
28.53"
(724.66mm)
25.89"
(657.61mm)
2.64"
(67.05mm)
100th Driest Driest since: 2020 1995
28th Wettest Wettest since: 2019 2018
Jan–Aug 2021
8-Month
30.33"
(770.38mm)
28.94"
(735.08mm)
1.39"
(35.30mm)
84th Driest Driest since: 2020 1963
44th Wettest Wettest since: 2019 2018
Dec 2020–Aug 2021
9-Month
34.77"
(883.16mm)
32.03"
(813.56mm)
2.74"
(69.60mm)
93rd Driest Driest since: 2020 1966
34th Wettest Wettest since: 2019 2018
Nov 2020–Aug 2021
10-Month
37.74"
(958.60mm)
35.24"
(895.10mm)
2.50"
(63.50mm)
90th Driest Driest since: 2020 1966
37th Wettest Wettest since: 2019 2019
Oct 2020–Aug 2021
11-Month
41.37"
(1,050.80mm)
38.42"
(975.87mm)
2.95"
(74.93mm)
94th Driest Driest since: 2016 1925
33rd Wettest Wettest since: 2020 2019
Sep 2020–Aug 2021
12-Month
43.83"
(1,113.28mm)
41.98"
(1,066.29mm)
1.85"
(46.99mm)
80th Driest Driest since: 2020 1965
47th Wettest Wettest since: 2019 2019
Mar 2020–Aug 2021
18-Month
67.19"
(1,706.63mm)
65.21"
(1,656.33mm)
1.98"
(50.30mm)
79th Driest Driest since: 2016 1966
48th Wettest Wettest since: 2020 2019
Sep 2019–Aug 2021
24-Month
87.48"
(2,221.99mm)
83.89"
(2,130.81mm)
3.59"
(91.18mm)
81st Driest Driest since: 2016 1966
45th Wettest Wettest since: 2020 2019
Sep 2018–Aug 2021
36-Month
147.85"
(3,755.39mm)
125.89"
(3,197.61mm)
21.96"
(557.78mm)
120th Driest Driest since: 2018 1966
5th Wettest Wettest since: 2020 2019
Sep 2017–Aug 2021
48-Month
200.15"
(5,083.81mm)
167.87"
(4,263.90mm)
32.28"
(819.91mm)
121st Driest Driest since: 2018 1966
3rd Wettest Wettest since: 2020 2020
Sep 2016–Aug 2021
60-Month
247.99"
(6,298.95mm)
209.80"
(5,328.92mm)
38.19"
(970.03mm)
122nd Driest Driest since: 2020 1966
1st Wettest Wettest to Date 2021

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 21, 2021 from https://www.ncdc.noaa.gov/cag/