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 October 2019. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, May 1921

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1921
1-Month
4.09"
(103.89mm)
3.93"
(99.82mm)
0.16"
(4.07mm)
72nd Driest Driest since: 1920 1964
54th Wettest Wettest since: 1919 1989
Apr–May 1921
2-Month
7.26"
(184.40mm)
7.57"
(192.28mm)
-0.31"
(-7.88mm)
58th Driest Driest since: 1920 1926
68th Wettest Wettest since: 1919 2011
Ties: 1916
Mar–May 1921
3-Month
10.59"
(268.99mm)
11.06"
(280.92mm)
-0.47"
(-11.93mm)
57th Driest Driest since: 1920 1926
69th Wettest Wettest since: 1919 2011
Feb–May 1921
4-Month
13.15"
(334.01mm)
13.66"
(346.96mm)
-0.51"
(-12.95mm)
56th Driest Driest since: 1920 1941
70th Wettest Wettest since: 1919 2011
Jan–May 1921
5-Month
15.67"
(398.02mm)
16.71"
(424.43mm)
-1.04"
(-26.41mm)
50th Driest Driest since: 1920 1941
76th Wettest Wettest since: 1919 2011
Dec 1920–May 1921
6-Month
18.89"
(479.81mm)
19.81"
(503.17mm)
-0.92"
(-23.36mm)
49th Driest Driest since: 1920 1941
76th Wettest Wettest since: 1919 2011
Nov 1920–May 1921
7-Month
22.66"
(575.56mm)
23.02"
(584.71mm)
-0.36"
(-9.15mm)
61st Driest Driest since: 1920 1934
64th Wettest Wettest since: 1916 1952
Ties: 1940
Oct 1920–May 1921
8-Month
24.36"
(618.74mm)
26.19"
(665.23mm)
-1.83"
(-46.49mm)
34th Driest Driest since: 1917 1925
91st Wettest Wettest since: 1920 2011
Sep 1920–May 1921
9-Month
28.38"
(720.85mm)
29.75"
(755.65mm)
-1.37"
(-34.80mm)
41st Driest Driest since: 1920 1941
84th Wettest Wettest since: 1919 2019
Aug 1920–May 1921
10-Month
32.92"
(836.17mm)
33.62"
(853.95mm)
-0.70"
(-17.78mm)
53rd Driest Driest since: 1917 1931
72nd Wettest Wettest since: 1920 2019
Jul 1920–May 1921
11-Month
37.52"
(953.01mm)
37.82"
(960.63mm)
-0.30"
(-7.62mm)
54th Driest Driest since: 1919 1931
71st Wettest Wettest since: 1920 2019
Jun 1920–May 1921
12-Month
42.56"
(1,081.02mm)
41.97"
(1,066.04mm)
0.59"
(14.98mm)
63rd Driest Driest since: 1919 1931
62nd Wettest Wettest since: 1920 2019
Dec 1919–May 1921
18-Month
59.62"
(1,514.35mm)
61.76"
(1,568.70mm)
-2.14"
(-54.35mm)
37th Driest Driest since: 1915 1931
87th Wettest Wettest since: 1920 2019
Jun 1919–May 1921
24-Month
85.17"
(2,163.32mm)
83.91"
(2,131.31mm)
1.26"
(32.01mm)
65th Driest Driest since: 1920 1931
59th Wettest Wettest since: 1914 2019
Jun 1918–May 1921
36-Month
125.07"
(3,176.78mm)
125.93"
(3,198.62mm)
-0.86"
(-21.84mm)
49th Driest Driest since: 1919 1965
74th Wettest Wettest since: 1920 2019
Jun 1917–May 1921
48-Month
169.67"
(4,309.62mm)
167.92"
(4,265.17mm)
1.75"
(44.45mm)
64th Driest Driest since: 1920 1966
58th Wettest Wettest since: 1916 2019
Jun 1916–May 1921
60-Month
208.85"
(5,304.79mm)
209.84"
(5,329.94mm)
-0.99"
(-25.15mm)
43rd Driest Driest since: 1919 1967
78th Wettest Wettest since: 1920 2008

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 20, 2019 from https://www.ncdc.noaa.gov/cag/