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 2022. For more information, please see Climatological Rankings.


Delaware

Precipitation Rankings, May 2021

View Period (Months):All1234567891011121824364860
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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
May 2021
1-Month
3.04"
(77.22mm)
3.56"
(90.42mm)
-0.52"
(-13.20mm)
53rd Driest Driest since: 2020 1964
76th Wettest Wettest since: 2019 1948
Apr–May 2021
2-Month
5.32"
(135.13mm)
7.04"
(178.82mm)
-1.72"
(-43.69mm)
30th Driest Driest since: 2015 1942
99th Wettest Wettest since: 2020 1948
Mar–May 2021
3-Month
9.79"
(248.67mm)
11.01"
(279.65mm)
-1.22"
(-30.98mm)
47th Driest Driest since: 2015 1986
82nd Wettest Wettest since: 2020 1983
Feb–May 2021
4-Month
15.44"
(392.18mm)
14.06"
(357.12mm)
1.38"
(35.06mm)
92nd Driest Driest since: 2020 2006
37th Wettest Wettest since: 2018 1983
Jan–May 2021
5-Month
17.78"
(451.61mm)
17.55"
(445.77mm)
0.23"
(5.84mm)
79th Driest Driest since: 2020 2012
50th Wettest Wettest since: 2019 1948
Ties: 1906
Dec 2020–May 2021
6-Month
23.80"
(604.52mm)
21.01"
(533.65mm)
2.79"
(70.87mm)
101st Driest Driest since: 2020 1986
27th Wettest Wettest since: 2014 1984
Nov 2020–May 2021
7-Month
29.64"
(752.86mm)
24.08"
(611.63mm)
5.56"
(141.23mm)
111th Driest Driest since: 2020 1977
17th Wettest Wettest since: 2019 1984
Oct 2020–May 2021
8-Month
34.92"
(886.97mm)
27.23"
(691.64mm)
7.69"
(195.33mm)
114th Driest Driest since: 2020 2002
14th Wettest Wettest since: 2019 1984
Sep 2020–May 2021
9-Month
39.27"
(997.46mm)
30.82"
(782.83mm)
8.45"
(214.63mm)
117th Driest Driest since: 2020 2002
11th Wettest Wettest since: 2019 1984
Aug 2020–May 2021
10-Month
48.12"
(1,222.25mm)
35.40"
(899.16mm)
12.72"
(323.09mm)
126th Driest Driest since: 2020 1985
2nd Wettest Wettest since: 2010 2010
Jul 2020–May 2021
11-Month
54.49"
(1,384.05mm)
39.69"
(1,008.13mm)
14.80"
(375.92mm)
127th Driest Driest since: 2020 1931
1st Wettest Wettest to Date 2021
Jun 2020–May 2021
12-Month
57.00"
(1,447.80mm)
43.32"
(1,100.33mm)
13.68"
(347.47mm)
126th Driest Driest since: 2020 1965
2nd Wettest Wettest since: 2010 2010
Dec 2019–May 2021
18-Month
77.77"
(1,975.36mm)
64.29"
(1,632.97mm)
13.48"
(342.39mm)
118th Driest Driest since: 2020 1931
9th Wettest Wettest since: 2019 1949
Jun 2019–May 2021
24-Month
96.16"
(2,442.46mm)
86.54"
(2,198.12mm)
9.62"
(244.34mm)
101st Driest Driest since: 2020 1931
26th Wettest Wettest since: 2019 2019
Jun 2018–May 2021
36-Month
152.31"
(3,868.67mm)
129.85"
(3,298.19mm)
22.46"
(570.48mm)
124th Driest Driest since: 2020 1967
2nd Wettest Wettest since: 2005 2005
Jun 2017–May 2021
48-Month
202.26"
(5,137.40mm)
173.12"
(4,397.25mm)
29.14"
(740.15mm)
123rd Driest Driest since: 2020 1966
2nd Wettest Wettest since: 1939 1939
Jun 2016–May 2021
60-Month
248.14"
(6,302.76mm)
216.25"
(5,492.75mm)
31.89"
(810.01mm)
121st Driest Driest since: 2020 1967
3rd Wettest Wettest since: 1940 1939

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on September 28, 2022 from https://www.ncdc.noaa.gov/cag/