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.


Maryland

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
3.40"
(86.36mm)
3.73"
(94.74mm)
-0.33"
(-8.38mm)
56th Driest Driest since: 2020 1964
73rd Wettest Wettest since: 2019 2018
Apr–May 2021
2-Month
6.15"
(156.21mm)
7.21"
(183.13mm)
-1.06"
(-26.92mm)
42nd Driest Driest since: 2015 1963
87th Wettest Wettest since: 2020 1983
Mar–May 2021
3-Month
9.57"
(243.08mm)
10.99"
(279.15mm)
-1.42"
(-36.07mm)
35th Driest Driest since: 2013 1986
94th Wettest Wettest since: 2020 1983
Feb–May 2021
4-Month
13.91"
(353.31mm)
13.88"
(352.55mm)
0.03"
(0.76mm)
69th Driest Driest since: 2016 2006
60th Wettest Wettest since: 2020 1983
Ties: 1978
Jan–May 2021
5-Month
15.99"
(406.15mm)
17.23"
(437.64mm)
-1.24"
(-31.49mm)
47th Driest Driest since: 2013 1969
82nd Wettest Wettest since: 2020 1998
Ties: 1987
Dec 2020–May 2021
6-Month
21.40"
(543.56mm)
20.52"
(521.21mm)
0.88"
(22.35mm)
83rd Driest Driest since: 2020 1986
45th Wettest Wettest since: 2019 1984
Nov 2020–May 2021
7-Month
26.16"
(664.46mm)
23.51"
(597.15mm)
2.65"
(67.31mm)
95th Driest Driest since: 2020 1977
33rd Wettest Wettest since: 2019 1998
Oct 2020–May 2021
8-Month
30.80"
(782.32mm)
26.64"
(676.66mm)
4.16"
(105.66mm)
103rd Driest Driest since: 2020 1925
25th Wettest Wettest since: 2019 1984
Sep 2020–May 2021
9-Month
34.82"
(884.43mm)
30.19"
(766.83mm)
4.63"
(117.60mm)
101st Driest Driest since: 2020 2002
27th Wettest Wettest since: 2019 2019
Aug 2020–May 2021
10-Month
43.76"
(1,111.50mm)
34.56"
(877.82mm)
9.20"
(233.68mm)
123rd Driest Driest since: 2020 1931
5th Wettest Wettest since: 2019 2019
Jul 2020–May 2021
11-Month
48.13"
(1,222.50mm)
38.72"
(983.49mm)
9.41"
(239.01mm)
124th Driest Driest since: 2020 1931
4th Wettest Wettest since: 2019 2019
Jun 2020–May 2021
12-Month
51.74"
(1,314.20mm)
42.56"
(1,081.02mm)
9.18"
(233.18mm)
123rd Driest Driest since: 2020 1931
5th Wettest Wettest since: 2019 2019
Dec 2019–May 2021
18-Month
72.43"
(1,839.72mm)
63.04"
(1,601.22mm)
9.39"
(238.50mm)
112th Driest Driest since: 2020 1931
15th Wettest Wettest since: 2019 2019
Jun 2019–May 2021
24-Month
92.36"
(2,345.94mm)
85.05"
(2,160.27mm)
7.31"
(185.67mm)
100th Driest Driest since: 2018 1931
27th Wettest Wettest since: 2020 2019
Jun 2018–May 2021
36-Month
154.88"
(3,933.95mm)
127.65"
(3,242.31mm)
27.23"
(691.64mm)
125th Driest Driest since: 2020 1967
1st Wettest Wettest to Date 2021
Jun 2017–May 2021
48-Month
200.30"
(5,087.62mm)
170.18"
(4,322.57mm)
30.12"
(765.05mm)
124th Driest Driest since: 2020 1966
1st Wettest Wettest to Date 2021
Jun 2016–May 2021
60-Month
242.15"
(6,150.61mm)
212.57"
(5,399.28mm)
29.58"
(751.33mm)
122nd Driest Driest since: 2020 1969
2nd Wettest Wettest to Date 2022

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on October 6, 2022 from https://www.ncdc.noaa.gov/cag/