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.

Maryland

Precipitation Rankings, May 2022

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 2022
1-Month 		5.64"
(143.26mm)		 3.73"
(94.74mm)		 1.91"
(48.52mm)		 110th Driest
Driest since:
 1964
19th Wettest
Wettest since:
 2018
Apr–May 2022
2-Month 		9.47"
(240.54mm)		 7.21"
(183.13mm)		 2.26"
(57.41mm)		 107th Driest
Driest since:
 1963
22nd Wettest
Wettest since:
 1983
Mar–May 2022
3-Month 		12.31"
(312.67mm)		 10.99"
(279.15mm)		 1.32"
(33.52mm)		 92nd Driest
Driest since:
 1986
37th Wettest
Wettest since:
 1983
Ties: 1972
Feb–May 2022
4-Month 		14.45"
(367.03mm)		 13.88"
(352.55mm)		 0.57"
(14.48mm)		 84th Driest
Driest since:
 2006
45th Wettest
Wettest since:
 1983
Jan–May 2022
5-Month 		18.29"
(464.57mm)		 17.23"
(437.64mm)		 1.06"
(26.93mm)		 89th Driest
Driest since:
 1969
40th Wettest
Wettest since:
 1998
Dec 2021–May 2022
6-Month 		19.38"
(492.25mm)		 20.52"
(521.21mm)		 -1.14"
(-28.96mm)		 46th Driest
Driest since:
 1986
82nd Wettest
Wettest since:
 1984
Nov 2021–May 2022
7-Month 		20.36"
(517.14mm)		 23.51"
(597.15mm)		 -3.15"
(-80.01mm)		 34th Driest
Driest since:
 1977
94th Wettest
Wettest since:
 1998
Oct 2021–May 2022
8-Month 		23.82"
(605.03mm)		 26.64"
(676.66mm)		 -2.82"
(-71.63mm)		 38th Driest
Driest since:
 1925
90th Wettest
Wettest since:
 1984
Ties: 1968
Sep 2021–May 2022
9-Month 		29.91"
(759.71mm)		 30.19"
(766.83mm)		 -0.28"
(-7.12mm)		 61st Driest
Driest since:
 2002
67th Wettest
Wettest since:
 2019
Aug 2021–May 2022
10-Month 		35.75"
(908.05mm)		 34.56"
(877.82mm)		 1.19"
(30.23mm)		 78th Driest
Driest since:
 1931
50th Wettest
Wettest since:
 2019
Jul 2021–May 2022
11-Month 		40.09"
(1,018.29mm)		 38.72"
(983.49mm)		 1.37"
(34.80mm)		 71st Driest
Driest since:
 1931
57th Wettest
Wettest since:
 2019
Jun 2021–May 2022
12-Month 		43.88"
(1,114.55mm)		 42.56"
(1,081.02mm)		 1.32"
(33.53mm)		 67th Driest
Driest since:
 1931
61st Wettest
Wettest since:
 2019
Dec 2020–May 2022
18-Month 		65.27"
(1,657.86mm)		 63.04"
(1,601.22mm)		 2.23"
(56.64mm)		 79th Driest
Driest since:
 1931
48th Wettest
Wettest since:
 2019
Jun 2020–May 2022
24-Month 		95.61"
(2,428.49mm)		 85.05"
(2,160.27mm)		 10.56"
(268.22mm)		 108th Driest
Driest since:
 1931
19th Wettest
Wettest since:
 2019
Jun 2019–May 2022
36-Month 		136.23"
(3,460.24mm)		 127.65"
(3,242.31mm)		 8.58"
(217.93mm)		 101st Driest
Driest since:
 1967
25th Wettest
Wettest since:
 2021
Jun 2018–May 2022
48-Month 		198.75"
(5,048.25mm)		 170.18"
(4,322.57mm)		 28.57"
(725.68mm)		 123rd Driest
Driest since:
 1966
2nd Wettest
Wettest since:
 2021
Jun 2017–May 2022
60-Month 		244.17"
(6,201.92mm)		 212.57"
(5,399.28mm)		 31.60"
(802.64mm)		 123rd Driest
Driest since:
 1969
1st Wettest
Wettest to Date
 2022

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