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 1930

View Period (Months):
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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 1930
1-Month
2.23"
(56.64mm)
3.73"
(94.74mm)
-1.50"
(-38.10mm)
21st Driest
Driest since:
1964
108th Wettest
Wettest since:
2018
Ties: 1963
Apr–May 1930
2-Month
4.67"
(118.62mm)
7.21"
(183.13mm)
-2.54"
(-64.51mm)
11th Driest
Driest since:
1963
118th Wettest
Wettest since:
1983
Mar–May 1930
3-Month
6.67"
(169.42mm)
10.99"
(279.15mm)
-4.32"
(-109.73mm)
5th Driest
Driest since:
1986
124th Wettest
Wettest since:
1983
Feb–May 1930
4-Month
8.63"
(219.20mm)
13.88"
(352.55mm)
-5.25"
(-133.35mm)
3rd Driest
Driest since:
2006
126th Wettest
Wettest since:
1983
Jan–May 1930
5-Month
11.54"
(293.12mm)
17.23"
(437.64mm)
-5.69"
(-144.52mm)
3rd Driest
Driest since:
1969
126th Wettest
Wettest since:
1998
Dec 1929–May 1930
6-Month
13.92"
(353.57mm)
20.52"
(521.21mm)
-6.60"
(-167.64mm)
4th Driest
Driest since:
1986
124th Wettest
Wettest since:
1984
Nov 1929–May 1930
7-Month
16.48"
(418.59mm)
23.51"
(597.15mm)
-7.03"
(-178.56mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1998
Oct 1929–May 1930
8-Month
21.73"
(551.94mm)
26.64"
(676.66mm)
-4.91"
(-124.72mm)
12th Driest
Driest since:
1925
116th Wettest
Wettest since:
1984
Sep 1929–May 1930
9-Month
25.00"
(635.00mm)
30.19"
(766.83mm)
-5.19"
(-131.83mm)
16th Driest
Driest since:
2002
112th Wettest
Wettest since:
2019
Ties: 1955
Aug 1929–May 1930
10-Month
27.60"
(701.04mm)
34.56"
(877.82mm)
-6.96"
(-176.78mm)
11th Driest
Driest since:
1931
117th Wettest
Wettest since:
2019
Jul 1929–May 1930
11-Month
29.39"
(746.51mm)
38.72"
(983.49mm)
-9.33"
(-236.98mm)
6th Driest
Driest since:
1931
122nd Wettest
Wettest since:
2019
Jun 1929–May 1930
12-Month
34.47"
(875.54mm)
42.56"
(1,081.02mm)
-8.09"
(-205.48mm)
9th Driest
Driest since:
1931
119th Wettest
Wettest since:
2019
Ties: 1955
Dec 1928–May 1930
18-Month
55.25"
(1,403.35mm)
63.04"
(1,601.22mm)
-7.79"
(-197.87mm)
18th Driest
Driest since:
1931
109th Wettest
Wettest since:
2019
Jun 1928–May 1930
24-Month
81.56"
(2,071.62mm)
85.05"
(2,160.27mm)
-3.49"
(-88.65mm)
35th Driest
Driest since:
1931
92nd Wettest
Wettest since:
2019
Jun 1927–May 1930
36-Month
122.92"
(3,122.17mm)
127.65"
(3,242.31mm)
-4.73"
(-120.14mm)
35th Driest
Driest since:
1967
91st Wettest
Wettest since:
2021
Jun 1926–May 1930
48-Month
168.14"
(4,270.76mm)
170.18"
(4,322.57mm)
-2.04"
(-51.81mm)
42nd Driest
Driest since:
1966
83rd Wettest
Wettest since:
2021
Jun 1925–May 1930
60-Month
202.96"
(5,155.18mm)
212.57"
(5,399.28mm)
-9.61"
(-244.10mm)
22nd Driest
Driest since:
1969
102nd Wettest
Wettest since:
2022

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