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 1971

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 1971
1-Month
6.64"
(168.66mm)
3.73"
(94.74mm)
2.91"
(73.92mm)
123rd Driest
Driest since:
1964
6th Wettest
Wettest since:
2018
Apr–May 1971
2-Month
8.75"
(222.25mm)
7.21"
(183.13mm)
1.54"
(39.12mm)
101st Driest
Driest since:
1963
28th Wettest
Wettest since:
1983
Ties: 1960
Mar–May 1971
3-Month
11.11"
(282.19mm)
10.99"
(279.15mm)
0.12"
(3.04mm)
73rd Driest
Driest since:
1986
56th Wettest
Wettest since:
1983
Ties: 1898
Feb–May 1971
4-Month
16.27"
(413.26mm)
13.88"
(352.55mm)
2.39"
(60.71mm)
107th Driest
Driest since:
2006
22nd Wettest
Wettest since:
1983
Jan–May 1971
5-Month
19.28"
(489.71mm)
17.23"
(437.64mm)
2.05"
(52.07mm)
98th Driest
Driest since:
1969
31st Wettest
Wettest since:
1998
Dec 1970–May 1971
6-Month
22.83"
(579.88mm)
20.52"
(521.21mm)
2.31"
(58.67mm)
97th Driest
Driest since:
1986
31st Wettest
Wettest since:
1984
Nov 1970–May 1971
7-Month
27.16"
(689.86mm)
23.51"
(597.15mm)
3.65"
(92.71mm)
102nd Driest
Driest since:
1977
26th Wettest
Wettest since:
1998
Oct 1970–May 1971
8-Month
29.99"
(761.75mm)
26.64"
(676.66mm)
3.35"
(85.09mm)
100th Driest
Driest since:
1925
28th Wettest
Wettest since:
1984
Sep 1970–May 1971
9-Month
31.66"
(804.16mm)
30.19"
(766.83mm)
1.47"
(37.33mm)
81st Driest
Driest since:
2002
47th Wettest
Wettest since:
2019
Aug 1970–May 1971
10-Month
34.27"
(870.46mm)
34.56"
(877.82mm)
-0.29"
(-7.36mm)
61st Driest
Driest since:
1931
67th Wettest
Wettest since:
2019
Jul 1970–May 1971
11-Month
39.98"
(1,015.49mm)
38.72"
(983.49mm)
1.26"
(32.00mm)
70th Driest
Driest since:
1931
58th Wettest
Wettest since:
2019
Jun 1970–May 1971
12-Month
44.45"
(1,129.03mm)
42.56"
(1,081.02mm)
1.89"
(48.01mm)
73rd Driest
Driest since:
1931
55th Wettest
Wettest since:
2019
Dec 1969–May 1971
18-Month
66.82"
(1,697.23mm)
63.04"
(1,601.22mm)
3.78"
(96.01mm)
90th Driest
Driest since:
1931
37th Wettest
Wettest since:
2019
Jun 1969–May 1971
24-Month
89.56"
(2,274.82mm)
85.05"
(2,160.27mm)
4.51"
(114.55mm)
83rd Driest
Driest since:
1931
44th Wettest
Wettest since:
2019
Jun 1968–May 1971
36-Month
122.98"
(3,123.69mm)
127.65"
(3,242.31mm)
-4.67"
(-118.62mm)
37th Driest
Driest since:
1967
89th Wettest
Wettest since:
2021
Jun 1967–May 1971
48-Month
164.56"
(4,179.82mm)
170.18"
(4,322.57mm)
-5.62"
(-142.75mm)
33rd Driest
Driest since:
1966
92nd Wettest
Wettest since:
2021
Jun 1966–May 1971
60-Month
199.97"
(5,079.24mm)
212.57"
(5,399.28mm)
-12.60"
(-320.04mm)
17th Driest
Driest since:
1969
107th Wettest
Wettest since:
2022

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