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, April 2018

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
April 2018
1-Month
3.75"
(95.25mm)
3.48"
(88.39mm)
0.27"
(6.86mm)
84th Driest
Driest since:
1985
45th Wettest
Wettest since:
1983
Mar–Apr 2018
2-Month
6.53"
(165.86mm)
7.26"
(184.40mm)
-0.73"
(-18.54mm)
43rd Driest
Driest since:
1915
86th Wettest
Wettest since:
1983
Feb–Apr 2018
3-Month
11.26"
(286.00mm)
10.15"
(257.81mm)
1.11"
(28.19mm)
93rd Driest
Driest since:
2006
36th Wettest
Wettest since:
1983
Jan–Apr 2018
4-Month
13.66"
(346.96mm)
13.50"
(342.90mm)
0.16"
(4.06mm)
77th Driest
Driest since:
1985
52nd Wettest
Wettest since:
1998
Dec 2017–Apr 2018
5-Month
14.61"
(371.09mm)
16.79"
(426.47mm)
-2.18"
(-55.38mm)
37th Driest
Driest since:
1985
91st Wettest
Wettest since:
1937
Nov 2017–Apr 2018
6-Month
16.57"
(420.88mm)
19.78"
(502.41mm)
-3.21"
(-81.53mm)
28th Driest
Driest since:
1977
100th Wettest
Wettest since:
1998
Ties: 1954
Oct 2017–Apr 2018
7-Month
20.36"
(517.14mm)
22.91"
(581.91mm)
-2.55"
(-64.77mm)
38th Driest
Driest since:
2002
90th Wettest
Wettest since:
1984
Ties: 1905
Sep 2017–Apr 2018
8-Month
22.37"
(568.20mm)
26.46"
(672.08mm)
-4.09"
(-103.88mm)
21st Driest
Driest since:
1931
107th Wettest
Wettest since:
2019
Aug 2017–Apr 2018
9-Month
27.94"
(709.68mm)
30.83"
(783.08mm)
-2.89"
(-73.40mm)
38th Driest
Driest since:
1931
90th Wettest
Wettest since:
2019
Jul 2017–Apr 2018
10-Month
35.70"
(906.78mm)
34.99"
(888.75mm)
0.71"
(18.03mm)
72nd Driest
Driest since:
1931
56th Wettest
Wettest since:
2019
Jun 2017–Apr 2018
11-Month
37.81"
(960.37mm)
38.83"
(986.28mm)
-1.02"
(-25.91mm)
53rd Driest
Driest since:
1931
75th Wettest
Wettest since:
2019
Ties: 1971
May 2017–Apr 2018
12-Month
43.66"
(1,108.96mm)
42.55"
(1,080.77mm)
1.11"
(28.19mm)
76th Driest
Driest since:
1931
52nd Wettest
Wettest since:
2019
Nov 2016–Apr 2018
18-Month
59.08"
(1,500.63mm)
62.30"
(1,582.42mm)
-3.22"
(-81.79mm)
40th Driest
Driest since:
1931
87th Wettest
Wettest since:
2004
May 2016–Apr 2018
24-Month
85.59"
(2,173.99mm)
85.06"
(2,160.52mm)
0.53"
(13.47mm)
64th Driest
Driest since:
1931
63rd Wettest
Wettest since:
2019
May 2015–Apr 2018
36-Month
129.68"
(3,293.87mm)
127.66"
(3,242.56mm)
2.02"
(51.31mm)
63rd Driest
Driest since:
1967
63rd Wettest
Wettest since:
2021
May 2014–Apr 2018
48-Month
172.65"
(4,385.31mm)
170.21"
(4,323.33mm)
2.44"
(61.98mm)
64th Driest
Driest since:
1968
61st Wettest
Wettest since:
2021
May 2013–Apr 2018
60-Month
222.20"
(5,643.88mm)
212.58"
(5,399.53mm)
9.62"
(244.35mm)
88th Driest
Driest since:
1967
36th Wettest
Wettest since:
2021

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