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 1977

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 1977
1-Month
3.12"
(79.25mm)
3.48"
(88.39mm)
-0.36"
(-9.14mm)
59th Driest
Driest since:
1985
70th Wettest
Wettest since:
1983
Mar–Apr 1977
2-Month
6.63"
(168.40mm)
7.26"
(184.40mm)
-0.63"
(-16.00mm)
47th Driest
Driest since:
1915
82nd Wettest
Wettest since:
1983
Feb–Apr 1977
3-Month
7.68"
(195.07mm)
10.15"
(257.81mm)
-2.47"
(-62.74mm)
19th Driest
Driest since:
2006
110th Wettest
Wettest since:
1983
Jan–Apr 1977
4-Month
9.54"
(242.32mm)
13.50"
(342.90mm)
-3.96"
(-100.58mm)
8th Driest
Driest since:
1985
121st Wettest
Wettest since:
1998
Dec 1976–Apr 1977
5-Month
11.78"
(299.21mm)
16.79"
(426.47mm)
-5.01"
(-127.26mm)
7th Driest
Driest since:
1985
121st Wettest
Wettest since:
1937
Nov 1976–Apr 1977
6-Month
12.77"
(324.36mm)
19.78"
(502.41mm)
-7.01"
(-178.05mm)
1st Driest
Driest since:
1977
127th Wettest
Wettest since:
1998
Oct 1976–Apr 1977
7-Month
20.84"
(529.34mm)
22.91"
(581.91mm)
-2.07"
(-52.57mm)
48th Driest
Driest since:
2002
80th Wettest
Wettest since:
1984
Sep 1976–Apr 1977
8-Month
25.56"
(649.22mm)
26.46"
(672.08mm)
-0.90"
(-22.86mm)
62nd Driest
Driest since:
1931
66th Wettest
Wettest since:
2019
Aug 1976–Apr 1977
9-Month
29.03"
(737.36mm)
30.83"
(783.08mm)
-1.80"
(-45.72mm)
52nd Driest
Driest since:
1931
76th Wettest
Wettest since:
2019
Jul 1976–Apr 1977
10-Month
32.98"
(837.69mm)
34.99"
(888.75mm)
-2.01"
(-51.06mm)
45th Driest
Driest since:
1931
83rd Wettest
Wettest since:
2019
Jun 1976–Apr 1977
11-Month
35.58"
(903.73mm)
38.83"
(986.28mm)
-3.25"
(-82.55mm)
39th Driest
Driest since:
1931
89th Wettest
Wettest since:
2019
May 1976–Apr 1977
12-Month
39.56"
(1,004.82mm)
42.55"
(1,080.77mm)
-2.99"
(-75.95mm)
38th Driest
Driest since:
1931
90th Wettest
Wettest since:
2019
Nov 1975–Apr 1977
18-Month
55.67"
(1,414.02mm)
62.30"
(1,582.42mm)
-6.63"
(-168.40mm)
20th Driest
Driest since:
1931
107th Wettest
Wettest since:
2004
May 1975–Apr 1977
24-Month
88.52"
(2,248.41mm)
85.06"
(2,160.52mm)
3.46"
(87.89mm)
81st Driest
Driest since:
1931
46th Wettest
Wettest since:
2019
May 1974–Apr 1977
36-Month
132.03"
(3,353.56mm)
127.66"
(3,242.56mm)
4.37"
(111.00mm)
79th Driest
Driest since:
1967
47th Wettest
Wettest since:
2021
May 1973–Apr 1977
48-Month
173.12"
(4,397.25mm)
170.21"
(4,323.33mm)
2.91"
(73.92mm)
68th Driest
Driest since:
1968
57th Wettest
Wettest since:
2021
May 1972–Apr 1977
60-Month
228.17"
(5,795.52mm)
212.58"
(5,399.53mm)
15.59"
(395.99mm)
101st Driest
Driest since:
1967
23rd Wettest
Wettest since:
2021

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