National Rankings

National Data Info
Please note, Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

April 1988 Precipitation Rankings

View Period (Months):
  • Record Driest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Wettest
PeriodValue
1901-2000
Mean
AnomalyRank
(1895-2025)
Driest/Wettest
Since
Record
April 1988
1-Month
2.32in
(58.93mm)
2.52in
(64.01mm)
-0.20in45th Driest
Driest since:
1987
86th Wettest
Wettest since:
1957
Mar–Apr 1988
2-Month
4.36in
(110.74mm)
5.02in
(127.51mm)
-0.66in19th Driest
Driest since:
1910
112th Wettest
Wettest since:
1973
Feb–Apr 1988
3-Month
5.88in
(149.35mm)
7.16in
(181.86mm)
-1.28in6th Driest
Driest since:
1910
125th Wettest
Wettest since:
1983
Jan–Apr 1988
4-Month
7.85in
(199.39mm)
9.47in
(240.54mm)
-1.62in6th Driest
Driest since:
1910
125th Wettest
Wettest since:
1998
Dec 1987–Apr 1988
5-Month
10.72in
(272.29mm)
11.81in
(299.97mm)
-1.09in25th Driest
Driest since:
1931
105th Wettest
Wettest since:
1983
Nov 1987–Apr 1988
6-Month
13.26in
(336.80mm)
14.04in
(356.62mm)
-0.78in37th Driest
Driest since:
1977
93rd Wettest
Wettest since:
1983
Oct 1987–Apr 1988
7-Month
14.41in
(366.01mm)
16.21in
(411.73mm)
-1.80in15th Driest
Driest since:
1981
115th Wettest
Wettest since:
1983
Ties: 1910
Sep 1987–Apr 1988
8-Month
16.60in
(421.64mm)
18.70in
(474.98mm)
-2.10in11th Driest
Driest since:
1918
119th Wettest
Wettest since:
2019
Aug 1987–Apr 1988
9-Month
19.34in
(491.24mm)
21.32in
(541.53mm)
-1.98in17th Driest
Driest since:
1918
113th Wettest
Wettest since:
2019
Jul 1987–Apr 1988
10-Month
22.17in
(563.12mm)
24.11in
(612.39mm)
-1.94in19th Driest
Driest since:
1931
111th Wettest
Wettest since:
2019
Jun 1987–Apr 1988
11-Month
24.98in
(634.49mm)
27.03in
(686.56mm)
-2.05in20th Driest
Driest since:
1931
110th Wettest
Wettest since:
2019
May 1987–Apr 1988
12-Month
28.22in
(716.79mm)
29.94in
(760.48mm)
-1.72in26th Driest
Driest since:
1918
104th Wettest
Wettest since:
2019
Nov 1986–Apr 1988
18-Month
41.78in
(1,061.21mm)
44.00in-2.22in25th Driest
Driest since:
1931
104th Wettest
Wettest since:
2020
Ties: 1937
May 1986–Apr 1988
24-Month
59.73in
(1,517.14mm)
59.89in-0.16in60th Driest
Driest since:
1955
69th Wettest
Wettest since:
2020
May 1985–Apr 1988
36-Month
90.20in
(2,291.08mm)
89.83in0.37in71st Driest
Driest since:
1955
57th Wettest
Wettest since:
2020
May 1984–Apr 1988
48-Month
120.41in
(3,058.41mm)
119.71in0.70in65th Driest
Driest since:
1956
62nd Wettest
Wettest since:
2019
May 1983–Apr 1988
60-Month
152.63in
(3,876.80mm)
149.55in3.08in79th Driest
Driest since:
1957
47th Wettest
Wettest since:
2020

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