National Rankings

National Data Info
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.

Precipitation Rankings, April 1998

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1998
1-Month
2.57"
(65.28mm)
2.52"
(64.01mm)
0.05"
(1.27mm)
75th Driest
Driest since:
1987
54th Wettest
Wettest since:
1957
Ties: 2005
Mar–Apr 1998
2-Month
5.80"
(147.32mm)
5.03"
(127.76mm)
0.77"
(19.56mm)
110th Driest
Driest since:
1910
19th Wettest
Wettest since:
1973
Feb–Apr 1998
3-Month
9.12"
(231.65mm)
7.16"
(181.86mm)
1.96"
(49.79mm)
126th Driest
Driest since:
1910
3rd Wettest
Wettest since:
1983
Jan–Apr 1998
4-Month
12.48"
(316.99mm)
9.48"
(240.79mm)
3.00"
(76.20mm)
128th Driest
Driest since:
1910
1st Wettest
Wettest to Date
1998
Dec 1997–Apr 1998
5-Month
14.79"
(375.67mm)
11.82"
(300.23mm)
2.97"
(75.44mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest since:
1983
Ties: 1973
Nov 1997–Apr 1998
6-Month
17.08"
(433.83mm)
14.05"
(356.87mm)
3.03"
(76.96mm)
122nd Driest
Driest since:
1977
6th Wettest
Wettest since:
1983
Oct 1997–Apr 1998
7-Month
19.60"
(497.84mm)
16.22"
(411.99mm)
3.38"
(85.85mm)
123rd Driest
Driest since:
1981
5th Wettest
Wettest since:
1983
Sep 1997–Apr 1998
8-Month
22.14"
(562.36mm)
18.71"
(475.23mm)
3.43"
(87.13mm)
122nd Driest
Driest since:
1918
6th Wettest
Wettest since:
2019
Aug 1997–Apr 1998
9-Month
24.82"
(630.43mm)
21.33"
(541.78mm)
3.49"
(88.65mm)
123rd Driest
Driest since:
1918
5th Wettest
Wettest since:
2019
Jul 1997–Apr 1998
10-Month
27.53"
(699.26mm)
24.12"
(612.65mm)
3.41"
(86.61mm)
120th Driest
Driest since:
1931
8th Wettest
Wettest since:
2019
Jun 1997–Apr 1998
11-Month
30.93"
(785.62mm)
27.04"
(686.82mm)
3.89"
(98.80mm)
121st Driest
Driest since:
1931
7th Wettest
Wettest since:
2019
May 1997–Apr 1998
12-Month
33.71"
(856.23mm)
29.95"
(760.73mm)
3.76"
(95.50mm)
119th Driest
Driest since:
1918
9th Wettest
Wettest since:
2019
Nov 1996–Apr 1998
18-Month
50.63"
(1,286.00mm)
44.02"
(1,118.11mm)
6.61"
(167.89mm)
123rd Driest
Driest since:
1931
4th Wettest
Wettest since:
2020
May 1996–Apr 1998
24-Month
68.53"
(1,740.66mm)
59.92"
(1,521.97mm)
8.61"
(218.69mm)
124th Driest
Driest since:
1955
3rd Wettest
Wettest to Date
2020
May 1995–Apr 1998
36-Month
100.13"
(2,543.30mm)
89.88"
(2,282.95mm)
10.25"
(260.35mm)
123rd Driest
Driest since:
1955
3rd Wettest
Wettest since:
2020
May 1994–Apr 1998
48-Month
131.78"
(3,347.21mm)
119.77"
(3,042.16mm)
12.01"
(305.05mm)
122nd Driest
Driest since:
1956
3rd Wettest
Wettest to Date
2019
May 1993–Apr 1998
60-Month
162.82"
(4,135.63mm)
149.63"
(3,800.60mm)
13.19"
(335.03mm)
120th Driest
Driest since:
1957
4th Wettest
Wettest to Date
2020

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