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, December 1998

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
December 1998
1-Month
2.08"
(52.83mm)
2.35"
(59.69mm)
-0.27"
(-6.86mm)
39th Driest
Driest since:
1930
90th Wettest
Wettest since:
2015
Nov–Dec 1998
2-Month
4.71"
(119.63mm)
4.58"
(116.33mm)
0.13"
(3.30mm)
73rd Driest
Driest since:
1976
56th Wettest
Wettest since:
2015
Ties: 1923, 2009, 2014
Oct–Dec 1998
3-Month
7.68"
(195.07mm)
6.74"
(171.20mm)
0.94"
(23.87mm)
98th Driest
Driest since:
1917
31st Wettest
Wettest since:
2015
Sep–Dec 1998
4-Month
10.19"
(258.83mm)
9.23"
(234.44mm)
0.96"
(24.39mm)
97th Driest
Driest since:
1939
32nd Wettest
Wettest since:
2018
Aug–Dec 1998
5-Month
12.61"
(320.29mm)
11.85"
(300.99mm)
0.76"
(19.30mm)
85th Driest
Driest since:
1917
44th Wettest
Wettest since:
2018
Jul–Dec 1998
6-Month
15.47"
(392.94mm)
14.62"
(371.35mm)
0.85"
(21.59mm)
87th Driest
Driest since:
1917
42nd Wettest
Wettest since:
2018
Jun–Dec 1998
7-Month
18.79"
(477.27mm)
17.55"
(445.77mm)
1.24"
(31.50mm)
98th Driest
Driest since:
1917
31st Wettest
Wettest since:
2018
Ties: 1968
May–Dec 1998
8-Month
21.41"
(543.81mm)
20.46"
(519.68mm)
0.95"
(24.13mm)
80th Driest
Driest since:
1917
49th Wettest
Wettest since:
2015
Apr–Dec 1998
9-Month
23.98"
(609.09mm)
22.98"
(583.69mm)
1.00"
(25.40mm)
82nd Driest
Driest since:
1956
47th Wettest
Wettest since:
2015
Mar–Dec 1998
10-Month
27.21"
(691.13mm)
25.49"
(647.45mm)
1.72"
(43.68mm)
100th Driest
Driest since:
1956
29th Wettest
Wettest since:
2015
Ties: 1919
Feb–Dec 1998
11-Month
30.53"
(775.46mm)
27.62"
(701.55mm)
2.91"
(73.91mm)
116th Driest
Driest since:
1910
13th Wettest
Wettest since:
2018
Jan–Dec 1998
12-Month
33.89"
(860.81mm)
29.94"
(760.48mm)
3.95"
(100.33mm)
123rd Driest
Driest since:
1910
6th Wettest
Wettest since:
1973
Jul 1997–Dec 1998
18-Month
48.94"
(1,243.08mm)
44.58"
(1,132.33mm)
4.36"
(110.75mm)
117th Driest
Driest since:
1954
11th Wettest
Wettest since:
2019
Jan 1997–Dec 1998
24-Month
65.75"
(1,670.05mm)
59.90"
(1,521.46mm)
5.85"
(148.59mm)
120th Driest
Driest since:
1931
8th Wettest
Wettest since:
2019
Jan 1996–Dec 1998
36-Month
99.45"
(2,526.03mm)
89.86"
(2,282.44mm)
9.59"
(243.59mm)
123rd Driest
Driest since:
1956
4th Wettest
Wettest since:
2019
Jan 1995–Dec 1998
48-Month
132.14"
(3,356.36mm)
119.78"
(3,042.41mm)
12.36"
(313.95mm)
122nd Driest
Driest since:
1956
4th Wettest
Wettest to Date
2019
Jan 1994–Dec 1998
60-Month
162.76"
(4,134.10mm)
149.68"
(3,801.87mm)
13.08"
(332.23mm)
121st Driest
Driest since:
1956
4th Wettest
Wettest to Date
2019

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