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, March 1999

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
March 1999
1-Month
2.19"
(55.63mm)
2.51"
(63.75mm)
-0.32"
(-8.12mm)
33rd Driest
Driest since:
1910
96th Wettest
Wettest since:
1973
Feb–Mar 1999
2-Month
4.11"
(104.39mm)
4.64"
(117.86mm)
-0.53"
(-13.47mm)
27th Driest
Driest since:
1910
102nd Wettest
Wettest since:
1998
Jan–Mar 1999
3-Month
7.24"
(183.90mm)
6.96"
(176.78mm)
0.28"
(7.12mm)
86th Driest
Driest since:
1910
43rd Wettest
Wettest since:
1998
Ties: 1912
Dec 1998–Mar 1999
4-Month
9.32"
(236.73mm)
9.30"
(236.22mm)
0.02"
(0.51mm)
67th Driest
Driest since:
1981
61st Wettest
Wettest since:
1983, 1998
Ties: 1961
Nov 1998–Mar 1999
5-Month
11.95"
(303.53mm)
11.53"
(292.86mm)
0.42"
(10.67mm)
86th Driest
Driest since:
1977
42nd Wettest
Wettest since:
1983
Ties: 1937
Oct 1998–Mar 1999
6-Month
14.92"
(378.97mm)
13.70"
(347.98mm)
1.22"
(30.99mm)
99th Driest
Driest since:
1918
29th Wettest
Wettest since:
1983
Ties: 1987
Sep 1998–Mar 1999
7-Month
17.43"
(442.72mm)
16.19"
(411.23mm)
1.24"
(31.49mm)
100th Driest
Driest since:
1918
28th Wettest
Wettest since:
2019
Ties: 1986
Aug 1998–Mar 1999
8-Month
19.85"
(504.19mm)
18.82"
(478.03mm)
1.03"
(26.16mm)
92nd Driest
Driest since:
1918
36th Wettest
Wettest since:
2019
Jul 1998–Mar 1999
9-Month
22.71"
(576.83mm)
21.60"
(548.64mm)
1.11"
(28.19mm)
91st Driest
Driest since:
1918
37th Wettest
Wettest since:
2019
Jun 1998–Mar 1999
10-Month
26.03"
(661.16mm)
24.53"
(623.06mm)
1.50"
(38.10mm)
100th Driest
Driest since:
1918
28th Wettest
Wettest since:
2019
May 1998–Mar 1999
11-Month
28.65"
(727.71mm)
27.43"
(696.72mm)
1.22"
(30.99mm)
88th Driest
Driest since:
1918
40th Wettest
Wettest since:
2019
Apr 1998–Mar 1999
12-Month
31.22"
(792.99mm)
29.96"
(760.98mm)
1.26"
(32.01mm)
91st Driest
Driest since:
1918
37th Wettest
Wettest since:
2016
Oct 1997–Mar 1999
18-Month
48.25"
(1,225.55mm)
43.68"
(1,109.47mm)
4.57"
(116.08mm)
117th Driest
Driest since:
1918
10th Wettest
Wettest since:
2020
Apr 1997–Mar 1999
24-Month
65.35"
(1,659.89mm)
59.92"
(1,521.97mm)
5.43"
(137.92mm)
116th Driest
Driest since:
1955
11th Wettest
Wettest since:
2020
Apr 1996–Mar 1999
36-Month
99.74"
(2,533.40mm)
89.87"
(2,282.70mm)
9.87"
(250.70mm)
122nd Driest
Driest since:
1955
4th Wettest
Wettest since:
2020
Apr 1995–Mar 1999
48-Month
131.61"
(3,342.89mm)
119.76"
(3,041.90mm)
11.85"
(300.99mm)
121st Driest
Driest since:
1957
4th Wettest
Wettest since:
2019
Apr 1994–Mar 1999
60-Month
163.25"
(4,146.55mm)
149.62"
(3,800.35mm)
13.63"
(346.20mm)
120th Driest
Driest since:
1957
4th Wettest
Wettest to Date
2020

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