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, September 1898

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
September 1898
1-Month
2.33"
(59.18mm)
2.49"
(63.25mm)
-0.16"
(-4.07mm)
44th Driest
Driest since:
1956
85th Wettest
Wettest since:
1986
Ties: 1904, 1930, 1992
Aug–Sep 1898
2-Month
5.39"
(136.91mm)
5.11"
(129.79mm)
0.28"
(7.12mm)
92nd Driest
Driest since:
1956
37th Wettest
Wettest to Date
1977
Jul–Sep 1898
3-Month
8.27"
(210.06mm)
7.88"
(200.15mm)
0.39"
(9.91mm)
88th Driest
Driest since:
1930
41st Wettest
Wettest to Date
1915
Ties: 1989
Jun–Sep 1898
4-Month
11.34"
(288.04mm)
10.81"
(274.57mm)
0.53"
(13.47mm)
91st Driest
Driest since:
1930
38th Wettest
Wettest to Date
1915
Ties: 1979, 1981
May–Sep 1898
5-Month
14.57"
(370.08mm)
13.72"
(348.49mm)
0.85"
(21.59mm)
94th Driest
Driest since:
1956
35th Wettest
Wettest to Date
1915
Ties: 1979
Apr–Sep 1898
6-Month
16.59"
(421.39mm)
16.24"
(412.50mm)
0.35"
(8.89mm)
74th Driest
Driest since:
1956
55th Wettest
Wettest to Date
1915
Mar–Sep 1898
7-Month
19.01"
(482.85mm)
18.75"
(476.25mm)
0.26"
(6.60mm)
69th Driest
Driest since:
1956
60th Wettest
Wettest to Date
1973
Feb–Sep 1898
8-Month
20.66"
(524.76mm)
20.88"
(530.35mm)
-0.22"
(-5.59mm)
57th Driest
Driest since:
1930
72nd Wettest
Wettest to Date
2019
Jan–Sep 1898
9-Month
23.09"
(586.49mm)
23.20"
(589.28mm)
-0.11"
(-2.79mm)
57th Driest
Driest since:
1934
72nd Wettest
Wettest to Date
2019
Dec 1897–Sep 1898
10-Month
25.65"
(651.51mm)
25.54"
(648.72mm)
0.11"
(2.79mm)
61st Driest
Driest since:
1931
67th Wettest
Wettest to Date
2019
Ties: 1922
Nov 1897–Sep 1898
11-Month
27.94"
(709.68mm)
27.77"
(705.36mm)
0.17"
(4.32mm)
65th Driest
Driest since:
1934
63rd Wettest
Wettest to Date
2019
Ties: 1948
Oct 1897–Sep 1898
12-Month
29.77"
(756.16mm)
29.94"
(760.48mm)
-0.17"
(-4.32mm)
58th Driest
Driest since:
1934
70th Wettest
Wettest to Date
2019
Apr 1897–Sep 1898
18-Month
43.99"
(1,117.35mm)
46.20"
(1,173.48mm)
-2.21"
(-56.13mm)
27th Driest
Driest since:
1931
101st Wettest
Wettest since:
2019
Oct 1896–Sep 1898
24-Month
59.51"
(1,511.55mm)
59.92"
(1,521.97mm)
-0.41"
(-10.42mm)
53rd Driest
Driest since:
1918
74th Wettest
Wettest to Date
2020
Oct 1895–Sep 1898
36-Month
88.46"
(2,246.88mm)
89.87"
(2,282.70mm)
-1.41"
(-35.82mm)
42nd Driest
Driest to Date
1956
84th Wettest
Wettest to Date
2019

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