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, October 1898

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1898
1-Month
2.50"
(63.50mm)
2.16"
(54.86mm)
0.34"
(8.64mm)
90th Driest
Driest since:
1952
39th Wettest
Wettest to Date
2009
Sep–Oct 1898
2-Month
4.83"
(122.68mm)
4.65"
(118.11mm)
0.18"
(4.57mm)
76th Driest
Driest since:
1952
53rd Wettest
Wettest since:
2018
Ties: 1927, 1967, 1995
Aug–Oct 1898
3-Month
7.89"
(200.41mm)
7.27"
(184.66mm)
0.62"
(15.75mm)
92nd Driest
Driest since:
1952
37th Wettest
Wettest to Date
2018
Ties: 1973
Jul–Oct 1898
4-Month
10.77"
(273.56mm)
10.05"
(255.27mm)
0.72"
(18.29mm)
95th Driest
Driest since:
1952
34th Wettest
Wettest to Date
1941
Jun–Oct 1898
5-Month
13.84"
(351.54mm)
12.97"
(329.44mm)
0.87"
(22.10mm)
92nd Driest
Driest since:
1952
37th Wettest
Wettest to Date
1941
Ties: 1971
May–Oct 1898
6-Month
17.07"
(433.58mm)
15.88"
(403.35mm)
1.19"
(30.23mm)
98th Driest
Driest since:
1952
31st Wettest
Wettest to Date
1941
Apr–Oct 1898
7-Month
19.09"
(484.89mm)
18.40"
(467.36mm)
0.69"
(17.53mm)
82nd Driest
Driest since:
1952
47th Wettest
Wettest to Date
1941
Mar–Oct 1898
8-Month
21.51"
(546.35mm)
20.91"
(531.11mm)
0.60"
(15.24mm)
76th Driest
Driest since:
1956
53rd Wettest
Wettest to Date
2019
Feb–Oct 1898
9-Month
23.16"
(588.26mm)
23.04"
(585.22mm)
0.12"
(3.04mm)
62nd Driest
Driest since:
1934
67th Wettest
Wettest to Date
2019
Jan–Oct 1898
10-Month
25.59"
(649.99mm)
25.36"
(644.14mm)
0.23"
(5.85mm)
65th Driest
Driest since:
1934
64th Wettest
Wettest to Date
2019
Dec 1897–Oct 1898
11-Month
28.15"
(715.01mm)
27.70"
(703.58mm)
0.45"
(11.43mm)
71st Driest
Driest since:
1931
57th Wettest
Wettest to Date
2019
Nov 1897–Oct 1898
12-Month
30.44"
(773.18mm)
29.93"
(760.22mm)
0.51"
(12.96mm)
68th Driest
Driest since:
1934
60th Wettest
Wettest to Date
2019
May 1897–Oct 1898
18-Month
44.07"
(1,119.38mm)
45.83"
(1,164.08mm)
-1.76"
(-44.70mm)
33rd Driest
Driest since:
1931
95th Wettest
Wettest since:
2019
Nov 1896–Oct 1898
24-Month
59.86"
(1,520.44mm)
59.90"
(1,521.46mm)
-0.04"
(-1.02mm)
57th Driest
Driest since:
1931
70th Wettest
Wettest to Date
2019
Nov 1895–Oct 1898
36-Month
89.88"
(2,282.95mm)
89.86"
(2,282.44mm)
0.02"
(0.51mm)
60th Driest
Driest to Date
1956
66th Wettest
Wettest to Date
2019

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