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 1897

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
October 1897
1-Month
1.83"
(46.48mm)
2.16"
(54.86mm)
-0.33"
(-8.38mm)
32nd Driest
Driest since:
1952
97th Wettest
Wettest since:
2009
Ties: 2003
Sep–Oct 1897
2-Month
3.40"
(86.36mm)
4.65"
(118.11mm)
-1.25"
(-31.75mm)
9th Driest
Driest since:
1952
120th Wettest
Wettest since:
2018
Aug–Oct 1897
3-Month
5.70"
(144.78mm)
7.27"
(184.66mm)
-1.57"
(-39.88mm)
8th Driest
Driest since:
1952
121st Wettest
Wettest since:
2018
Jul–Oct 1897
4-Month
8.63"
(219.20mm)
10.05"
(255.27mm)
-1.42"
(-36.07mm)
11th Driest
Driest since:
1952
118th Wettest
Wettest since:
1941
Jun–Oct 1897
5-Month
11.51"
(292.35mm)
12.97"
(329.44mm)
-1.46"
(-37.09mm)
14th Driest
Driest since:
1952
115th Wettest
Wettest since:
1941
Ties: 1980
May–Oct 1897
6-Month
13.63"
(346.20mm)
15.88"
(403.35mm)
-2.25"
(-57.15mm)
7th Driest
Driest to Date
1952
122nd Wettest
Wettest since:
1941
Apr–Oct 1897
7-Month
16.05"
(407.67mm)
18.40"
(467.36mm)
-2.35"
(-59.69mm)
11th Driest
Driest since:
1952
118th Wettest
Wettest since:
1941
Mar–Oct 1897
8-Month
19.67"
(499.62mm)
20.91"
(531.11mm)
-1.24"
(-31.49mm)
24th Driest
Driest since:
1956
105th Wettest
Wettest since:
2019
Ties: 1918, 1955
Feb–Oct 1897
9-Month
22.46"
(570.48mm)
23.04"
(585.22mm)
-0.58"
(-14.74mm)
44th Driest
Driest since:
1934
85th Wettest
Wettest since:
2019
Jan–Oct 1897
10-Month
24.85"
(631.19mm)
25.36"
(644.14mm)
-0.51"
(-12.95mm)
44th Driest
Driest since:
1934
85th Wettest
Wettest since:
2019
Dec 1896–Oct 1897
11-Month
26.35"
(669.29mm)
27.70"
(703.58mm)
-1.35"
(-34.29mm)
30th Driest
Driest to Date
1931
98th Wettest
Wettest since:
2019
Nov 1896–Oct 1897
12-Month
29.42"
(747.27mm)
29.93"
(760.22mm)
-0.51"
(-12.95mm)
45th Driest
Driest to Date
1934
83rd Wettest
Wettest since:
2019
Ties: 1914, 1968
May 1896–Oct 1897
18-Month
45.17"
(1,147.32mm)
45.83"
(1,164.08mm)
-0.66"
(-16.76mm)
45th Driest
Driest since:
1931
83rd Wettest
Wettest to Date
2019
Nov 1895–Oct 1897
24-Month
59.44"
(1,509.78mm)
59.90"
(1,521.46mm)
-0.46"
(-11.68mm)
54th Driest
Driest to Date
1931
73rd Wettest
Wettest to Date
2019

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