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 1918

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
October 1918
1-Month
2.92"
(74.17mm)
2.16"
(54.86mm)
0.76"
(19.31mm)
114th Driest
Driest since:
1952
15th Wettest
Wettest to Date
2009
Sep–Oct 1918
2-Month
5.36"
(136.14mm)
4.65"
(118.11mm)
0.71"
(18.03mm)
102nd Driest
Driest since:
1952
27th Wettest
Wettest since:
2018
Ties: 1923, 1946
Aug–Oct 1918
3-Month
7.83"
(198.88mm)
7.27"
(184.66mm)
0.56"
(14.22mm)
89th Driest
Driest since:
1952
40th Wettest
Wettest since:
2018
Jul–Oct 1918
4-Month
10.16"
(258.06mm)
10.05"
(255.27mm)
0.11"
(2.79mm)
63rd Driest
Driest since:
1952
66th Wettest
Wettest since:
1941
Ties: 1989
Jun–Oct 1918
5-Month
12.41"
(315.21mm)
12.97"
(329.44mm)
-0.56"
(-14.23mm)
42nd Driest
Driest since:
1952
87th Wettest
Wettest since:
1941
May–Oct 1918
6-Month
15.00"
(381.00mm)
15.88"
(403.35mm)
-0.88"
(-22.35mm)
31st Driest
Driest since:
1952
98th Wettest
Wettest since:
1941
Apr–Oct 1918
7-Month
17.82"
(452.63mm)
18.40"
(467.36mm)
-0.58"
(-14.73mm)
43rd Driest
Driest since:
1952
86th Wettest
Wettest since:
1941
Mar–Oct 1918
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: 1897, 1955
Feb–Oct 1918
9-Month
21.39"
(543.31mm)
23.04"
(585.22mm)
-1.65"
(-41.91mm)
19th Driest
Driest since:
1934
110th Wettest
Wettest since:
2019
Jan–Oct 1918
10-Month
23.80"
(604.52mm)
25.36"
(644.14mm)
-1.56"
(-39.62mm)
25th Driest
Driest since:
1934
104th Wettest
Wettest since:
2019
Dec 1917–Oct 1918
11-Month
25.46"
(646.68mm)
27.70"
(703.58mm)
-2.24"
(-56.90mm)
16th Driest
Driest since:
1931
112th Wettest
Wettest since:
2019
Nov 1917–Oct 1918
12-Month
26.41"
(670.81mm)
29.93"
(760.22mm)
-3.52"
(-89.41mm)
6th Driest
Driest since:
1934
122nd Wettest
Wettest since:
2019
May 1917–Oct 1918
18-Month
39.99"
(1,015.75mm)
45.83"
(1,164.08mm)
-5.84"
(-148.33mm)
3rd Driest
Driest since:
1931
125th Wettest
Wettest since:
2019
Nov 1916–Oct 1918
24-Month
52.84"
(1,342.14mm)
59.90"
(1,521.46mm)
-7.06"
(-179.32mm)
2nd Driest
Driest since:
1931
125th Wettest
Wettest since:
2019
Nov 1915–Oct 1918
36-Month
83.30"
(2,115.82mm)
89.86"
(2,282.44mm)
-6.56"
(-166.62mm)
7th Driest
Driest since:
1956
119th Wettest
Wettest since:
2019
Nov 1914–Oct 1918
48-Month
115.35"
(2,929.89mm)
119.78"
(3,042.41mm)
-4.43"
(-112.52mm)
21st Driest
Driest since:
1956
104th Wettest
Wettest since:
2019
Nov 1913–Oct 1918
60-Month
144.77"
(3,677.16mm)
149.66"
(3,801.36mm)
-4.89"
(-124.20mm)
20th Driest
Driest since:
1934
104th Wettest
Wettest since:
2019

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