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 1981

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 1981
1-Month
3.10"
(78.74mm)
2.16"
(54.86mm)
0.94"
(23.88mm)
119th Driest
Driest since:
1952
10th Wettest
Wettest since:
2009
Sep–Oct 1981
2-Month
5.18"
(131.57mm)
4.65"
(118.11mm)
0.53"
(13.46mm)
96th Driest
Driest since:
1952
33rd Wettest
Wettest since:
2018
Aug–Oct 1981
3-Month
7.94"
(201.68mm)
7.27"
(184.66mm)
0.67"
(17.02mm)
97th Driest
Driest since:
1952
32nd Wettest
Wettest since:
2018
Ties: 1946
Jul–Oct 1981
4-Month
11.03"
(280.16mm)
10.05"
(255.27mm)
0.98"
(24.89mm)
105th Driest
Driest since:
1952
24th Wettest
Wettest since:
1941
Jun–Oct 1981
5-Month
14.44"
(366.78mm)
12.97"
(329.44mm)
1.47"
(37.34mm)
111th Driest
Driest since:
1952
18th Wettest
Wettest since:
1941
May–Oct 1981
6-Month
17.99"
(456.95mm)
15.88"
(403.35mm)
2.11"
(53.60mm)
120th Driest
Driest since:
1952
9th Wettest
Wettest since:
1941
Apr–Oct 1981
7-Month
20.18"
(512.57mm)
18.40"
(467.36mm)
1.78"
(45.21mm)
110th Driest
Driest since:
1952
19th Wettest
Wettest since:
1941
Mar–Oct 1981
8-Month
22.39"
(568.71mm)
20.91"
(531.11mm)
1.48"
(37.60mm)
96th Driest
Driest since:
1956
33rd Wettest
Wettest since:
2019
Feb–Oct 1981
9-Month
24.56"
(623.82mm)
23.04"
(585.22mm)
1.52"
(38.60mm)
96th Driest
Driest since:
1934
33rd Wettest
Wettest since:
2019
Jan–Oct 1981
10-Month
25.54"
(648.72mm)
25.36"
(644.14mm)
0.18"
(4.58mm)
62nd Driest
Driest since:
1934
67th Wettest
Wettest since:
2019
Dec 1980–Oct 1981
11-Month
27.11"
(688.59mm)
27.70"
(703.58mm)
-0.59"
(-14.99mm)
43rd Driest
Driest since:
1931
85th Wettest
Wettest since:
2019
Ties: 1914
Nov 1980–Oct 1981
12-Month
28.87"
(733.30mm)
29.93"
(760.22mm)
-1.06"
(-26.92mm)
37th Driest
Driest since:
1934
91st Wettest
Wettest since:
2019
May 1980–Oct 1981
18-Month
43.47"
(1,104.14mm)
45.83"
(1,164.08mm)
-2.36"
(-59.94mm)
23rd Driest
Driest since:
1931
105th Wettest
Wettest since:
2019
Ties: 2001, 2012
Nov 1979–Oct 1981
24-Month
58.01"
(1,473.45mm)
59.90"
(1,521.46mm)
-1.89"
(-48.01mm)
34th Driest
Driest since:
1931
93rd Wettest
Wettest since:
2019
Nov 1978–Oct 1981
36-Month
91.69"
(2,328.93mm)
89.86"
(2,282.44mm)
1.83"
(46.49mm)
79th Driest
Driest since:
1956
47th Wettest
Wettest since:
2019
Nov 1977–Oct 1981
48-Month
122.28"
(3,105.91mm)
119.78"
(3,042.41mm)
2.50"
(63.50mm)
81st Driest
Driest since:
1956
44th Wettest
Wettest since:
2019
Nov 1976–Oct 1981
60-Month
149.61"
(3,800.09mm)
149.66"
(3,801.36mm)
-0.05"
(-1.27mm)
59th Driest
Driest since:
1934
65th Wettest
Wettest since:
2019

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