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 1971

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1971
1-Month
2.73"
(69.34mm)
2.16"
(54.86mm)
0.57"
(14.48mm)
103rd Driest
Driest since:
1952
26th Wettest
Wettest since:
2009
Sep–Oct 1971
2-Month
5.56"
(141.22mm)
4.65"
(118.11mm)
0.91"
(23.11mm)
109th Driest
Driest since:
1952
20th Wettest
Wettest since:
2018
Ties: 1984
Aug–Oct 1971
3-Month
8.31"
(211.07mm)
7.27"
(184.66mm)
1.04"
(26.41mm)
113th Driest
Driest since:
1952
16th Wettest
Wettest since:
2018
Ties: 1970
Jul–Oct 1971
4-Month
11.31"
(287.27mm)
10.05"
(255.27mm)
1.26"
(32.00mm)
114th Driest
Driest since:
1952
15th Wettest
Wettest since:
1941
Ties: 1919
Jun–Oct 1971
5-Month
13.84"
(351.54mm)
12.97"
(329.44mm)
0.87"
(22.10mm)
92nd Driest
Driest since:
1952
37th Wettest
Wettest since:
1941
Ties: 1898
May–Oct 1971
6-Month
16.76"
(425.70mm)
15.88"
(403.35mm)
0.88"
(22.35mm)
88th Driest
Driest since:
1952
41st Wettest
Wettest since:
1941
Apr–Oct 1971
7-Month
18.62"
(472.95mm)
18.40"
(467.36mm)
0.22"
(5.59mm)
63rd Driest
Driest since:
1952
66th Wettest
Wettest since:
1941
Mar–Oct 1971
8-Month
20.70"
(525.78mm)
20.91"
(531.11mm)
-0.21"
(-5.33mm)
50th Driest
Driest since:
1956
79th Wettest
Wettest since:
2019
Ties: 1902
Feb–Oct 1971
9-Month
23.07"
(585.98mm)
23.04"
(585.22mm)
0.03"
(0.76mm)
58th Driest
Driest since:
1934
71st Wettest
Wettest since:
2019
Jan–Oct 1971
10-Month
25.10"
(637.54mm)
25.36"
(644.14mm)
-0.26"
(-6.60mm)
51st Driest
Driest since:
1934
78th Wettest
Wettest since:
2019
Dec 1970–Oct 1971
11-Month
27.32"
(693.93mm)
27.70"
(703.58mm)
-0.38"
(-9.65mm)
46th Driest
Driest since:
1931
82nd Wettest
Wettest since:
2019
Ties: 1913
Nov 1970–Oct 1971
12-Month
29.52"
(749.81mm)
29.93"
(760.22mm)
-0.41"
(-10.41mm)
50th Driest
Driest since:
1934
78th Wettest
Wettest since:
2019
May 1970–Oct 1971
18-Month
45.62"
(1,158.75mm)
45.83"
(1,164.08mm)
-0.21"
(-5.33mm)
54th Driest
Driest since:
1931
74th Wettest
Wettest since:
2019
Nov 1969–Oct 1971
24-Month
59.33"
(1,506.98mm)
59.90"
(1,521.46mm)
-0.57"
(-14.48mm)
51st Driest
Driest since:
1931
76th Wettest
Wettest since:
2019
Ties: 1905
Nov 1968–Oct 1971
36-Month
91.07"
(2,313.18mm)
89.86"
(2,282.44mm)
1.21"
(30.74mm)
74th Driest
Driest since:
1956
52nd Wettest
Wettest since:
2019
Nov 1967–Oct 1971
48-Month
120.49"
(3,060.45mm)
119.78"
(3,042.41mm)
0.71"
(18.04mm)
63rd Driest
Driest since:
1956
62nd Wettest
Wettest since:
2019
Nov 1966–Oct 1971
60-Month
149.97"
(3,809.24mm)
149.66"
(3,801.36mm)
0.31"
(7.88mm)
62nd Driest
Driest since:
1934
62nd Wettest
Wettest since:
2019

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