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 1950

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 1950
1-Month
1.90"
(48.26mm)
2.16"
(54.86mm)
-0.26"
(-6.60mm)
37th Driest
Driest since:
1952
92nd Wettest
Wettest since:
2009
Ties: 1931, 1943
Sep–Oct 1950
2-Month
4.59"
(116.59mm)
4.65"
(118.11mm)
-0.06"
(-1.52mm)
49th Driest
Driest since:
1952
80th Wettest
Wettest since:
2018
Aug–Oct 1950
3-Month
7.14"
(181.36mm)
7.27"
(184.66mm)
-0.13"
(-3.30mm)
50th Driest
Driest since:
1952
79th Wettest
Wettest since:
2018
Jul–Oct 1950
4-Month
11.00"
(279.40mm)
10.05"
(255.27mm)
0.95"
(24.13mm)
104th Driest
Driest since:
1952
25th Wettest
Wettest since:
1941
Ties: 1979
Jun–Oct 1950
5-Month
13.80"
(350.52mm)
12.97"
(329.44mm)
0.83"
(21.08mm)
88th Driest
Driest since:
1952
41st Wettest
Wettest since:
1941
May–Oct 1950
6-Month
16.68"
(423.67mm)
15.88"
(403.35mm)
0.80"
(20.32mm)
84th Driest
Driest since:
1952
45th Wettest
Wettest since:
1941
Ties: 1977
Apr–Oct 1950
7-Month
18.76"
(476.50mm)
18.40"
(467.36mm)
0.36"
(9.14mm)
65th Driest
Driest since:
1952
64th Wettest
Wettest since:
1941
Mar–Oct 1950
8-Month
21.25"
(539.75mm)
20.91"
(531.11mm)
0.34"
(8.64mm)
67th Driest
Driest since:
1956
62nd Wettest
Wettest since:
2019
Feb–Oct 1950
9-Month
23.48"
(596.39mm)
23.04"
(585.22mm)
0.44"
(11.17mm)
72nd Driest
Driest since:
1934
57th Wettest
Wettest since:
2019
Jan–Oct 1950
10-Month
26.84"
(681.74mm)
25.36"
(644.14mm)
1.48"
(37.60mm)
99th Driest
Driest since:
1934
30th Wettest
Wettest since:
2019
Dec 1949–Oct 1950
11-Month
29.06"
(738.12mm)
27.70"
(703.58mm)
1.36"
(34.54mm)
91st Driest
Driest since:
1931
37th Wettest
Wettest since:
2019
Nov 1949–Oct 1950
12-Month
30.25"
(768.35mm)
29.93"
(760.22mm)
0.32"
(8.13mm)
65th Driest
Driest since:
1934
63rd Wettest
Wettest since:
2019
Ties: 1962
May 1949–Oct 1950
18-Month
47.02"
(1,194.31mm)
45.83"
(1,164.08mm)
1.19"
(30.23mm)
78th Driest
Driest since:
1931
50th Wettest
Wettest since:
2019
Nov 1948–Oct 1950
24-Month
63.12"
(1,603.25mm)
59.90"
(1,521.46mm)
3.22"
(81.79mm)
98th Driest
Driest since:
1931
29th Wettest
Wettest since:
2019
Nov 1947–Oct 1950
36-Month
92.60"
(2,352.04mm)
89.86"
(2,282.44mm)
2.74"
(69.60mm)
87th Driest
Driest since:
1956
39th Wettest
Wettest since:
2019
Nov 1946–Oct 1950
48-Month
122.20"
(3,103.88mm)
119.78"
(3,042.41mm)
2.42"
(61.47mm)
79th Driest
Driest since:
1956
46th Wettest
Wettest since:
2019
Nov 1945–Oct 1950
60-Month
153.21"
(3,891.53mm)
149.66"
(3,801.36mm)
3.55"
(90.17mm)
86th Driest
Driest since:
1934
38th Wettest
Wettest since:
2019

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