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 1956

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 1956
1-Month
2.00"
(50.80mm)
2.16"
(54.86mm)
-0.16"
(-4.06mm)
42nd Driest
Driest since:
1952
87th Wettest
Wettest since:
2009
Ties: 1945
Sep–Oct 1956
2-Month
3.44"
(87.38mm)
4.65"
(118.11mm)
-1.21"
(-30.73mm)
10th Driest
Driest since:
1952
119th Wettest
Wettest since:
2018
Aug–Oct 1956
3-Month
5.65"
(143.51mm)
7.27"
(184.66mm)
-1.62"
(-41.15mm)
7th Driest
Driest since:
1952
122nd Wettest
Wettest since:
2018
Jul–Oct 1956
4-Month
8.43"
(214.12mm)
10.05"
(255.27mm)
-1.62"
(-41.15mm)
8th Driest
Driest since:
1952
121st Wettest
Wettest since:
1941
Jun–Oct 1956
5-Month
10.64"
(270.26mm)
12.97"
(329.44mm)
-2.33"
(-59.18mm)
3rd Driest
Driest since:
1952
126th Wettest
Wettest since:
1941
May–Oct 1956
6-Month
13.24"
(336.30mm)
15.88"
(403.35mm)
-2.64"
(-67.05mm)
3rd Driest
Driest since:
1952
126th Wettest
Wettest since:
1941
Apr–Oct 1956
7-Month
15.31"
(388.87mm)
18.40"
(467.36mm)
-3.09"
(-78.49mm)
3rd Driest
Driest since:
1952
126th Wettest
Wettest since:
1941
Mar–Oct 1956
8-Month
17.13"
(435.10mm)
20.91"
(531.11mm)
-3.78"
(-96.01mm)
1st Driest
Driest since:
1956
128th Wettest
Wettest since:
2019
Feb–Oct 1956
9-Month
19.75"
(501.65mm)
23.04"
(585.22mm)
-3.29"
(-83.57mm)
7th Driest
Driest since:
1934
122nd Wettest
Wettest since:
2019
Jan–Oct 1956
10-Month
22.02"
(559.31mm)
25.36"
(644.14mm)
-3.34"
(-84.83mm)
7th Driest
Driest since:
1934
122nd Wettest
Wettest since:
2019
Ties: 1930
Dec 1955–Oct 1956
11-Month
24.26"
(616.20mm)
27.70"
(703.58mm)
-3.44"
(-87.38mm)
7th Driest
Driest since:
1931
121st Wettest
Wettest since:
2019
Nov 1955–Oct 1956
12-Month
26.18"
(664.97mm)
29.93"
(760.22mm)
-3.75"
(-95.25mm)
4th Driest
Driest since:
1934
124th Wettest
Wettest since:
2019
May 1955–Oct 1956
18-Month
41.38"
(1,051.05mm)
45.83"
(1,164.08mm)
-4.45"
(-113.03mm)
10th Driest
Driest since:
1931
118th Wettest
Wettest since:
2019
Nov 1954–Oct 1956
24-Month
53.30"
(1,353.82mm)
59.90"
(1,521.46mm)
-6.60"
(-167.64mm)
3rd Driest
Driest since:
1931
124th Wettest
Wettest since:
2019
Nov 1953–Oct 1956
36-Month
80.20"
(2,037.08mm)
89.86"
(2,282.44mm)
-9.66"
(-245.36mm)
1st Driest
Driest since:
1956
125th Wettest
Wettest since:
2019
Nov 1952–Oct 1956
48-Month
108.82"
(2,764.03mm)
119.78"
(3,042.41mm)
-10.96"
(-278.38mm)
1st Driest
Driest since:
1956
124th Wettest
Wettest since:
2019
Nov 1951–Oct 1956
60-Month
136.11"
(3,457.19mm)
149.66"
(3,801.36mm)
-13.55"
(-344.17mm)
2nd Driest
Driest since:
1934
122nd Wettest
Wettest since:
2019

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