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 1909

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1909
1-Month
1.54"
(39.12mm)
2.16"
(54.86mm)
-0.62"
(-15.74mm)
17th Driest
Driest since:
1952
112th Wettest
Wettest since:
2009
Ties: 1948
Sep–Oct 1909
2-Month
3.82"
(97.03mm)
4.65"
(118.11mm)
-0.83"
(-21.08mm)
18th Driest
Driest since:
1952
111th Wettest
Wettest since:
2018
Aug–Oct 1909
3-Month
6.23"
(158.24mm)
7.27"
(184.66mm)
-1.04"
(-26.42mm)
15th Driest
Driest since:
1952
114th Wettest
Wettest since:
2018
Jul–Oct 1909
4-Month
9.26"
(235.20mm)
10.05"
(255.27mm)
-0.79"
(-20.07mm)
28th Driest
Driest since:
1952
101st Wettest
Wettest since:
1941
Jun–Oct 1909
5-Month
12.49"
(317.25mm)
12.97"
(329.44mm)
-0.48"
(-12.19mm)
43rd Driest
Driest since:
1952
86th Wettest
Wettest since:
1941
May–Oct 1909
6-Month
15.53"
(394.46mm)
15.88"
(403.35mm)
-0.35"
(-8.89mm)
45th Driest
Driest since:
1952
84th Wettest
Wettest since:
1941
Apr–Oct 1909
7-Month
17.81"
(452.37mm)
18.40"
(467.36mm)
-0.59"
(-14.99mm)
42nd Driest
Driest since:
1952
87th Wettest
Wettest since:
1941
Mar–Oct 1909
8-Month
20.02"
(508.51mm)
20.91"
(531.11mm)
-0.89"
(-22.60mm)
31st Driest
Driest since:
1956
98th Wettest
Wettest since:
2019
Ties: 1932
Feb–Oct 1909
9-Month
22.90"
(581.66mm)
23.04"
(585.22mm)
-0.14"
(-3.56mm)
55th Driest
Driest since:
1934
74th Wettest
Wettest since:
2019
Jan–Oct 1909
10-Month
25.64"
(651.26mm)
25.36"
(644.14mm)
0.28"
(7.12mm)
69th Driest
Driest since:
1934
60th Wettest
Wettest since:
2019
Ties: 1965
Dec 1908–Oct 1909
11-Month
27.37"
(695.20mm)
27.70"
(703.58mm)
-0.33"
(-8.38mm)
48th Driest
Driest since:
1931
80th Wettest
Wettest since:
2019
Nov 1908–Oct 1909
12-Month
29.04"
(737.62mm)
29.93"
(760.22mm)
-0.89"
(-22.60mm)
39th Driest
Driest since:
1934
89th Wettest
Wettest since:
2019
May 1908–Oct 1909
18-Month
45.94"
(1,166.88mm)
45.83"
(1,164.08mm)
0.11"
(2.80mm)
61st Driest
Driest since:
1931
67th Wettest
Wettest since:
2019
Nov 1907–Oct 1909
24-Month
60.38"
(1,533.65mm)
59.90"
(1,521.46mm)
0.48"
(12.19mm)
67th Driest
Driest since:
1931
60th Wettest
Wettest since:
2019
Ties: 1972
Nov 1906–Oct 1909
36-Month
91.75"
(2,330.45mm)
89.86"
(2,282.44mm)
1.89"
(48.01mm)
80th Driest
Driest since:
1956
46th Wettest
Wettest since:
2019
Nov 1905–Oct 1909
48-Month
123.71"
(3,142.23mm)
119.78"
(3,042.41mm)
3.93"
(99.82mm)
98th Driest
Driest since:
1956
27th Wettest
Wettest since:
2019
Nov 1904–Oct 1909
60-Month
155.00"
(3,937.00mm)
149.66"
(3,801.36mm)
5.34"
(135.64mm)
96th Driest
Driest since:
1934
28th Wettest
Wettest to Date
2019

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