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 2009

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 2009
1-Month
4.29"
(108.97mm)
2.16"
(54.86mm)
2.13"
(54.11mm)
128th Driest
Driest since:
1952
1st Wettest
Wettest to Date
2009
Sep–Oct 2009
2-Month
6.83"
(173.48mm)
4.65"
(118.11mm)
2.18"
(55.37mm)
126th Driest
Driest since:
1952
3rd Wettest
Wettest since:
2018
Aug–Oct 2009
3-Month
9.52"
(241.81mm)
7.27"
(184.66mm)
2.25"
(57.15mm)
126th Driest
Driest since:
1952
3rd Wettest
Wettest since:
2018
Jul–Oct 2009
4-Month
12.59"
(319.79mm)
10.05"
(255.27mm)
2.54"
(64.52mm)
126th Driest
Driest since:
1952
3rd Wettest
Wettest since:
1941
Jun–Oct 2009
5-Month
15.60"
(396.24mm)
12.97"
(329.44mm)
2.63"
(66.80mm)
125th Driest
Driest since:
1952
4th Wettest
Wettest since:
1941
May–Oct 2009
6-Month
18.91"
(480.31mm)
15.88"
(403.35mm)
3.03"
(76.96mm)
124th Driest
Driest since:
1952
5th Wettest
Wettest since:
1941
Apr–Oct 2009
7-Month
21.74"
(552.20mm)
18.40"
(467.36mm)
3.34"
(84.84mm)
126th Driest
Driest since:
1952
3rd Wettest
Wettest since:
1941
Mar–Oct 2009
8-Month
24.44"
(620.78mm)
20.91"
(531.11mm)
3.53"
(89.67mm)
127th Driest
Driest since:
1956
2nd Wettest
Wettest to Date
2019
Feb–Oct 2009
9-Month
25.99"
(660.15mm)
23.04"
(585.22mm)
2.95"
(74.93mm)
121st Driest
Driest since:
1934
8th Wettest
Wettest since:
2019
Jan–Oct 2009
10-Month
27.59"
(700.79mm)
25.36"
(644.14mm)
2.23"
(56.65mm)
113th Driest
Driest since:
1934
16th Wettest
Wettest since:
2019
Dec 2008–Oct 2009
11-Month
30.43"
(772.92mm)
27.70"
(703.58mm)
2.73"
(69.34mm)
115th Driest
Driest since:
1931
13th Wettest
Wettest since:
2019
Nov 2008–Oct 2009
12-Month
32.38"
(822.45mm)
29.93"
(760.22mm)
2.45"
(62.23mm)
111th Driest
Driest since:
1934
17th Wettest
Wettest since:
2019
May 2008–Oct 2009
18-Month
49.09"
(1,246.89mm)
45.83"
(1,164.08mm)
3.26"
(82.81mm)
102nd Driest
Driest since:
1931
26th Wettest
Wettest since:
2019
Nov 2007–Oct 2009
24-Month
63.20"
(1,605.28mm)
59.90"
(1,521.46mm)
3.30"
(83.82mm)
99th Driest
Driest since:
1931
28th Wettest
Wettest since:
2019
Nov 2006–Oct 2009
36-Month
93.04"
(2,363.22mm)
89.86"
(2,282.44mm)
3.18"
(80.78mm)
91st Driest
Driest since:
1956
35th Wettest
Wettest since:
2019
Nov 2005–Oct 2009
48-Month
122.34"
(3,107.44mm)
119.78"
(3,042.41mm)
2.56"
(65.03mm)
84th Driest
Driest since:
1956
41st Wettest
Wettest since:
2019
Nov 2004–Oct 2009
60-Month
153.27"
(3,893.06mm)
149.66"
(3,801.36mm)
3.61"
(91.70mm)
87th Driest
Driest since:
1934
37th Wettest
Wettest since:
2019

Citing This Page