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, November 2018

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
November 2018
1-Month 		2.71"
(68.83mm)		 2.23"
(56.64mm)		 0.48"
(12.19mm)		 100th Driest
Driest since:
 1917
29th Wettest
Wettest since:
 1983
Oct–Nov 2018
2-Month 		6.14"
(155.96mm)		 4.40"
(111.76mm)		 1.74"
(44.20mm)		 122nd Driest
Driest since:
 1917
7th Wettest
Wettest since:
 1985
Sep–Nov 2018
3-Month 		9.71"
(246.63mm)		 6.88"
(174.75mm)		 2.83"
(71.88mm)		 127th Driest
Driest since:
 1939
2nd Wettest
Wettest since:
 1985
Aug–Nov 2018
4-Month 		12.69"
(322.33mm)		 9.50"
(241.30mm)		 3.19"
(81.03mm)		 128th Driest
Driest since:
 1952
1st Wettest
Wettest to Date
 2018
Jul–Nov 2018
5-Month 		15.55"
(394.97mm)		 12.28"
(311.91mm)		 3.27"
(83.06mm)		 128th Driest
Driest since:
 1952
1st Wettest
Wettest to Date
 2018
Jun–Nov 2018
6-Month 		18.70"
(474.98mm)		 15.20"
(386.08mm)		 3.50"
(88.90mm)		 127th Driest
Driest since:
 1952
2nd Wettest
Wettest since:
 2004
May–Nov 2018
7-Month 		21.72"
(551.69mm)		 18.12"
(460.25mm)		 3.60"
(91.44mm)		 126th Driest
Driest since:
 1952
3rd Wettest
Wettest since:
 2004
Apr–Nov 2018
8-Month 		24.18"
(614.17mm)		 20.63"
(524.00mm)		 3.55"
(90.17mm)		 125th Driest
Driest since:
 1952
4th Wettest
Wettest since:
 2015
Mar–Nov 2018
9-Month 		26.66"
(677.16mm)		 23.14"
(587.76mm)		 3.52"
(89.40mm)		 125th Driest
Driest since:
 1956
4th Wettest
Wettest since:
 1973
Feb–Nov 2018
10-Month 		29.55"
(750.57mm)		 25.28"
(642.11mm)		 4.27"
(108.46mm)		 127th Driest
Driest since:
 1910
2nd Wettest
Wettest to Date
 2019
Jan–Nov 2018
11-Month 		31.40"
(797.56mm)		 27.59"
(700.79mm)		 3.81"
(96.77mm)		 124th Driest
Driest since:
 1910
5th Wettest
Wettest since:
 2019
Dec 2017–Nov 2018
12-Month 		32.99"
(837.95mm)		 29.94"
(760.48mm)		 3.05"
(77.47mm)		 116th Driest
Driest since:
 1931
12th Wettest
Wettest since:
 2019
Jun 2017–Nov 2018
18-Month 		48.77"
(1,238.76mm)		 45.16"
(1,147.06mm)		 3.61"
(91.70mm)		 111th Driest
Driest since:
 1931
17th Wettest
Wettest since:
 2019
Ties: 2005
Dec 2016–Nov 2018
24-Month 		66.43"
(1,687.32mm)		 59.90"
(1,521.46mm)		 6.53"
(165.86mm)		 121st Driest
Driest since:
 1931
6th Wettest
Wettest since:
 2019
Dec 2015–Nov 2018
36-Month 		99.19"
(2,519.43mm)		 89.86"
(2,282.44mm)		 9.33"
(236.99mm)		 119th Driest
Driest since:
 1956
7th Wettest
Wettest since:
 2019
Dec 2014–Nov 2018
48-Month 		132.30"
(3,360.42mm)		 119.78"
(3,042.41mm)		 12.52"
(318.01mm)		 122nd Driest
Driest since:
 1956
3rd Wettest
Wettest to Date
 2019
Dec 2013–Nov 2018
60-Month 		162.78"
(4,134.61mm)		 149.66"
(3,801.36mm)		 13.12"
(333.25mm)		 120th Driest
Driest since:
 1956
4th Wettest
Wettest to Date
 2019

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