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, June 1940

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
June 1940
1-Month		2.98"
(75.69mm)		2.93"
(74.42mm)		0.05"
(1.27mm)		67th Driest
Driest since:
1933
62nd Wettest
Wettest since:
1928
May–Jun 1940
2-Month		5.20"
(132.08mm)		5.84"
(148.34mm)		-0.64"
(-16.26mm)		23rd Driest
Driest since:
1988
106th Wettest
Wettest since:
2015
Ties: 2002
Apr–Jun 1940
3-Month		8.24"
(209.30mm)		8.35"
(212.09mm)		-0.11"
(-2.79mm)		57th Driest
Driest since:
1988
72nd Wettest
Wettest since:
1957
Ties: 1921
Mar–Jun 1940
4-Month		10.51"
(266.95mm)		10.86"
(275.84mm)		-0.35"
(-8.89mm)		45th Driest
Driest since:
1988
84th Wettest
Wettest since:
1957
Ties: 1994
Feb–Jun 1940
5-Month		13.49"
(342.65mm)		13.00"
(330.20mm)		0.49"
(12.45mm)		80th Driest
Driest since:
1988
49th Wettest
Wettest since:
2019
Jan–Jun 1940
6-Month		15.42"
(391.67mm)		15.31"
(388.87mm)		0.11"
(2.80mm)		65th Driest
Driest since:
1988
64th Wettest
Wettest since:
2019
Ties: 1941
Dec 1939–Jun 1940
7-Month		17.30"
(439.42mm)		17.66"
(448.56mm)		-0.36"
(-9.14mm)		46th Driest
Driest since:
1931
82nd Wettest
Wettest since:
2019
Ties: 1951
Nov 1939–Jun 1940
8-Month		18.29"
(464.57mm)		19.89"
(505.21mm)		-1.60"
(-40.64mm)		25th Driest
Driest since:
1934
103rd Wettest
Wettest since:
2019
Oct 1939–Jun 1940
9-Month		19.89"
(505.21mm)		22.05"
(560.07mm)		-2.16"
(-54.86mm)		18th Driest
Driest since:
1934
110th Wettest
Wettest since:
2019
Sep 1939–Jun 1940
10-Month		21.51"
(546.35mm)		24.55"
(623.57mm)		-3.04"
(-77.22mm)		9th Driest
Driest since:
1934
119th Wettest
Wettest since:
2019
Aug 1939–Jun 1940
11-Month		24.22"
(615.19mm)		27.17"
(690.12mm)		-2.95"
(-74.93mm)		13th Driest
Driest since:
1918
115th Wettest
Wettest since:
2019
Jul 1939–Jun 1940
12-Month		26.58"
(675.13mm)		29.96"
(760.98mm)		-3.38"
(-85.85mm)		10th Driest
Driest since:
1931
118th Wettest
Wettest since:
2019
Jan 1939–Jun 1940
18-Month		41.75"
(1,060.45mm)		45.27"
(1,149.86mm)		-3.52"
(-89.41mm)		13th Driest
Driest since:
1931
115th Wettest
Wettest since:
2019
Jul 1938–Jun 1940
24-Month		54.62"
(1,387.35mm)		59.93"
(1,522.22mm)		-5.31"
(-134.87mm)		10th Driest
Driest since:
1931
117th Wettest
Wettest since:
2020
Jul 1937–Jun 1940
36-Month		85.86"
(2,180.84mm)		89.89"
(2,283.21mm)		-4.03"
(-102.37mm)		22nd Driest
Driest since:
1956
104th Wettest
Wettest since:
2019
Jul 1936–Jun 1940
48-Month		115.52"
(2,934.21mm)		119.79"
(3,042.67mm)		-4.27"
(-108.46mm)		25th Driest
Driest since:
1956
100th Wettest
Wettest since:
2019
Ties: 1935
Jul 1935–Jun 1940
60-Month		142.28"
(3,613.91mm)		149.66"
(3,801.36mm)		-7.38"
(-187.45mm)		10th Driest
Driest since:
1934
114th Wettest
Wettest since:
2020
Ties: 1936

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