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, August 1927

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
August 1927
1-Month		2.72"
(69.09mm)		2.62"
(66.55mm)		0.10"
(2.54mm)		78th Driest
Driest since:
1929
51st Wettest
Wettest since:
1977
Ties: 1931
Jul–Aug 1927
2-Month		5.56"
(141.22mm)		5.40"
(137.16mm)		0.16"
(4.06mm)		73rd Driest
Driest since:
1930
56th Wettest
Wettest since:
1915
Jun–Aug 1927
3-Month		8.68"
(220.47mm)		8.32"
(211.33mm)		0.36"
(9.14mm)		84th Driest
Driest since:
1930
45th Wettest
Wettest since:
1928
May–Aug 1927
4-Month		11.67"
(296.42mm)		11.23"
(285.24mm)		0.44"
(11.18mm)		78th Driest
Driest since:
1936
51st Wettest
Wettest since:
1915
Apr–Aug 1927
5-Month		14.72"
(373.89mm)		13.75"
(349.25mm)		0.97"
(24.64mm)		98th Driest
Driest since:
1934
31st Wettest
Wettest since:
2019
Mar–Aug 1927
6-Month		17.31"
(439.67mm)		16.26"
(413.00mm)		1.05"
(26.67mm)		96th Driest
Driest since:
1936
33rd Wettest
Wettest since:
1905
Ties: 1923
Feb–Aug 1927
7-Month		20.03"
(508.76mm)		18.40"
(467.36mm)		1.63"
(41.40mm)		108th Driest
Driest since:
1934
21st Wettest
Wettest since:
2019
Jan–Aug 1927
8-Month		21.80"
(553.72mm)		20.71"
(526.03mm)		1.09"
(27.69mm)		96th Driest
Driest since:
1934
33rd Wettest
Wettest since:
2019
Dec 1926–Aug 1927
9-Month		24.47"
(621.54mm)		23.05"
(585.47mm)		1.42"
(36.07mm)		100th Driest
Driest since:
1931
28th Wettest
Wettest since:
2019
Ties: 1950
Nov 1926–Aug 1927
10-Month		27.34"
(694.44mm)		25.28"
(642.11mm)		2.06"
(52.33mm)		108th Driest
Driest since:
1934
20th Wettest
Wettest since:
2019
Oct 1926–Aug 1927
11-Month		29.83"
(757.68mm)		27.45"
(697.23mm)		2.38"
(60.45mm)		108th Driest
Driest since:
1934
20th Wettest
Wettest since:
2019
Sep 1926–Aug 1927
12-Month		33.06"
(839.72mm)		29.94"
(760.48mm)		3.12"
(79.24mm)		115th Driest
Driest since:
1934
13th Wettest
Wettest to Date
2019
Mar 1926–Aug 1927
18-Month		48.33"
(1,227.58mm)		46.22"
(1,173.99mm)		2.11"
(53.59mm)		91st Driest
Driest since:
1931
37th Wettest
Wettest since:
2019
Sep 1925–Aug 1927
24-Month		62.43"
(1,585.72mm)		59.92"
(1,521.97mm)		2.51"
(63.75mm)		92nd Driest
Driest since:
1918
35th Wettest
Wettest since:
2020
Sep 1924–Aug 1927
36-Month		88.14"
(2,238.76mm)		89.86"
(2,282.44mm)		-1.72"
(-43.68mm)		42nd Driest
Driest since:
1956
84th Wettest
Wettest since:
2019
Sep 1923–Aug 1927
48-Month		116.29"
(2,953.77mm)		119.77"
(3,042.16mm)		-3.48"
(-88.39mm)		28th Driest
Driest since:
1956
97th Wettest
Wettest since:
2019
Sep 1922–Aug 1927
60-Month		145.85"
(3,704.59mm)		149.64"
(3,800.86mm)		-3.79"
(-96.27mm)		28th Driest
Driest since:
1934
96th Wettest
Wettest since:
2019

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