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, July 1928

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
July 1928
1-Month
3.07"
(77.98mm)
2.78"
(70.61mm)
0.29"
(7.37mm)
105th Driest
Driest since:
1930
24th Wettest
Wettest since:
1950, 1958
Ties: 1900, 2009
Jun–Jul 1928
2-Month
7.35"
(186.69mm)
5.70"
(144.78mm)
1.65"
(41.91mm)
128th Driest
Driest since:
1930
1st Wettest
Wettest to Date
1928
May–Jul 1928
3-Month
9.69"
(246.13mm)
8.62"
(218.95mm)
1.07"
(27.18mm)
114th Driest
Driest since:
1988
15th Wettest
Wettest since:
2015
Apr–Jul 1928
4-Month
12.61"
(320.29mm)
11.13"
(282.70mm)
1.48"
(37.59mm)
117th Driest
Driest since:
1934
12th Wettest
Wettest since:
2015
Ties: 1991
Mar–Jul 1928
5-Month
15.00"
(381.00mm)
13.64"
(346.46mm)
1.36"
(34.54mm)
110th Driest
Driest since:
1936
19th Wettest
Wettest since:
1973
Feb–Jul 1928
6-Month
16.84"
(427.74mm)
15.78"
(400.81mm)
1.06"
(26.93mm)
97th Driest
Driest since:
1934
32nd Wettest
Wettest since:
2019
Jan–Jul 1928
7-Month
18.12"
(460.25mm)
18.09"
(459.49mm)
0.03"
(0.76mm)
64th Driest
Driest since:
1934
65th Wettest
Wettest since:
2019
Dec 1927–Jul 1928
8-Month
20.80"
(528.32mm)
20.43"
(518.92mm)
0.37"
(9.40mm)
67th Driest
Driest since:
1931
61st Wettest
Wettest since:
2019
Ties: 1896
Nov 1927–Jul 1928
9-Month
23.55"
(598.17mm)
22.66"
(575.56mm)
0.89"
(22.61mm)
81st Driest
Driest since:
1934
47th Wettest
Wettest since:
2019
Oct 1927–Jul 1928
10-Month
25.90"
(657.86mm)
24.83"
(630.68mm)
1.07"
(27.18mm)
87th Driest
Driest since:
1934
41st Wettest
Wettest since:
2019
Ties: 1957
Sep 1927–Jul 1928
11-Month
28.38"
(720.85mm)
27.33"
(694.18mm)
1.05"
(26.67mm)
83rd Driest
Driest since:
1934
45th Wettest
Wettest since:
2019
Aug 1927–Jul 1928
12-Month
31.10"
(789.94mm)
29.95"
(760.73mm)
1.15"
(29.21mm)
88th Driest
Driest since:
1918
40th Wettest
Wettest since:
2019
Feb 1927–Jul 1928
18-Month
48.41"
(1,229.61mm)
45.74"
(1,161.80mm)
2.67"
(67.81mm)
102nd Driest
Driest since:
1931
26th Wettest
Wettest since:
2019
Aug 1926–Jul 1928
24-Month
64.66"
(1,642.36mm)
59.92"
(1,521.97mm)
4.74"
(120.39mm)
112th Driest
Driest since:
1918
15th Wettest
Wettest to Date
2020
Aug 1925–Jul 1928
36-Month
92.87"
(2,358.90mm)
89.88"
(2,282.95mm)
2.99"
(75.95mm)
91st Driest
Driest since:
1956
35th Wettest
Wettest since:
2019
Ties: 1916
Aug 1924–Jul 1928
48-Month
118.73"
(3,015.74mm)
119.78"
(3,042.41mm)
-1.05"
(-26.67mm)
51st Driest
Driest since:
1956
74th Wettest
Wettest since:
2019
Aug 1923–Jul 1928
60-Month
147.59"
(3,748.79mm)
149.64"
(3,800.86mm)
-2.05"
(-52.07mm)
42nd Driest
Driest since:
1934
82nd Wettest
Wettest since:
2019

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