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, September 1934

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  • Record Wettest
PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
September 1934
1-Month
2.87"
(72.90mm)
2.49"
(63.25mm)
0.38"
(9.65mm)
108th Driest
Driest since:
1956
21st Wettest
Wettest since:
1986
Aug–Sep 1934
2-Month
5.13"
(130.30mm)
5.11"
(129.79mm)
0.02"
(0.51mm)
66th Driest
Driest since:
1956
63rd Wettest
Wettest since:
1977
Ties: 1924, 1991
Jul–Sep 1934
3-Month
7.20"
(182.88mm)
7.88"
(200.15mm)
-0.68"
(-17.27mm)
22nd Driest
Driest since:
1930
107th Wettest
Wettest since:
1915
Jun–Sep 1934
4-Month
9.79"
(248.67mm)
10.81"
(274.57mm)
-1.02"
(-25.90mm)
20th Driest
Driest since:
1930
109th Wettest
Wettest since:
1915
May–Sep 1934
5-Month
11.60"
(294.64mm)
13.72"
(348.49mm)
-2.12"
(-53.85mm)
4th Driest
Driest since:
1956
125th Wettest
Wettest since:
1915
Apr–Sep 1934
6-Month
13.37"
(339.60mm)
16.24"
(412.50mm)
-2.87"
(-72.90mm)
2nd Driest
Driest to Date
1956
127th Wettest
Wettest since:
1915
Mar–Sep 1934
7-Month
15.71"
(399.03mm)
18.75"
(476.25mm)
-3.04"
(-77.22mm)
4th Driest
Driest since:
1956
125th Wettest
Wettest since:
1973
Feb–Sep 1934
8-Month
17.36"
(440.94mm)
20.88"
(530.35mm)
-3.52"
(-89.41mm)
3rd Driest
Driest since:
1930
126th Wettest
Wettest since:
2019
Jan–Sep 1934
9-Month
19.18"
(487.17mm)
23.20"
(589.28mm)
-4.02"
(-102.11mm)
1st Driest
Driest to Date
1934
128th Wettest
Wettest since:
2019
Dec 1933–Sep 1934
10-Month
21.84"
(554.74mm)
25.54"
(648.72mm)
-3.70"
(-93.98mm)
2nd Driest
Driest since:
1931
126th Wettest
Wettest since:
2019
Nov 1933–Sep 1934
11-Month
22.89"
(581.41mm)
27.77"
(705.36mm)
-4.88"
(-123.95mm)
1st Driest
Driest to Date
1934
127th Wettest
Wettest since:
2019
Oct 1933–Sep 1934
12-Month
24.55"
(623.57mm)
29.94"
(760.48mm)
-5.39"
(-136.91mm)
1st Driest
Driest to Date
1934
127th Wettest
Wettest since:
2019
Apr 1933–Sep 1934
18-Month
40.02"
(1,016.51mm)
46.20"
(1,173.48mm)
-6.18"
(-156.97mm)
3rd Driest
Driest since:
1931
125th Wettest
Wettest since:
2019
Oct 1932–Sep 1934
24-Month
54.10"
(1,374.14mm)
59.92"
(1,521.97mm)
-5.82"
(-147.83mm)
8th Driest
Driest since:
1918
119th Wettest
Wettest since:
2020
Oct 1931–Sep 1934
36-Month
84.94"
(2,157.48mm)
89.87"
(2,282.70mm)
-4.93"
(-125.22mm)
16th Driest
Driest since:
1956
110th Wettest
Wettest since:
2019
Oct 1930–Sep 1934
48-Month
110.51"
(2,806.95mm)
119.78"
(3,042.41mm)
-9.27"
(-235.46mm)
3rd Driest
Driest to Date
1956
122nd Wettest
Wettest since:
2019
Oct 1929–Sep 1934
60-Month
136.99"
(3,479.55mm)
149.66"
(3,801.36mm)
-12.67"
(-321.81mm)
2nd Driest
Driest to Date
1956
122nd Wettest
Wettest since:
2020

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