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, April 1947

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1947
1-Month
3.01"
(76.45mm)
2.52"
(64.01mm)
0.49"
(12.44mm)
110th Driest
Driest since:
1987
19th Wettest
Wettest since:
1957
Ties: 1941
Mar–Apr 1947
2-Month
5.28"
(134.11mm)
5.03"
(127.76mm)
0.25"
(6.35mm)
85th Driest
Driest since:
1910
44th Wettest
Wettest since:
1973
Feb–Apr 1947
3-Month
6.31"
(160.27mm)
7.16"
(181.86mm)
-0.85"
(-21.59mm)
16th Driest
Driest since:
1910
113th Wettest
Wettest since:
1983
Ties: 1924, 1971
Jan–Apr 1947
4-Month
8.74"
(222.00mm)
9.48"
(240.79mm)
-0.74"
(-18.79mm)
31st Driest
Driest since:
1910
98th Wettest
Wettest since:
1998
Dec 1946–Apr 1947
5-Month
10.68"
(271.27mm)
11.82"
(300.23mm)
-1.14"
(-28.96mm)
22nd Driest
Driest since:
1931
106th Wettest
Wettest since:
1983
Ties: 2022
Nov 1946–Apr 1947
6-Month
13.76"
(349.50mm)
14.05"
(356.87mm)
-0.29"
(-7.37mm)
61st Driest
Driest since:
1977
67th Wettest
Wettest since:
1983
Oct 1946–Apr 1947
7-Month
16.48"
(418.59mm)
16.22"
(411.99mm)
0.26"
(6.60mm)
78th Driest
Driest since:
1981
50th Wettest
Wettest since:
1983
Ties: 1972
Sep 1946–Apr 1947
8-Month
19.12"
(485.65mm)
18.71"
(475.23mm)
0.41"
(10.42mm)
78th Driest
Driest since:
1918
50th Wettest
Wettest since:
2019
Aug 1946–Apr 1947
9-Month
21.70"
(551.18mm)
21.33"
(541.78mm)
0.37"
(9.40mm)
79th Driest
Driest since:
1918
49th Wettest
Wettest since:
2019
Jul 1946–Apr 1947
10-Month
24.27"
(616.46mm)
24.12"
(612.65mm)
0.15"
(3.81mm)
72nd Driest
Driest since:
1931
56th Wettest
Wettest since:
2019
Ties: 1965, 1996
Jun 1946–Apr 1947
11-Month
27.15"
(689.61mm)
27.04"
(686.82mm)
0.11"
(2.79mm)
59th Driest
Driest since:
1931
69th Wettest
Wettest since:
2019
May 1946–Apr 1947
12-Month
30.90"
(784.86mm)
29.95"
(760.73mm)
0.95"
(24.13mm)
84th Driest
Driest since:
1918
44th Wettest
Wettest since:
2019
Ties: 1960
Nov 1945–Apr 1947
18-Month
44.77"
(1,137.16mm)
44.02"
(1,118.11mm)
0.75"
(19.05mm)
75th Driest
Driest since:
1931
52nd Wettest
Wettest since:
2020
May 1945–Apr 1947
24-Month
62.14"
(1,578.36mm)
59.92"
(1,521.97mm)
2.22"
(56.39mm)
91st Driest
Driest since:
1955
36th Wettest
Wettest since:
2020
May 1944–Apr 1947
36-Month
92.61"
(2,352.29mm)
89.88"
(2,282.95mm)
2.73"
(69.34mm)
87th Driest
Driest since:
1955
39th Wettest
Wettest since:
2020
Ties: 2000
May 1943–Apr 1947
48-Month
121.80"
(3,093.72mm)
119.77"
(3,042.16mm)
2.03"
(51.56mm)
78th Driest
Driest since:
1956
47th Wettest
Wettest since:
2019
May 1942–Apr 1947
60-Month
152.74"
(3,879.60mm)
149.63"
(3,800.60mm)
3.11"
(79.00mm)
80th Driest
Driest since:
1957
44th Wettest
Wettest since:
2020

Citing This Page