Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

West Climate Region

Precipitation Rankings, April 1920

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2023)
Wettest/Driest
Since
Record
April 1920
1-Month
1.59"
(40.39mm)
1.33"
(33.78mm)
0.26"
(6.61mm)
92nd Driest
Driest since:
1909
38th Wettest
Wettest since:
1935
Ties: 1953
Mar–Apr 1920
2-Month
5.03"
(127.76mm)
3.67"
(93.22mm)
1.36"
(34.54mm)
106th Driest
Driest since:
2008
24th Wettest
Wettest since:
1983
Feb–Apr 1920
3-Month
6.82"
(173.23mm)
6.39"
(162.31mm)
0.43"
(10.92mm)
81st Driest
Driest since:
1997
49th Wettest
Wettest since:
1983
Ties: 1948, 2010
Jan–Apr 1920
4-Month
7.54"
(191.52mm)
9.37"
(238.00mm)
-1.83"
(-46.48mm)
50th Driest
Driest since:
2022
80th Wettest
Wettest since:
1995
Dec 1919–Apr 1920
5-Month
9.88"
(250.95mm)
11.92"
(302.77mm)
-2.04"
(-51.82mm)
45th Driest
Driest since:
1977
84th Wettest
Wettest since:
1978
Nov 1919–Apr 1920
6-Month
10.65"
(270.51mm)
13.79"
(350.27mm)
-3.14"
(-79.76mm)
33rd Driest
Driest since:
1977
96th Wettest
Wettest since:
1983
Oct 1919–Apr 1920
7-Month
11.21"
(284.73mm)
14.82"
(376.43mm)
-3.61"
(-91.70mm)
32nd Driest
Driest since:
1977
97th Wettest
Wettest since:
1983
Sep 1919–Apr 1920
8-Month
12.16"
(308.86mm)
15.31"
(388.87mm)
-3.15"
(-80.01mm)
41st Driest
Driest since:
1977
88th Wettest
Wettest since:
1983
Aug 1919–Apr 1920
9-Month
12.28"
(311.91mm)
15.70"
(398.78mm)
-3.42"
(-86.87mm)
36th Driest
Driest since:
1977
93rd Wettest
Wettest since:
1983
Jul 1919–Apr 1920
10-Month
12.59"
(319.79mm)
16.03"
(407.16mm)
-3.44"
(-87.37mm)
38th Driest
Driest since:
2021
91st Wettest
Wettest since:
1983
Jun 1919–Apr 1920
11-Month
12.60"
(320.04mm)
16.52"
(419.61mm)
-3.92"
(-99.57mm)
31st Driest
Driest since:
2021
98th Wettest
Wettest since:
1983
May 1919–Apr 1920
12-Month
13.10"
(332.74mm)
17.44"
(442.98mm)
-4.34"
(-110.24mm)
23rd Driest
Driest since:
1977
106th Wettest
Wettest since:
1983
Nov 1918–Apr 1920
18-Month
25.22"
(640.59mm)
31.22"
(792.99mm)
-6.00"
(-152.40mm)
27th Driest
Driest since:
1977
101st Wettest
Wettest since:
1983
May 1918–Apr 1920
24-Month
29.73"
(755.14mm)
34.90"
(886.46mm)
-5.17"
(-131.32mm)
30th Driest
Driest since:
1977
98th Wettest
Wettest since:
1983
May 1917–Apr 1920
36-Month
43.59"
(1,107.19mm)
52.30"
(1,328.42mm)
-8.71"
(-221.23mm)
21st Driest
Driest to Date
2022
106th Wettest
Wettest since:
1984
May 1916–Apr 1920
48-Month
58.56"
(1,487.42mm)
69.56"
(1,766.82mm)
-11.00"
(-279.40mm)
16th Driest
Driest to Date
2015
110th Wettest
Wettest since:
1998
May 1915–Apr 1920
60-Month
78.44"
(1,992.38mm)
86.83"
(2,205.48mm)
-8.39"
(-213.10mm)
27th Driest
Driest to Date
1933
98th Wettest
Wettest since:
1999

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