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, May 1972

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
May 1972
1-Month
0.41"
(10.41mm)
0.92"
(23.37mm)
-0.51"
(-12.96mm)
19th Driest
Driest since:
1924
110th Wettest
Wettest since:
1998
Ties: 1937, 1943
Apr–May 1972
2-Month
1.41"
(35.81mm)
2.26"
(57.40mm)
-0.85"
(-21.59mm)
24th Driest
Driest since:
1909
105th Wettest
Wettest since:
1896
Mar–May 1972
3-Month
2.23"
(56.64mm)
4.59"
(116.59mm)
-2.36"
(-59.95mm)
9th Driest
Driest since:
2008
120th Wettest
Wettest since:
1995
Feb–May 1972
4-Month
3.57"
(90.68mm)
7.31"
(185.67mm)
-3.74"
(-94.99mm)
7th Driest
Driest since:
1997
122nd Wettest
Wettest since:
1998
Jan–May 1972
5-Month
4.82"
(122.43mm)
10.29"
(261.37mm)
-5.47"
(-138.94mm)
4th Driest
Driest since:
2022
125th Wettest
Wettest since:
1998
Dec 1971–May 1972
6-Month
8.56"
(217.42mm)
12.84"
(326.14mm)
-4.28"
(-108.72mm)
18th Driest
Driest since:
1924
110th Wettest
Wettest since:
1995
Nov 1971–May 1972
7-Month
10.22"
(259.59mm)
14.71"
(373.63mm)
-4.49"
(-114.04mm)
18th Driest
Driest since:
1977
110th Wettest
Wettest since:
1995
Oct 1971–May 1972
8-Month
10.81"
(274.57mm)
15.74"
(399.80mm)
-4.93"
(-125.23mm)
11th Driest
Driest since:
1977
117th Wettest
Wettest since:
1983
Sep 1971–May 1972
9-Month
11.28"
(286.51mm)
16.23"
(412.24mm)
-4.95"
(-125.73mm)
11th Driest
Driest since:
2021
117th Wettest
Wettest since:
1983
Aug 1971–May 1972
10-Month
11.76"
(298.70mm)
16.62"
(422.15mm)
-4.86"
(-123.45mm)
13th Driest
Driest since:
2021
115th Wettest
Wettest since:
1983
Jul 1971–May 1972
11-Month
12.03"
(305.56mm)
16.95"
(430.53mm)
-4.92"
(-124.97mm)
13th Driest
Driest since:
2021
115th Wettest
Wettest since:
1983
Jun 1971–May 1972
12-Month
12.56"
(319.02mm)
17.44"
(442.98mm)
-4.88"
(-123.96mm)
12th Driest
Driest since:
2021
116th Wettest
Wettest since:
1983
Dec 1970–May 1972
18-Month
23.98"
(609.09mm)
30.25"
(768.35mm)
-6.27"
(-159.26mm)
22nd Driest
Driest since:
1977
105th Wettest
Wettest since:
1983
Jun 1970–May 1972
24-Month
31.36"
(796.54mm)
34.89"
(886.21mm)
-3.53"
(-89.67mm)
40th Driest
Driest since:
2022
87th Wettest
Wettest since:
1983
Jun 1969–May 1972
36-Month
48.70"
(1,236.98mm)
52.30"
(1,328.42mm)
-3.60"
(-91.44mm)
49th Driest
Driest since:
2022
77th Wettest
Wettest since:
1984
Jun 1968–May 1972
48-Month
72.64"
(1,845.06mm)
69.56"
(1,766.82mm)
3.08"
(78.24mm)
84th Driest
Driest since:
2015
41st Wettest
Wettest since:
1998
Jun 1967–May 1972
60-Month
87.31"
(2,217.67mm)
86.83"
(2,205.48mm)
0.48"
(12.19mm)
75th Driest
Driest since:
1933
49th Wettest
Wettest since:
1999

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