Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Southwest Climate Region

Precipitation Rankings, May 2001

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 2001
1-Month
1.18"
(29.97mm)
1.11"
(28.19mm)
0.07"
(1.78mm)
80th Driest
Driest since:
1974
49th Wettest
Wettest since:
2015
Ties: 2009
Apr–May 2001
2-Month
2.26"
(57.40mm)
2.17"
(55.12mm)
0.09"
(2.28mm)
76th Driest
Driest since:
2002
53rd Wettest
Wettest since:
1941
Ties: 1923, 1958, 1977
Mar–May 2001
3-Month
3.44"
(87.38mm)
3.33"
(84.58mm)
0.11"
(2.80mm)
84th Driest
Driest since:
2002
45th Wettest
Wettest since:
1941
Ties: 1987
Feb–May 2001
4-Month
4.44"
(112.78mm)
4.33"
(109.98mm)
0.11"
(2.80mm)
79th Driest
Driest since:
2002
50th Wettest
Wettest since:
1905
Ties: 1976
Jan–May 2001
5-Month
5.68"
(144.27mm)
5.31"
(134.87mm)
0.37"
(9.40mm)
88th Driest
Driest since:
1972
41st Wettest
Wettest since:
1905
Ties: 1940
Dec 2000–May 2001
6-Month
6.18"
(156.97mm)
6.32"
(160.53mm)
-0.14"
(-3.56mm)
76th Driest
Driest since:
2002
52nd Wettest
Wettest since:
1905
Nov 2000–May 2001
7-Month
7.12"
(180.85mm)
7.21"
(183.13mm)
-0.09"
(-2.28mm)
72nd Driest
Driest since:
2002
56th Wettest
Wettest since:
1941
Oct 2000–May 2001
8-Month
9.98"
(253.49mm)
8.34"
(211.84mm)
1.64"
(41.65mm)
105th Driest
Driest since:
2002
23rd Wettest
Wettest since:
1941
Sep 2000–May 2001
9-Month
10.61"
(269.49mm)
9.71"
(246.63mm)
0.90"
(22.86mm)
91st Driest
Driest since:
2002
37th Wettest
Wettest since:
1941
Ties: 1975
Aug 2000–May 2001
10-Month
12.56"
(319.02mm)
11.72"
(297.69mm)
0.84"
(21.33mm)
91st Driest
Driest since:
2002
37th Wettest
Wettest since:
1941
Ties: 1909
Jul 2000–May 2001
11-Month
13.66"
(346.96mm)
13.59"
(345.19mm)
0.07"
(1.77mm)
72nd Driest
Driest since:
2021
56th Wettest
Wettest since:
1941
Jun 2000–May 2001
12-Month
14.85"
(377.19mm)
14.53"
(369.06mm)
0.32"
(8.13mm)
76th Driest
Driest since:
2021
52nd Wettest
Wettest since:
1905
Ties: 1908, 1944
Dec 1999–May 2001
18-Month
19.76"
(501.90mm)
20.86"
(529.84mm)
-1.10"
(-27.94mm)
52nd Driest
Driest since:
2021
75th Wettest
Wettest since:
1942
Jun 1999–May 2001
24-Month
28.39"
(721.11mm)
29.05"
(737.87mm)
-0.66"
(-16.76mm)
65th Driest
Driest since:
2021
62nd Wettest
Wettest since:
1942
Jun 1998–May 2001
36-Month
44.08"
(1,119.63mm)
43.54"
(1,105.92mm)
0.54"
(13.71mm)
79th Driest
Driest since:
2022
47th Wettest
Wettest since:
1907
Jun 1997–May 2001
48-Month
61.52"
(1,562.61mm)
58.01"
(1,473.45mm)
3.51"
(89.16mm)
101st Driest
Driest since:
1904
24th Wettest
Wettest since:
1986
Jun 1996–May 2001
60-Month
77.51"
(1,968.75mm)
72.48"
(1,840.99mm)
5.03"
(127.76mm)
103rd Driest
Driest since:
1957
21st Wettest
Wettest since:
1987

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