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, July 1990

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
July 1990
1-Month
2.67"
(67.82mm)
1.87"
(47.50mm)
0.80"
(20.32mm)
119th Driest
Driest since:
2003
10th Wettest
Wettest since:
1914
Ties: 1929
Jun–Jul 1990
2-Month
3.18"
(80.77mm)
2.81"
(71.37mm)
0.37"
(9.40mm)
97th Driest
Driest since:
1980
32nd Wettest
Wettest since:
1921
May–Jul 1990
3-Month
4.13"
(104.90mm)
3.93"
(99.82mm)
0.20"
(5.08mm)
80th Driest
Driest since:
2002
49th Wettest
Wettest since:
2015
Apr–Jul 1990
4-Month
5.40"
(137.16mm)
4.99"
(126.75mm)
0.41"
(10.41mm)
97th Driest
Driest since:
2002
32nd Wettest
Wettest since:
1914
Ties: 1973
Mar–Jul 1990
5-Month
6.56"
(166.62mm)
6.14"
(155.96mm)
0.42"
(10.66mm)
93rd Driest
Driest since:
2002
36th Wettest
Wettest since:
1941
Feb–Jul 1990
6-Month
7.57"
(192.28mm)
7.14"
(181.36mm)
0.43"
(10.92mm)
90th Driest
Driest since:
2002
39th Wettest
Wettest since:
1941
Jan–Jul 1990
7-Month
8.45"
(214.63mm)
8.12"
(206.25mm)
0.33"
(8.38mm)
78th Driest
Driest since:
2002
51st Wettest
Wettest since:
1905
Dec 1989–Jul 1990
8-Month
8.86"
(225.04mm)
9.13"
(231.90mm)
-0.27"
(-6.86mm)
63rd Driest
Driest since:
2002
65th Wettest
Wettest since:
1941
Nov 1989–Jul 1990
9-Month
9.08"
(230.63mm)
10.02"
(254.51mm)
-0.94"
(-23.88mm)
47th Driest
Driest since:
2002
81st Wettest
Wettest since:
1941
Oct 1989–Jul 1990
10-Month
9.92"
(251.97mm)
11.15"
(283.21mm)
-1.23"
(-31.24mm)
45th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Sep 1989–Jul 1990
11-Month
10.83"
(275.08mm)
12.52"
(318.01mm)
-1.69"
(-42.93mm)
36th Driest
Driest since:
2002
92nd Wettest
Wettest since:
1941
Aug 1989–Jul 1990
12-Month
12.79"
(324.87mm)
14.53"
(369.06mm)
-1.74"
(-44.19mm)
36th Driest
Driest since:
2002
92nd Wettest
Wettest since:
1941
Feb 1989–Jul 1990
18-Month
18.10"
(459.74mm)
21.67"
(550.42mm)
-3.57"
(-90.68mm)
16th Driest
Driest since:
2002
112th Wettest
Wettest since:
1942
Aug 1988–Jul 1990
24-Month
25.28"
(642.11mm)
29.06"
(738.12mm)
-3.78"
(-96.01mm)
24th Driest
Driest since:
2003
103rd Wettest
Wettest since:
1942
Aug 1987–Jul 1990
36-Month
40.47"
(1,027.94mm)
43.55"
(1,106.17mm)
-3.08"
(-78.23mm)
38th Driest
Driest since:
1956
88th Wettest
Wettest since:
1907
Aug 1986–Jul 1990
48-Month
57.35"
(1,456.69mm)
58.02"
(1,473.71mm)
-0.67"
(-17.02mm)
59th Driest
Driest since:
1956
66th Wettest
Wettest since:
1986
Aug 1985–Jul 1990
60-Month
73.89"
(1,876.81mm)
72.50"
(1,841.50mm)
1.39"
(35.31mm)
79th Driest
Driest since:
1904
45th Wettest
Wettest since:
1987

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