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 1978

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
July 1978
1-Month
0.99"
(25.15mm)
1.87"
(47.50mm)
-0.88"
(-22.35mm)
3rd Driest
Driest since:
2003
126th Wettest
Wettest since:
1914
Jun–Jul 1978
2-Month
1.94"
(49.28mm)
2.81"
(71.37mm)
-0.87"
(-22.09mm)
12th Driest
Driest since:
1980
117th Wettest
Wettest since:
1921
May–Jul 1978
3-Month
3.48"
(88.39mm)
3.93"
(99.82mm)
-0.45"
(-11.43mm)
43rd Driest
Driest since:
2002
86th Wettest
Wettest since:
2015
Ties: 2001
Apr–Jul 1978
4-Month
4.45"
(113.03mm)
4.99"
(126.75mm)
-0.54"
(-13.72mm)
43rd Driest
Driest since:
2002
86th Wettest
Wettest since:
1914
Ties: 1901
Mar–Jul 1978
5-Month
6.37"
(161.80mm)
6.14"
(155.96mm)
0.23"
(5.84mm)
86th Driest
Driest since:
2002
43rd Wettest
Wettest since:
1941
Feb–Jul 1978
6-Month
7.86"
(199.64mm)
7.14"
(181.36mm)
0.72"
(18.28mm)
98th Driest
Driest since:
2002
31st Wettest
Wettest since:
1941
Jan–Jul 1978
7-Month
9.74"
(247.40mm)
8.12"
(206.25mm)
1.62"
(41.15mm)
114th Driest
Driest since:
2002
15th Wettest
Wettest since:
1905
Ties: 1921
Dec 1977–Jul 1978
8-Month
10.51"
(266.95mm)
9.13"
(231.90mm)
1.38"
(35.05mm)
101st Driest
Driest since:
2002
27th Wettest
Wettest since:
1941
Nov 1977–Jul 1978
9-Month
11.22"
(284.99mm)
10.02"
(254.51mm)
1.20"
(30.48mm)
97th Driest
Driest since:
2002
31st Wettest
Wettest since:
1941
Oct 1977–Jul 1978
10-Month
12.09"
(307.09mm)
11.15"
(283.21mm)
0.94"
(23.88mm)
87th Driest
Driest since:
2002
41st Wettest
Wettest since:
1941
Sep 1977–Jul 1978
11-Month
13.15"
(334.01mm)
12.52"
(318.01mm)
0.63"
(16.00mm)
84th Driest
Driest since:
2002
44th Wettest
Wettest since:
1941
Aug 1977–Jul 1978
12-Month
15.44"
(392.18mm)
14.53"
(369.06mm)
0.91"
(23.12mm)
86th Driest
Driest since:
2002
42nd Wettest
Wettest since:
1941
Ties: 1962
Feb 1977–Jul 1978
18-Month
21.61"
(548.89mm)
21.67"
(550.42mm)
-0.06"
(-1.53mm)
70th Driest
Driest since:
2002
58th Wettest
Wettest since:
1942
Aug 1976–Jul 1978
24-Month
26.89"
(683.01mm)
29.06"
(738.12mm)
-2.17"
(-55.11mm)
35th Driest
Driest since:
2003
92nd Wettest
Wettest since:
1942
Ties: 1939
Aug 1975–Jul 1978
36-Month
38.96"
(989.58mm)
43.55"
(1,106.17mm)
-4.59"
(-116.59mm)
26th Driest
Driest since:
1956
100th Wettest
Wettest since:
1907
Aug 1974–Jul 1978
48-Month
54.12"
(1,374.65mm)
58.02"
(1,473.71mm)
-3.90"
(-99.06mm)
33rd Driest
Driest since:
1956
92nd Wettest
Wettest since:
1986
Ties: 1948
Aug 1973–Jul 1978
60-Month
64.16"
(1,629.66mm)
72.50"
(1,841.50mm)
-8.34"
(-211.84mm)
12th Driest
Driest since:
1904
112th Wettest
Wettest since:
1987

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