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 1904

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 1904
1-Month
1.31"
(33.27mm)
1.11"
(28.19mm)
0.20"
(5.08mm)
94th Driest
Driest since:
1974
35th Wettest
Wettest since:
2015
Apr–May 1904
2-Month
1.80"
(45.72mm)
2.17"
(55.12mm)
-0.37"
(-9.40mm)
47th Driest
Driest since:
2002
82nd Wettest
Wettest since:
1941
Ties: 1903
Mar–May 1904
3-Month
2.87"
(72.90mm)
3.33"
(84.58mm)
-0.46"
(-11.68mm)
43rd Driest
Driest since:
2002
86th Wettest
Wettest since:
1941
Feb–May 1904
4-Month
3.53"
(89.66mm)
4.33"
(109.98mm)
-0.80"
(-20.32mm)
38th Driest
Driest since:
2002
91st Wettest
Wettest since:
1905
Ties: 1913
Jan–May 1904
5-Month
3.90"
(99.06mm)
5.31"
(134.87mm)
-1.41"
(-35.81mm)
24th Driest
Driest since:
1972
105th Wettest
Wettest since:
1905
Dec 1903–May 1904
6-Month
4.10"
(104.14mm)
6.32"
(160.53mm)
-2.22"
(-56.39mm)
6th Driest
Driest since:
2002
122nd Wettest
Wettest since:
1905
Nov 1903–May 1904
7-Month
4.27"
(108.46mm)
7.21"
(183.13mm)
-2.94"
(-74.67mm)
5th Driest
Driest since:
2002
123rd Wettest
Wettest since:
1941
Oct 1903–May 1904
8-Month
4.79"
(121.67mm)
8.34"
(211.84mm)
-3.55"
(-90.17mm)
3rd Driest
Driest since:
2002
125th Wettest
Wettest since:
1941
Sep 1903–May 1904
9-Month
6.22"
(157.99mm)
9.71"
(246.63mm)
-3.49"
(-88.64mm)
3rd Driest
Driest since:
2002
125th Wettest
Wettest since:
1941
Aug 1903–May 1904
10-Month
7.61"
(193.29mm)
11.72"
(297.69mm)
-4.11"
(-104.40mm)
4th Driest
Driest since:
2002
124th Wettest
Wettest since:
1941
Jul 1903–May 1904
11-Month
8.67"
(220.22mm)
13.59"
(345.19mm)
-4.92"
(-124.97mm)
3rd Driest
Driest since:
2021
125th Wettest
Wettest since:
1941
Jun 1903–May 1904
12-Month
10.63"
(270.00mm)
14.53"
(369.06mm)
-3.90"
(-99.06mm)
6th Driest
Driest since:
2021
122nd Wettest
Wettest since:
1905
Dec 1902–May 1904
18-Month
16.68"
(423.67mm)
20.86"
(529.84mm)
-4.18"
(-106.17mm)
13th Driest
Driest since:
2021
114th Wettest
Wettest since:
1942
Jun 1902–May 1904
24-Month
23.50"
(596.90mm)
29.05"
(737.87mm)
-5.55"
(-140.97mm)
9th Driest
Driest since:
2021
118th Wettest
Wettest since:
1942
Jun 1901–May 1904
36-Month
33.93"
(861.82mm)
43.54"
(1,105.92mm)
-9.61"
(-244.10mm)
2nd Driest
Driest since:
2022
124th Wettest
Wettest since:
1907
Jun 1900–May 1904
48-Month
46.31"
(1,176.27mm)
58.01"
(1,473.45mm)
-11.70"
(-297.18mm)
1st Driest
Driest since:
1904
124th Wettest
Wettest since:
1986
Jun 1899–May 1904
60-Month
60.06"
(1,525.52mm)
72.48"
(1,840.99mm)
-12.42"
(-315.47mm)
2nd Driest
Driest since:
1957
122nd Wettest
Wettest since:
1987

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