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, August 1909

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
August 1909
1-Month 		3.14"
(79.76mm)		 2.02"
(51.31mm)		 1.12"
(28.45mm)		 127th Driest
Driest since:
 1962
2nd Wettest
Wettest to Date
 1963
Jul–Aug 1909
2-Month 		5.11"
(129.79mm)		 3.89"
(98.81mm)		 1.22"
(30.98mm)		 122nd Driest
Driest since:
 2020
7th Wettest
Wettest to Date
 1921
Jun–Aug 1909
3-Month 		5.81"
(147.57mm)		 4.83"
(122.68mm)		 0.98"
(24.89mm)		 115th Driest
Driest since:
 2020
14th Wettest
Wettest to Date
 1921
May–Aug 1909
4-Month 		6.40"
(162.56mm)		 5.94"
(150.88mm)		 0.46"
(11.68mm)		 89th Driest
Driest since:
 2020
40th Wettest
Wettest since:
 1921
Apr–Aug 1909
5-Month 		7.18"
(182.37mm)		 7.00"
(177.80mm)		 0.18"
(4.57mm)		 84th Driest
Driest since:
 2020
45th Wettest
Wettest since:
 1999
Ties: 2017
Mar–Aug 1909
6-Month 		8.47"
(215.14mm)		 8.15"
(207.01mm)		 0.32"
(8.13mm)		 88th Driest
Driest since:
 2002
41st Wettest
Wettest since:
 1941
Feb–Aug 1909
7-Month 		9.73"
(247.14mm)		 9.16"
(232.66mm)		 0.57"
(14.48mm)		 91st Driest
Driest since:
 2002
38th Wettest
Wettest since:
 1941
Jan–Aug 1909
8-Month 		11.08"
(281.43mm)		 10.14"
(257.56mm)		 0.94"
(23.87mm)		 95th Driest
Driest since:
 2002
34th Wettest
Wettest since:
 1941
Dec 1908–Aug 1909
9-Month 		12.71"
(322.83mm)		 11.15"
(283.21mm)		 1.56"
(39.62mm)		 106th Driest
Driest since:
 2002
22nd Wettest
Wettest since:
 1941
Ties: 1984
Nov 1908–Aug 1909
10-Month 		13.55"
(344.17mm)		 12.04"
(305.82mm)		 1.51"
(38.35mm)		 103rd Driest
Driest since:
 2002
25th Wettest
Wettest since:
 1941
Ties: 1919
Oct 1908–Aug 1909
11-Month 		14.92"
(378.97mm)		 13.17"
(334.52mm)		 1.75"
(44.45mm)		 105th Driest
Driest since:
 2002
23rd Wettest
Wettest since:
 1941
Sep 1908–Aug 1909
12-Month 		15.92"
(404.37mm)		 14.54"
(369.32mm)		 1.38"
(35.05mm)		 95th Driest
Driest since:
 2002
33rd Wettest
Wettest since:
 1941
Mar 1908–Aug 1909
18-Month 		24.28"
(616.71mm)		 22.69"
(576.33mm)		 1.59"
(40.38mm)		 96th Driest
Driest since:
 2002
32nd Wettest
Wettest since:
 1942
Sep 1907–Aug 1909
24-Month 		30.66"
(778.76mm)		 29.09"
(738.89mm)		 1.57"
(39.87mm)		 96th Driest
Driest since:
 2003
31st Wettest
Wettest since:
 1942
Sep 1906–Aug 1909
36-Month 		48.64"
(1,235.46mm)		 43.58"
(1,106.93mm)		 5.06"
(128.53mm)		 112th Driest
Driest since:
 1956
14th Wettest
Wettest since:
 1907
Sep 1905–Aug 1909
48-Month 		66.67"
(1,693.42mm)		 58.05"
(1,474.47mm)		 8.62"
(218.95mm)		 119th Driest
Driest since:
 1956
6th Wettest
Wettest since:
 1986
Sep 1904–Aug 1909
60-Month 		85.15"
(2,162.81mm)		 72.53"
(1,842.26mm)		 12.62"
(320.55mm)		 121st Driest
Driest since:
 2004
3rd Wettest
Wettest to Date
 1987

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