Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, September 1997

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1997
1-Month 		2.54"
(64.52mm)		 1.36"
(34.54mm)		 1.18"
(29.98mm)		 124th Driest
Driest since:
 1953, 1956
5th Wettest
Wettest since:
 2013
Aug–Sep 1997
2-Month 		5.13"
(130.30mm)		 3.38"
(85.85mm)		 1.75"
(44.45mm)		 125th Driest
Driest since:
 2020
4th Wettest
Wettest since:
 2013
Jul–Sep 1997
3-Month 		6.83"
(173.48mm)		 5.25"
(133.35mm)		 1.58"
(40.13mm)		 120th Driest
Driest since:
 2020
9th Wettest
Wettest since:
 2013
Jun–Sep 1997
4-Month 		8.21"
(208.53mm)		 6.19"
(157.23mm)		 2.02"
(51.30mm)		 122nd Driest
Driest since:
 2020
7th Wettest
Wettest since:
 1927
May–Sep 1997
5-Month 		9.38"
(238.25mm)		 7.30"
(185.42mm)		 2.08"
(52.83mm)		 123rd Driest
Driest since:
 2020
6th Wettest
Wettest since:
 1941
Apr–Sep 1997
6-Month 		11.09"
(281.69mm)		 8.36"
(212.34mm)		 2.73"
(69.35mm)		 126th Driest
Driest since:
 2020
3rd Wettest
Wettest since:
 1941
Mar–Sep 1997
7-Month 		11.37"
(288.80mm)		 9.51"
(241.55mm)		 1.86"
(47.25mm)		 118th Driest
Driest since:
 1956
11th Wettest
Wettest since:
 1941
Feb–Sep 1997
8-Month 		12.34"
(313.44mm)		 10.52"
(267.21mm)		 1.82"
(46.23mm)		 118th Driest
Driest since:
 1956
11th Wettest
Wettest since:
 1941
Jan–Sep 1997
9-Month 		14.08"
(357.63mm)		 11.50"
(292.10mm)		 2.58"
(65.53mm)		 125th Driest
Driest since:
 1956
4th Wettest
Wettest since:
 1941
Dec 1996–Sep 1997
10-Month 		14.80"
(375.92mm)		 12.51"
(317.75mm)		 2.29"
(58.17mm)		 119th Driest
Driest since:
 1956
9th Wettest
Wettest since:
 1941
Nov 1996–Sep 1997
11-Month 		15.89"
(403.61mm)		 13.40"
(340.36mm)		 2.49"
(63.25mm)		 113th Driest
Driest since:
 1956
15th Wettest
Wettest since:
 1941
Oct 1996–Sep 1997
12-Month 		17.18"
(436.37mm)		 14.53"
(369.06mm)		 2.65"
(67.31mm)		 113th Driest
Driest since:
 1956
15th Wettest
Wettest since:
 1941
Ties: 1984
Apr 1996–Sep 1997
18-Month 		25.59"
(649.99mm)		 22.92"
(582.17mm)		 2.67"
(67.82mm)		 105th Driest
Driest since:
 2021
23rd Wettest
Wettest since:
 1941
Oct 1995–Sep 1997
24-Month 		29.52"
(749.81mm)		 29.08"
(738.63mm)		 0.44"
(11.18mm)		 82nd Driest
Driest since:
 1956
45th Wettest
Wettest since:
 1942
Oct 1994–Sep 1997
36-Month 		47.37"
(1,203.20mm)		 43.57"
(1,106.68mm)		 3.80"
(96.52mm)		 104th Driest
Driest since:
 1956
22nd Wettest
Wettest since:
 1907
Oct 1993–Sep 1997
48-Month 		60.35"
(1,532.89mm)		 58.05"
(1,474.47mm)		 2.30"
(58.42mm)		 90th Driest
Driest since:
 1956
35th Wettest
Wettest since:
 1986
Oct 1992–Sep 1997
60-Month 		77.47"
(1,967.74mm)		 72.53"
(1,842.26mm)		 4.94"
(125.48mm)		 98th Driest
Driest since:
 1957
26th Wettest
Wettest since:
 1986

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