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 1957

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1957
1-Month 		0.24"
(6.10mm)		 1.36"
(34.54mm)		 -1.12"
(-28.44mm)		 3rd Driest
Driest since:
 1953, 1956
126th Wettest
Wettest since:
 2013
Aug–Sep 1957
2-Month 		3.02"
(76.71mm)		 3.38"
(85.85mm)		 -0.36"
(-9.14mm)		 46th Driest
Driest since:
 2020
83rd Wettest
Wettest since:
 2013
Jul–Sep 1957
3-Month 		5.17"
(131.32mm)		 5.25"
(133.35mm)		 -0.08"
(-2.03mm)		 61st Driest
Driest since:
 2020
68th Wettest
Wettest since:
 2013
Ties: 2010
Jun–Sep 1957
4-Month 		6.10"
(154.94mm)		 6.19"
(157.23mm)		 -0.09"
(-2.29mm)		 65th Driest
Driest since:
 2020
64th Wettest
Wettest since:
 1927
May–Sep 1957
5-Month 		8.38"
(212.85mm)		 7.30"
(185.42mm)		 1.08"
(27.43mm)		 107th Driest
Driest since:
 2020
22nd Wettest
Wettest since:
 1941
Ties: 1992
Apr–Sep 1957
6-Month 		10.10"
(256.54mm)		 8.36"
(212.34mm)		 1.74"
(44.20mm)		 116th Driest
Driest since:
 2020
13th Wettest
Wettest since:
 1941
Mar–Sep 1957
7-Month 		11.28"
(286.51mm)		 9.51"
(241.55mm)		 1.77"
(44.96mm)		 115th Driest
Driest since:
 1956
14th Wettest
Wettest since:
 1941
Feb–Sep 1957
8-Month 		11.96"
(303.78mm)		 10.52"
(267.21mm)		 1.44"
(36.57mm)		 110th Driest
Driest since:
 1956
19th Wettest
Wettest since:
 1941
Ties: 1914
Jan–Sep 1957
9-Month 		13.99"
(355.35mm)		 11.50"
(292.10mm)		 2.49"
(63.25mm)		 124th Driest
Driest since:
 1956
5th Wettest
Wettest since:
 1941
Dec 1956–Sep 1957
10-Month 		14.48"
(367.79mm)		 12.51"
(317.75mm)		 1.97"
(50.04mm)		 109th Driest
Driest since:
 1956
19th Wettest
Wettest since:
 1941
Nov 1956–Sep 1957
11-Month 		14.80"
(375.92mm)		 13.40"
(340.36mm)		 1.40"
(35.56mm)		 97th Driest
Driest since:
 1956
31st Wettest
Wettest since:
 1941
Oct 1956–Sep 1957
12-Month 		15.44"
(392.18mm)		 14.53"
(369.06mm)		 0.91"
(23.12mm)		 87th Driest
Driest since:
 1956
41st Wettest
Wettest since:
 1941
Apr 1956–Sep 1957
18-Month 		20.21"
(513.33mm)		 22.92"
(582.17mm)		 -2.71"
(-68.84mm)		 24th Driest
Driest since:
 2021
104th Wettest
Wettest since:
 1941
Oct 1955–Sep 1957
24-Month 		24.33"
(617.98mm)		 29.08"
(738.63mm)		 -4.75"
(-120.65mm)		 10th Driest
Driest since:
 1956
117th Wettest
Wettest since:
 1942
Oct 1954–Sep 1957
36-Month 		36.75"
(933.45mm)		 43.57"
(1,106.68mm)		 -6.82"
(-173.23mm)		 10th Driest
Driest since:
 1956
116th Wettest
Wettest since:
 1907
Oct 1953–Sep 1957
48-Month 		49.02"
(1,245.11mm)		 58.05"
(1,474.47mm)		 -9.03"
(-229.36mm)		 5th Driest
Driest since:
 1956
120th Wettest
Wettest since:
 1986
Oct 1952–Sep 1957
60-Month 		59.98"
(1,523.49mm)		 72.53"
(1,842.26mm)		 -12.55"
(-318.77mm)		 1st Driest
Driest to Date
 1957
123rd Wettest
Wettest since:
 1986

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