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, May 1899

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
May 1899
1-Month		0.36"
(9.14mm)		1.11"
(28.19mm)		-0.75"
(-19.05mm)		5th Driest
Driest to Date
1974
124th Wettest
Wettest since:
2015
Apr–May 1899
2-Month		0.85"
(21.59mm)		2.17"
(55.12mm)		-1.32"
(-33.53mm)		2nd Driest
Driest to Date
2002
127th Wettest
Wettest since:
1941
Mar–May 1899
3-Month		1.84"
(46.74mm)		3.33"
(84.58mm)		-1.49"
(-37.84mm)		11th Driest
Driest to Date
2002
118th Wettest
Wettest since:
1941
Feb–May 1899
4-Month		2.79"
(70.87mm)		4.33"
(109.98mm)		-1.54"
(-39.11mm)		14th Driest
Driest since:
2002
115th Wettest
Wettest since:
1905
Jan–May 1899
5-Month		3.55"
(90.17mm)		5.31"
(134.87mm)		-1.76"
(-44.70mm)		14th Driest
Driest since:
1972
115th Wettest
Wettest since:
1905
Dec 1898–May 1899
6-Month		4.74"
(120.40mm)		6.32"
(160.53mm)		-1.58"
(-40.13mm)		24th Driest
Driest since:
2002
104th Wettest
Wettest since:
1905
Nov 1898–May 1899
7-Month		5.52"
(140.21mm)		7.21"
(183.13mm)		-1.69"
(-42.92mm)		30th Driest
Driest since:
2002
98th Wettest
Wettest since:
1941
Oct 1898–May 1899
8-Month		5.91"
(150.11mm)		8.34"
(211.84mm)		-2.43"
(-61.73mm)		15th Driest
Driest to Date
2002
113th Wettest
Wettest since:
1941
Ties: 1934
Sep 1898–May 1899
9-Month		6.41"
(162.81mm)		9.71"
(246.63mm)		-3.30"
(-83.82mm)		6th Driest
Driest to Date
2002
122nd Wettest
Wettest since:
1941
Aug 1898–May 1899
10-Month		8.24"
(209.30mm)		11.72"
(297.69mm)		-3.48"
(-88.39mm)		7th Driest
Driest to Date
2002
121st Wettest
Wettest since:
1941
Jul 1898–May 1899
11-Month		10.37"
(263.40mm)		13.59"
(345.19mm)		-3.22"
(-81.79mm)		9th Driest
Driest to Date
2021
119th Wettest
Wettest since:
1941
Ties: 1963
Jun 1898–May 1899
12-Month		11.82"
(300.23mm)		14.53"
(369.06mm)		-2.71"
(-68.83mm)		19th Driest
Driest to Date
2021
109th Wettest
Wettest since:
1905
Dec 1897–May 1899
18-Month		17.98"
(456.69mm)		20.86"
(529.84mm)		-2.88"
(-73.15mm)		25th Driest
Driest to Date
2021
102nd Wettest
Wettest since:
1942
Ties: 1918
Jun 1897–May 1899
24-Month		26.70"
(678.18mm)		29.05"
(737.87mm)		-2.35"
(-59.69mm)		34th Driest
Driest to Date
2021
93rd Wettest
Wettest since:
1942
Ties: 1961
Jun 1896–May 1899
36-Month		43.75"
(1,111.25mm)		43.54"
(1,105.92mm)		0.21"
(5.33mm)		74th Driest
Driest to Date
2022
52nd Wettest
Wettest since:
1907
Jun 1895–May 1899
48-Month		56.21"
(1,427.73mm)		58.01"
(1,473.45mm)		-1.80"
(-45.72mm)		53rd Driest
Driest to Date
1904
72nd Wettest
Wettest to Date
1986

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