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.

West Climate Region

Precipitation Rankings, May 1967

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1967
1-Month 		0.73"
(18.54mm)		 0.92"
(23.37mm)		 -0.19"
(-4.83mm)		 59th Driest
Driest since:
 1924
70th Wettest
Wettest since:
 1998
Ties: 1902, 1931, 2008
Apr–May 1967
2-Month 		4.03"
(102.36mm)		 2.26"
(57.40mm)		 1.77"
(44.96mm)		 120th Driest
Driest since:
 1909
9th Wettest
Wettest since:
 1896
Mar–May 1967
3-Month 		6.96"
(176.78mm)		 4.59"
(116.59mm)		 2.37"
(60.19mm)		 112th Driest
Driest since:
 2008
17th Wettest
Wettest since:
 1995
Feb–May 1967
4-Month 		7.25"
(184.15mm)		 7.31"
(185.67mm)		 -0.06"
(-1.52mm)		 73rd Driest
Driest since:
 1997
56th Wettest
Wettest since:
 1998
Jan–May 1967
5-Month 		11.42"
(290.07mm)		 10.29"
(261.37mm)		 1.13"
(28.70mm)		 89th Driest
Driest since:
 2022
40th Wettest
Wettest since:
 1998
Dec 1966–May 1967
6-Month 		15.69"
(398.53mm)		 12.84"
(326.14mm)		 2.85"
(72.39mm)		 100th Driest
Driest since:
 1924
28th Wettest
Wettest since:
 1995
Nov 1966–May 1967
7-Month 		18.82"
(478.03mm)		 14.71"
(373.63mm)		 4.11"
(104.40mm)		 107th Driest
Driest since:
 1977
21st Wettest
Wettest since:
 1995
Oct 1966–May 1967
8-Month 		18.98"
(482.09mm)		 15.74"
(399.80mm)		 3.24"
(82.29mm)		 104th Driest
Driest since:
 1977
24th Wettest
Wettest since:
 1983
Sep 1966–May 1967
9-Month 		19.56"
(496.82mm)		 16.23"
(412.24mm)		 3.33"
(84.58mm)		 104th Driest
Driest since:
 2021
24th Wettest
Wettest since:
 1983
Aug 1966–May 1967
10-Month 		19.76"
(501.90mm)		 16.62"
(422.15mm)		 3.14"
(79.75mm)		 101st Driest
Driest since:
 2021
27th Wettest
Wettest since:
 1983
Jul 1966–May 1967
11-Month 		20.01"
(508.25mm)		 16.95"
(430.53mm)		 3.06"
(77.72mm)		 102nd Driest
Driest since:
 2021
26th Wettest
Wettest since:
 1983
Jun 1966–May 1967
12-Month 		20.20"
(513.08mm)		 17.44"
(442.98mm)		 2.76"
(70.10mm)		 100th Driest
Driest since:
 2021
28th Wettest
Wettest since:
 1983
Dec 1965–May 1967
18-Month 		28.20"
(716.28mm)		 30.25"
(768.35mm)		 -2.05"
(-52.07mm)		 47th Driest
Driest since:
 1977
80th Wettest
Wettest since:
 1983
Jun 1965–May 1967
24-Month 		35.32"
(897.13mm)		 34.89"
(886.21mm)		 0.43"
(10.92mm)		 73rd Driest
Driest since:
 2022
54th Wettest
Wettest since:
 1983
Jun 1964–May 1967
36-Month 		54.09"
(1,373.89mm)		 52.30"
(1,328.42mm)		 1.79"
(45.47mm)		 83rd Driest
Driest since:
 2022
43rd Wettest
Wettest since:
 1984
Jun 1963–May 1967
48-Month 		68.21"
(1,732.53mm)		 69.56"
(1,766.82mm)		 -1.35"
(-34.29mm)		 65th Driest
Driest since:
 2015
60th Wettest
Wettest since:
 1998
Jun 1962–May 1967
60-Month 		85.73"
(2,177.54mm)		 86.83"
(2,205.48mm)		 -1.10"
(-27.94mm)		 69th Driest
Driest since:
 1933
55th Wettest
Wettest since:
 1999
Ties: 2008

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