Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Colorado

Precipitation Rankings, April 1930

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
April 1930
1-Month 		1.20"
(30.48mm)		 1.84"
(46.74mm)		 -0.64"
(-16.26mm)		 31st Driest
Driest since:
 2002
98th Wettest
Wettest since:
 1900
Mar–Apr 1930
2-Month 		2.14"
(54.36mm)		 3.35"
(85.09mm)		 -1.21"
(-30.73mm)		 17th Driest
Driest since:
 2002
112th Wettest
Wettest since:
 1906
Feb–Apr 1930
3-Month 		2.83"
(71.88mm)		 4.44"
(112.78mm)		 -1.61"
(-40.90mm)		 8th Driest
Driest since:
 2002
121st Wettest
Wettest since:
 1905
Jan–Apr 1930
4-Month 		4.43"
(112.52mm)		 5.51"
(139.95mm)		 -1.08"
(-27.43mm)		 24th Driest
Driest since:
 2002
105th Wettest
Wettest since:
 1905
Dec 1929–Apr 1930
5-Month 		4.72"
(119.89mm)		 6.58"
(167.13mm)		 -1.86"
(-47.24mm)		 11th Driest
Driest since:
 2002
117th Wettest
Wettest since:
 1905
Nov 1929–Apr 1930
6-Month 		5.64"
(143.26mm)		 7.65"
(194.31mm)		 -2.01"
(-51.05mm)		 12th Driest
Driest since:
 1904
116th Wettest
Wettest since:
 1984
Oct 1929–Apr 1930
7-Month 		6.92"
(175.77mm)		 8.98"
(228.09mm)		 -2.06"
(-52.32mm)		 15th Driest
Driest since:
 2002
113th Wettest
Wettest since:
 1942
Sep 1929–Apr 1930
8-Month 		9.58"
(243.33mm)		 10.41"
(264.41mm)		 -0.83"
(-21.08mm)		 50th Driest
Driest since:
 1902, 2002
78th Wettest
Wettest since:
 1942
Aug 1929–Apr 1930
9-Month 		12.48"
(316.99mm)		 12.42"
(315.47mm)		 0.06"
(1.52mm)		 67th Driest
Driest since:
 2002
61st Wettest
Wettest since:
 1942
Jul 1929–Apr 1930
10-Month 		15.34"
(389.64mm)		 14.52"
(368.81mm)		 0.82"
(20.83mm)		 82nd Driest
Driest since:
 1902
46th Wettest
Wettest since:
 1942
Jun 1929–Apr 1930
11-Month 		15.97"
(405.64mm)		 16.07"
(408.18mm)		 -0.10"
(-2.54mm)		 65th Driest
Driest since:
 1981
63rd Wettest
Wettest since:
 1942
Ties: 2009
May 1929–Apr 1930
12-Month 		17.72"
(450.09mm)		 18.08"
(459.23mm)		 -0.36"
(-9.14mm)		 56th Driest
Driest since:
 2013
72nd Wettest
Wettest since:
 1942
Nov 1928–Apr 1930
18-Month 		25.51"
(647.95mm)		 25.76"
(654.30mm)		 -0.25"
(-6.35mm)		 61st Driest
Driest since:
 2013
66th Wettest
Wettest since:
 1942
Ties: 1992
May 1928–Apr 1930
24-Month 		37.47"
(951.74mm)		 36.16"
(918.46mm)		 1.31"
(33.28mm)		 86th Driest
Driest since:
 1902
41st Wettest
Wettest since:
 1942
May 1927–Apr 1930
36-Month 		56.19"
(1,427.23mm)		 54.22"
(1,377.19mm)		 1.97"
(50.04mm)		 86th Driest
Driest since:
 1955
40th Wettest
Wettest since:
 1985
May 1926–Apr 1930
48-Month 		74.34"
(1,888.24mm)		 72.24"
(1,834.90mm)		 2.10"
(53.34mm)		 79th Driest
Driest since:
 1904
46th Wettest
Wettest since:
 1986
Ties: 1920
May 1925–Apr 1930
60-Month 		94.39"
(2,397.51mm)		 90.24"
(2,292.10mm)		 4.15"
(105.41mm)		 94th Driest
Driest since:
 1957
30th Wettest
Wettest since:
 1987

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