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 1938

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
April 1938
1-Month 		2.23"
(56.64mm)		 1.84"
(46.74mm)		 0.39"
(9.90mm)		 97th Driest
Driest since:
 2002
32nd Wettest
Wettest since:
 1900
Mar–Apr 1938
2-Month 		5.02"
(127.51mm)		 3.35"
(85.09mm)		 1.67"
(42.42mm)		 120th Driest
Driest since:
 2002
9th Wettest
Wettest since:
 1906
Feb–Apr 1938
3-Month 		6.19"
(157.23mm)		 4.44"
(112.78mm)		 1.75"
(44.45mm)		 122nd Driest
Driest since:
 2002
7th Wettest
Wettest since:
 1905
Jan–Apr 1938
4-Month 		7.24"
(183.90mm)		 5.51"
(139.95mm)		 1.73"
(43.95mm)		 120th Driest
Driest since:
 2002
9th Wettest
Wettest since:
 1905
Dec 1937–Apr 1938
5-Month 		8.68"
(220.47mm)		 6.58"
(167.13mm)		 2.10"
(53.34mm)		 117th Driest
Driest since:
 2002
11th Wettest
Wettest since:
 1905
Nov 1937–Apr 1938
6-Month 		9.54"
(242.32mm)		 7.65"
(194.31mm)		 1.89"
(48.01mm)		 113th Driest
Driest since:
 1904
15th Wettest
Wettest since:
 1984
Oct 1937–Apr 1938
7-Month 		10.54"
(267.72mm)		 8.98"
(228.09mm)		 1.56"
(39.63mm)		 105th Driest
Driest since:
 2002
23rd Wettest
Wettest since:
 1942
Sep 1937–Apr 1938
8-Month 		11.79"
(299.47mm)		 10.41"
(264.41mm)		 1.38"
(35.06mm)		 96th Driest
Driest since:
 1902, 2002
32nd Wettest
Wettest since:
 1942
Aug 1937–Apr 1938
9-Month 		13.32"
(338.33mm)		 12.42"
(315.47mm)		 0.90"
(22.86mm)		 82nd Driest
Driest since:
 2002
46th Wettest
Wettest since:
 1942
Jul 1937–Apr 1938
10-Month 		15.21"
(386.33mm)		 14.52"
(368.81mm)		 0.69"
(17.52mm)		 80th Driest
Driest since:
 1902
48th Wettest
Wettest since:
 1942
Jun 1937–Apr 1938
11-Month 		17.05"
(433.07mm)		 16.07"
(408.18mm)		 0.98"
(24.89mm)		 86th Driest
Driest since:
 1981
42nd Wettest
Wettest since:
 1942
May 1937–Apr 1938
12-Month 		18.34"
(465.84mm)		 18.08"
(459.23mm)		 0.26"
(6.61mm)		 70th Driest
Driest since:
 2013
58th Wettest
Wettest since:
 1942
Ties: 1931
Nov 1936–Apr 1938
18-Month 		25.01"
(635.25mm)		 25.76"
(654.30mm)		 -0.75"
(-19.05mm)		 53rd Driest
Driest since:
 2013
74th Wettest
Wettest since:
 1942
May 1936–Apr 1938
24-Month 		35.96"
(913.38mm)		 36.16"
(918.46mm)		 -0.20"
(-5.08mm)		 63rd Driest
Driest since:
 1902
64th Wettest
Wettest since:
 1942
May 1935–Apr 1938
36-Month 		52.62"
(1,336.55mm)		 54.22"
(1,377.19mm)		 -1.60"
(-40.64mm)		 45th Driest
Driest since:
 1955
81st Wettest
Wettest since:
 1985
Ties: 1966
May 1934–Apr 1938
48-Month 		66.70"
(1,694.18mm)		 72.24"
(1,834.90mm)		 -5.54"
(-140.72mm)		 25th Driest
Driest since:
 1904
100th Wettest
Wettest since:
 1986
May 1933–Apr 1938
60-Month 		82.61"
(2,098.29mm)		 90.24"
(2,292.10mm)		 -7.63"
(-193.81mm)		 21st Driest
Driest since:
 1957
103rd Wettest
Wettest since:
 1987

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