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, January 1901

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
January 1901
1-Month 		0.81"
(20.57mm)		 1.06"
(26.92mm)		 -0.25"
(-6.35mm)		 45th Driest
Driest since:
 1919, 1931
84th Wettest
Wettest since:
 1916
Ties: 1927, 2018
Dec 1900–Jan 1901
2-Month 		1.17"
(29.72mm)		 2.13"
(54.10mm)		 -0.96"
(-24.38mm)		 6th Driest
Driest since:
 1931
122nd Wettest
Wettest since:
 1914
Nov 1900–Jan 1901
3-Month 		1.87"
(47.50mm)		 3.20"
(81.28mm)		 -1.33"
(-33.78mm)		 5th Driest
Driest since:
 1904
123rd Wettest
Wettest since:
 1979
Oct 1900–Jan 1901
4-Month 		2.43"
(61.72mm)		 4.54"
(115.32mm)		 -2.11"
(-53.60mm)		 4th Driest
Driest since:
 1977
124th Wettest
Wettest since:
 1909
Sep 1900–Jan 1901
5-Month 		3.68"
(93.47mm)		 5.96"
(151.38mm)		 -2.28"
(-57.91mm)		 4th Driest
Driest since:
 1904
124th Wettest
Wettest since:
 1942
Aug 1900–Jan 1901
6-Month 		4.41"
(112.01mm)		 7.98"
(202.69mm)		 -3.57"
(-90.68mm)		 1st Driest
Driest since:
 1901
127th Wettest
Wettest since:
 1942
Jul 1900–Jan 1901
7-Month 		5.42"
(137.67mm)		 10.08"
(256.03mm)		 -4.66"
(-118.36mm)		 1st Driest
Driest since:
 1901
127th Wettest
Wettest since:
 2007
Jun 1900–Jan 1901
8-Month 		6.85"
(173.99mm)		 11.62"
(295.15mm)		 -4.77"
(-121.16mm)		 1st Driest
Driest since:
 1901, 1981
127th Wettest
Wettest since:
 1942
Ties: 1981
May 1900–Jan 1901
9-Month 		8.19"
(208.03mm)		 13.64"
(346.46mm)		 -5.45"
(-138.43mm)		 1st Driest
Driest since:
 1901
127th Wettest
Wettest since:
 1942
Apr 1900–Jan 1901
10-Month 		13.64"
(346.46mm)		 15.52"
(394.21mm)		 -1.88"
(-47.75mm)		 33rd Driest
Driest since:
 1940
95th Wettest
Wettest since:
 1942
Mar 1900–Jan 1901
11-Month 		14.14"
(359.16mm)		 17.02"
(432.31mm)		 -2.88"
(-73.15mm)		 19th Driest
Driest since:
 2021
109th Wettest
Wettest since:
 1942
Feb 1900–Jan 1901
12-Month 		15.21"
(386.33mm)		 18.10"
(459.74mm)		 -2.89"
(-73.41mm)		 19th Driest
Driest since:
 2003
109th Wettest
Wettest since:
 1942
Aug 1899–Jan 1901
18-Month 		22.32"
(566.93mm)		 26.08"
(662.43mm)		 -3.76"
(-95.50mm)		 18th Driest
Driest since:
 2003
109th Wettest
Wettest since:
 1942
Feb 1899–Jan 1901
24-Month 		31.01"
(787.65mm)		 36.16"
(918.46mm)		 -5.15"
(-130.81mm)		 18th Driest
Driest since:
 2003
109th Wettest
Wettest since:
 1943
Feb 1898–Jan 1901
36-Month 		48.07"
(1,220.98mm)		 54.20"
(1,376.68mm)		 -6.13"
(-155.70mm)		 17th Driest
Driest since:
 1977
109th Wettest
Wettest since:
 1943
Feb 1897–Jan 1901
48-Month 		69.38"
(1,762.25mm)		 72.24"
(1,834.90mm)		 -2.86"
(-72.65mm)		 40th Driest
Driest since:
 1957
85th Wettest
Wettest since:
 1987
Feb 1896–Jan 1901
60-Month 		85.54"
(2,172.72mm)		 90.25"
(2,292.35mm)		 -4.71"
(-119.63mm)		 35th Driest
Driest since:
 1957
89th Wettest
Wettest since:
 2000

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