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 1987

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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
January 1987
1-Month 		1.11"
(28.19mm)		 1.06"
(26.92mm)		 0.05"
(1.27mm)		 83rd Driest
Driest since:
 1919, 1931
46th Wettest
Wettest since:
 1916
Ties: 1945
Dec 1986–Jan 1987
2-Month 		1.70"
(43.18mm)		 2.13"
(54.10mm)		 -0.43"
(-10.92mm)		 34th Driest
Driest since:
 1931
94th Wettest
Wettest since:
 1914
Ties: 1999, 2021
Nov 1986–Jan 1987
3-Month 		3.48"
(88.39mm)		 3.20"
(81.28mm)		 0.28"
(7.11mm)		 92nd Driest
Driest since:
 1904
36th Wettest
Wettest since:
 1979
Oct 1986–Jan 1987
4-Month 		5.60"
(142.24mm)		 4.54"
(115.32mm)		 1.06"
(26.92mm)		 109th Driest
Driest since:
 1977
19th Wettest
Wettest since:
 1909
Sep 1986–Jan 1987
5-Month 		7.66"
(194.56mm)		 5.96"
(151.38mm)		 1.70"
(43.18mm)		 113th Driest
Driest since:
 1904
15th Wettest
Wettest since:
 1942
Aug 1986–Jan 1987
6-Month 		9.79"
(248.67mm)		 7.98"
(202.69mm)		 1.81"
(45.98mm)		 111th Driest
Driest since:
 1901
17th Wettest
Wettest since:
 1942
Jul 1986–Jan 1987
7-Month 		12.12"
(307.85mm)		 10.08"
(256.03mm)		 2.04"
(51.82mm)		 114th Driest
Driest since:
 1901
14th Wettest
Wettest since:
 2007
Jun 1986–Jan 1987
8-Month 		14.20"
(360.68mm)		 11.62"
(295.15mm)		 2.58"
(65.53mm)		 118th Driest
Driest since:
 1901, 1981
10th Wettest
Wettest since:
 1942
May 1986–Jan 1987
9-Month 		15.70"
(398.78mm)		 13.64"
(346.46mm)		 2.06"
(52.32mm)		 110th Driest
Driest since:
 1901
18th Wettest
Wettest since:
 1942
Apr 1986–Jan 1987
10-Month 		18.04"
(458.22mm)		 15.52"
(394.21mm)		 2.52"
(64.01mm)		 113th Driest
Driest since:
 1940
15th Wettest
Wettest since:
 1942
Mar 1986–Jan 1987
11-Month 		19.06"
(484.12mm)		 17.02"
(432.31mm)		 2.04"
(51.81mm)		 106th Driest
Driest since:
 2021
22nd Wettest
Wettest since:
 1942
Feb 1986–Jan 1987
12-Month 		20.60"
(523.24mm)		 18.10"
(459.74mm)		 2.50"
(63.50mm)		 108th Driest
Driest since:
 2003
20th Wettest
Wettest since:
 1942
Aug 1985–Jan 1987
18-Month 		29.08"
(738.63mm)		 26.08"
(662.43mm)		 3.00"
(76.20mm)		 108th Driest
Driest since:
 2003
19th Wettest
Wettest since:
 1942
Feb 1985–Jan 1987
24-Month 		40.45"
(1,027.43mm)		 36.16"
(918.46mm)		 4.29"
(108.97mm)		 114th Driest
Driest since:
 2003
13th Wettest
Wettest since:
 1943
Ties: 2017
Feb 1984–Jan 1987
36-Month 		61.38"
(1,559.05mm)		 54.20"
(1,376.68mm)		 7.18"
(182.37mm)		 120th Driest
Driest since:
 1977
6th Wettest
Wettest since:
 1943
Feb 1983–Jan 1987
48-Month 		83.35"
(2,117.09mm)		 72.24"
(1,834.90mm)		 11.11"
(282.19mm)		 124th Driest
Driest since:
 1957
1st Wettest
Wettest to Date
 1987
Feb 1982–Jan 1987
60-Month 		102.44"
(2,601.98mm)		 90.25"
(2,292.35mm)		 12.19"
(309.63mm)		 121st Driest
Driest since:
 1957
3rd Wettest
Wettest to Date
 2000

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