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 2021

View Period (Months):
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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 2021
1-Month
0.74"
(18.80mm)
1.06"
(26.92mm)
-0.32"
(-8.12mm)
38th Driest
Driest since:
1919, 1931
91st Wettest
Wettest since:
1916
Dec 2020–Jan 2021
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: 1987, 1999
Nov 2020–Jan 2021
3-Month
2.55"
(64.77mm)
3.20"
(81.28mm)
-0.65"
(-16.51mm)
27th Driest
Driest since:
1904
101st Wettest
Wettest since:
1979
Ties: 1912, 1928
Oct 2020–Jan 2021
4-Month
3.17"
(80.52mm)
4.54"
(115.32mm)
-1.37"
(-34.80mm)
15th Driest
Driest since:
1977
113th Wettest
Wettest since:
1909
Sep 2020–Jan 2021
5-Month
4.14"
(105.16mm)
5.96"
(151.38mm)
-1.82"
(-46.22mm)
8th Driest
Driest since:
1904
120th Wettest
Wettest since:
1942
Aug 2020–Jan 2021
6-Month
4.94"
(125.48mm)
7.98"
(202.69mm)
-3.04"
(-77.21mm)
4th Driest
Driest since:
1901
124th Wettest
Wettest since:
1942
Jul 2020–Jan 2021
7-Month
6.79"
(172.47mm)
10.07"
(255.78mm)
-3.28"
(-83.31mm)
4th Driest
Driest since:
1901
124th Wettest
Wettest since:
2007
Jun 2020–Jan 2021
8-Month
7.94"
(201.68mm)
11.62"
(295.15mm)
-3.68"
(-93.47mm)
4th Driest
Driest since:
1901, 1981
124th Wettest
Wettest since:
1942
May 2020–Jan 2021
9-Month
9.01"
(228.85mm)
13.64"
(346.46mm)
-4.63"
(-117.61mm)
3rd Driest
Driest since:
1901
125th Wettest
Wettest since:
1942
Apr 2020–Jan 2021
10-Month
9.81"
(249.17mm)
15.52"
(394.21mm)
-5.71"
(-145.04mm)
2nd Driest
Driest since:
1940
126th Wettest
Wettest since:
1942
Mar 2020–Jan 2021
11-Month
11.16"
(283.46mm)
17.02"
(432.31mm)
-5.86"
(-148.85mm)
1st Driest
Driest since:
2021
127th Wettest
Wettest since:
1942
Feb 2020–Jan 2021
12-Month
12.25"
(311.15mm)
18.10"
(459.74mm)
-5.85"
(-148.59mm)
2nd Driest
Driest since:
2003
126th Wettest
Wettest since:
1942
Aug 2019–Jan 2021
18-Month
18.50"
(469.90mm)
26.08"
(662.43mm)
-7.58"
(-192.53mm)
2nd Driest
Driest since:
2003
125th Wettest
Wettest since:
1942
Feb 2019–Jan 2021
24-Month
30.50"
(774.70mm)
36.16"
(918.46mm)
-5.66"
(-143.76mm)
11th Driest
Driest since:
2003
116th Wettest
Wettest since:
1943
Feb 2018–Jan 2021
36-Month
46.03"
(1,169.16mm)
54.20"
(1,376.68mm)
-8.17"
(-207.52mm)
8th Driest
Driest since:
1977
118th Wettest
Wettest since:
1943
Feb 2017–Jan 2021
48-Month
63.46"
(1,611.88mm)
72.24"
(1,834.90mm)
-8.78"
(-223.02mm)
10th Driest
Driest since:
1957
115th Wettest
Wettest since:
1987
Feb 2016–Jan 2021
60-Month
81.81"
(2,077.97mm)
90.25"
(2,292.35mm)
-8.44"
(-214.38mm)
17th Driest
Driest since:
1957
107th Wettest
Wettest since:
2000

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