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 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
April 2021
1-Month
1.01"
(25.65mm)
1.84"
(46.74mm)
-0.83"
(-21.09mm)
19th Driest
Driest since:
2002
110th Wettest
Wettest since:
1900
Mar–Apr 2021
2-Month
3.08"
(78.23mm)
3.35"
(85.09mm)
-0.27"
(-6.86mm)
57th Driest
Driest since:
2002
72nd Wettest
Wettest since:
1906
Feb–Apr 2021
3-Month
4.19"
(106.43mm)
4.44"
(112.78mm)
-0.25"
(-6.35mm)
59th Driest
Driest since:
2002
70th Wettest
Wettest since:
1905
Ties: 1953
Jan–Apr 2021
4-Month
4.93"
(125.22mm)
5.51"
(139.95mm)
-0.58"
(-14.73mm)
45th Driest
Driest since:
2002
84th Wettest
Wettest since:
1905
Dec 2020–Apr 2021
5-Month
5.89"
(149.61mm)
6.58"
(167.13mm)
-0.69"
(-17.52mm)
42nd Driest
Driest since:
2002
86th Wettest
Wettest since:
1905
Ties: 1929, 1943, 1994
Nov 2020–Apr 2021
6-Month
6.74"
(171.20mm)
7.65"
(194.31mm)
-0.91"
(-23.11mm)
37th Driest
Driest since:
1904
91st Wettest
Wettest since:
1984
Oct 2020–Apr 2021
7-Month
7.36"
(186.94mm)
8.98"
(228.09mm)
-1.62"
(-41.15mm)
30th Driest
Driest since:
2002
98th Wettest
Wettest since:
1942
Sep 2020–Apr 2021
8-Month
8.33"
(211.58mm)
10.41"
(264.41mm)
-2.08"
(-52.83mm)
15th Driest
Driest since:
1902, 2002
113th Wettest
Wettest since:
1942
Ties: 2022
Aug 2020–Apr 2021
9-Month
9.13"
(231.90mm)
12.42"
(315.47mm)
-3.29"
(-83.57mm)
6th Driest
Driest since:
2002
122nd Wettest
Wettest since:
1942
Jul 2020–Apr 2021
10-Month
10.98"
(278.89mm)
14.52"
(368.81mm)
-3.54"
(-89.92mm)
8th Driest
Driest since:
1902
120th Wettest
Wettest since:
1942
Jun 2020–Apr 2021
11-Month
12.13"
(308.10mm)
16.07"
(408.18mm)
-3.94"
(-100.08mm)
8th Driest
Driest since:
1981
120th Wettest
Wettest since:
1942
May 2020–Apr 2021
12-Month
13.20"
(335.28mm)
18.08"
(459.23mm)
-4.88"
(-123.95mm)
4th Driest
Driest since:
2013
124th Wettest
Wettest since:
1942
Nov 2019–Apr 2021
18-Month
19.54"
(496.32mm)
25.76"
(654.30mm)
-6.22"
(-157.98mm)
3rd Driest
Driest since:
2013
124th Wettest
Wettest since:
1942
May 2019–Apr 2021
24-Month
28.89"
(733.81mm)
36.16"
(918.46mm)
-7.27"
(-184.65mm)
2nd Driest
Driest since:
1902
125th Wettest
Wettest since:
1942
May 2018–Apr 2021
36-Month
46.82"
(1,189.23mm)
54.22"
(1,377.19mm)
-7.40"
(-187.96mm)
15th Driest
Driest since:
1955
111th Wettest
Wettest since:
1985
May 2017–Apr 2021
48-Month
63.29"
(1,607.57mm)
72.24"
(1,834.90mm)
-8.95"
(-227.33mm)
10th Driest
Driest since:
1904
115th Wettest
Wettest since:
1986
May 2016–Apr 2021
60-Month
81.13"
(2,060.70mm)
90.24"
(2,292.10mm)
-9.11"
(-231.40mm)
13th Driest
Driest since:
1957
111th Wettest
Wettest since:
1987

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