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 2011

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 2011
1-Month
2.10"
(53.34mm)
1.84"
(46.74mm)
0.26"
(6.60mm)
92nd Driest
Driest since:
2002
37th Wettest
Wettest since:
1900
Mar–Apr 2011
2-Month
3.26"
(82.80mm)
3.35"
(85.09mm)
-0.09"
(-2.29mm)
66th Driest
Driest since:
2002
63rd Wettest
Wettest since:
1906
Feb–Apr 2011
3-Month
4.43"
(112.52mm)
4.44"
(112.78mm)
-0.01"
(-0.26mm)
77th Driest
Driest since:
2002
52nd Wettest
Wettest since:
1905
Ties: 1929, 1933, 2005
Jan–Apr 2011
4-Month
5.14"
(130.56mm)
5.51"
(139.95mm)
-0.37"
(-9.39mm)
56th Driest
Driest since:
2002
73rd Wettest
Wettest since:
1905
Dec 2010–Apr 2011
5-Month
6.79"
(172.47mm)
6.58"
(167.13mm)
0.21"
(5.34mm)
76th Driest
Driest since:
2002
52nd Wettest
Wettest since:
1905
Nov 2010–Apr 2011
6-Month
7.74"
(196.60mm)
7.65"
(194.31mm)
0.09"
(2.29mm)
71st Driest
Driest since:
1904
57th Wettest
Wettest since:
1984
Oct 2010–Apr 2011
7-Month
9.15"
(232.41mm)
8.98"
(228.09mm)
0.17"
(4.32mm)
70th Driest
Driest since:
2002
58th Wettest
Wettest since:
1942
Sep 2010–Apr 2011
8-Month
9.88"
(250.95mm)
10.41"
(264.41mm)
-0.53"
(-13.46mm)
52nd Driest
Driest since:
1902, 2002
76th Wettest
Wettest since:
1942
Aug 2010–Apr 2011
9-Month
12.22"
(310.39mm)
12.42"
(315.47mm)
-0.20"
(-5.08mm)
62nd Driest
Driest since:
2002
66th Wettest
Wettest since:
1942
Jul 2010–Apr 2011
10-Month
14.68"
(372.87mm)
14.52"
(368.81mm)
0.16"
(4.06mm)
65th Driest
Driest since:
1902
63rd Wettest
Wettest since:
1942
Jun 2010–Apr 2011
11-Month
16.03"
(407.16mm)
16.07"
(408.18mm)
-0.04"
(-1.02mm)
66th Driest
Driest since:
1981
62nd Wettest
Wettest since:
1942
May 2010–Apr 2011
12-Month
17.37"
(441.20mm)
18.08"
(459.23mm)
-0.71"
(-18.03mm)
49th Driest
Driest since:
2013
79th Wettest
Wettest since:
1942
Nov 2009–Apr 2011
18-Month
25.24"
(641.10mm)
25.76"
(654.30mm)
-0.52"
(-13.20mm)
55th Driest
Driest since:
2013
72nd Wettest
Wettest since:
1942
May 2009–Apr 2011
24-Month
36.87"
(936.50mm)
36.16"
(918.46mm)
0.71"
(18.04mm)
78th Driest
Driest since:
1902
49th Wettest
Wettest since:
1942
Ties: 1928
May 2008–Apr 2011
36-Month
54.39"
(1,381.51mm)
54.22"
(1,377.19mm)
0.17"
(4.32mm)
64th Driest
Driest since:
1955
62nd Wettest
Wettest since:
1985
May 2007–Apr 2011
48-Month
73.16"
(1,858.26mm)
72.24"
(1,834.90mm)
0.92"
(23.36mm)
70th Driest
Driest since:
1904
55th Wettest
Wettest since:
1986
May 2006–Apr 2011
60-Month
93.00"
(2,362.20mm)
90.24"
(2,292.10mm)
2.76"
(70.10mm)
87th Driest
Driest since:
1957
37th Wettest
Wettest since:
1987

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