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, May 2012

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
May 2012
1-Month
0.91"
(23.11mm)
2.02"
(51.31mm)
-1.11"
(-28.20mm)
8th Driest
Driest since:
1974
121st Wettest
Wettest since:
2015
Ties: 1911, 1918, 1932, 2006
Apr–May 2012
2-Month
2.29"
(58.17mm)
3.86"
(98.04mm)
-1.57"
(-39.87mm)
12th Driest
Driest since:
2002
117th Wettest
Wettest since:
1957
Ties: 1896, 1927, 1954
Mar–May 2012
3-Month
2.74"
(69.60mm)
5.37"
(136.40mm)
-2.63"
(-66.80mm)
4th Driest
Driest since:
2002
125th Wettest
Wettest since:
1957
Feb–May 2012
4-Month
4.10"
(104.14mm)
6.46"
(164.08mm)
-2.36"
(-59.94mm)
8th Driest
Driest since:
2002
121st Wettest
Wettest since:
1905
Jan–May 2012
5-Month
4.79"
(121.67mm)
7.52"
(191.01mm)
-2.73"
(-69.34mm)
6th Driest
Driest since:
2002
123rd Wettest
Wettest since:
1957
Dec 2011–May 2012
6-Month
5.70"
(144.78mm)
8.60"
(218.44mm)
-2.90"
(-73.66mm)
4th Driest
Driest since:
2002
124th Wettest
Wettest since:
1957
Nov 2011–May 2012
7-Month
6.69"
(169.93mm)
9.66"
(245.36mm)
-2.97"
(-75.43mm)
7th Driest
Driest since:
2002
121st Wettest
Wettest since:
1957
Oct 2011–May 2012
8-Month
8.35"
(212.09mm)
11.00"
(279.40mm)
-2.65"
(-67.31mm)
11th Driest
Driest since:
2002
117th Wettest
Wettest since:
1995
Ties: 1936
Sep 2011–May 2012
9-Month
9.62"
(244.35mm)
12.43"
(315.72mm)
-2.81"
(-71.37mm)
11th Driest
Driest since:
2002
117th Wettest
Wettest since:
1942
Aug 2011–May 2012
10-Month
11.22"
(284.99mm)
14.44"
(366.78mm)
-3.22"
(-81.79mm)
12th Driest
Driest since:
2002
116th Wettest
Wettest since:
1942
Jul 2011–May 2012
11-Month
13.76"
(349.50mm)
16.54"
(420.12mm)
-2.78"
(-70.62mm)
21st Driest
Driest since:
2002
107th Wettest
Wettest since:
1942
Jun 2011–May 2012
12-Month
14.70"
(373.38mm)
18.08"
(459.23mm)
-3.38"
(-85.85mm)
16th Driest
Driest since:
2002
112th Wettest
Wettest since:
1942
Dec 2010–May 2012
18-Month
24.06"
(611.12mm)
26.70"
(678.18mm)
-2.64"
(-67.06mm)
29th Driest
Driest since:
2013
98th Wettest
Wettest since:
1942
Jun 2010–May 2012
24-Month
33.30"
(845.82mm)
36.18"
(918.97mm)
-2.88"
(-73.15mm)
31st Driest
Driest since:
1902
96th Wettest
Wettest since:
1942
Jun 2009–May 2012
36-Month
52.20"
(1,325.88mm)
54.21"
(1,376.93mm)
-2.01"
(-51.05mm)
44th Driest
Driest since:
2022
82nd Wettest
Wettest since:
1943
Jun 2008–May 2012
48-Month
70.11"
(1,780.79mm)
72.23"
(1,834.64mm)
-2.12"
(-53.85mm)
44th Driest
Driest since:
1956
81st Wettest
Wettest since:
1944
Jun 2007–May 2012
60-Month
88.34"
(2,243.84mm)
90.24"
(2,292.10mm)
-1.90"
(-48.26mm)
47th Driest
Driest since:
2022
77th Wettest
Wettest since:
1987

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