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, September 2005

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 2005
1-Month		1.35"
(34.29mm)		1.43"
(36.32mm)		-0.08"
(-2.03mm)		69th Driest
Driest since:
1956
60th Wettest
Wettest since:
2013
Ties: 1958, 2000
Aug–Sep 2005
2-Month		3.58"
(90.93mm)		3.46"
(87.88mm)		0.12"
(3.05mm)		82nd Driest
Driest since:
1944
47th Wettest
Wettest since:
2013
Ties: 1896, 1992
Jul–Sep 2005
3-Month		4.63"
(117.60mm)		5.56"
(141.22mm)		-0.93"
(-23.62mm)		29th Driest
Driest since:
1900
100th Wettest
Wettest since:
2013
Ties: 2012
Jun–Sep 2005
4-Month		6.83"
(173.48mm)		7.10"
(180.34mm)		-0.27"
(-6.86mm)		63rd Driest
Driest since:
1924
66th Wettest
Wettest since:
1965
Ties: 1972
May–Sep 2005
5-Month		8.32"
(211.33mm)		9.12"
(231.65mm)		-0.80"
(-20.32mm)		43rd Driest
Driest since:
1939
86th Wettest
Wettest since:
1965
Ties: 1896
Apr–Sep 2005
6-Month		10.29"
(261.37mm)		10.96"
(278.38mm)		-0.67"
(-17.01mm)		49th Driest
Driest since:
1939
80th Wettest
Wettest since:
1999
Ties: 1940
Mar–Sep 2005
7-Month		11.69"
(296.93mm)		12.47"
(316.74mm)		-0.78"
(-19.81mm)		46th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Feb–Sep 2005
8-Month		12.75"
(323.85mm)		13.56"
(344.42mm)		-0.81"
(-20.57mm)		49th Driest
Driest since:
2002
80th Wettest
Wettest since:
1941
Jan–Sep 2005
9-Month		14.72"
(373.89mm)		14.62"
(371.35mm)		0.10"
(2.54mm)		72nd Driest
Driest since:
2002
57th Wettest
Wettest since:
1957
Dec 2004–Sep 2005
10-Month		15.49"
(393.45mm)		15.70"
(398.78mm)		-0.21"
(-5.33mm)		66th Driest
Driest since:
2002
62nd Wettest
Wettest since:
1957
Ties: 1904, 2016
Nov 2004–Sep 2005
11-Month		17.18"
(436.37mm)		16.76"
(425.70mm)		0.42"
(10.67mm)		82nd Driest
Driest since:
2002
46th Wettest
Wettest since:
1941
Ties: 1903, 2016, 2019
Oct 2004–Sep 2005
12-Month		18.65"
(473.71mm)		18.10"
(459.74mm)		0.55"
(13.97mm)		77th Driest
Driest since:
2002
51st Wettest
Wettest since:
1995
Apr 2004–Sep 2005
18-Month		30.87"
(784.10mm)		29.08"
(738.63mm)		1.79"
(45.47mm)		93rd Driest
Driest since:
2002
35th Wettest
Wettest since:
1942
Oct 2003–Sep 2005
24-Month		36.27"
(921.26mm)		36.22"
(919.99mm)		0.05"
(1.27mm)		63rd Driest
Driest since:
2003
64th Wettest
Wettest since:
1942
Oct 2002–Sep 2005
36-Month		53.33"
(1,354.58mm)		54.27"
(1,378.46mm)		-0.94"
(-23.88mm)		56th Driest
Driest since:
1956
70th Wettest
Wettest since:
1997
Oct 2001–Sep 2005
48-Month		64.44"
(1,636.78mm)		72.31"
(1,836.67mm)		-7.87"
(-199.89mm)		12th Driest
Driest since:
1956
113th Wettest
Wettest since:
1998
Oct 2000–Sep 2005
60-Month		82.16"
(2,086.86mm)		90.33"
(2,294.38mm)		-8.17"
(-207.52mm)		16th Driest
Driest since:
2022
108th Wettest
Wettest since:
1999

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