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 2013

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 2013
1-Month 		3.88"
(98.55mm)		 1.43"
(36.32mm)		 2.45"
(62.23mm)		 128th Driest
Driest since:
 1956
1st Wettest
Wettest to Date
 2013
Aug–Sep 2013
2-Month 		6.12"
(155.45mm)		 3.46"
(87.88mm)		 2.66"
(67.57mm)		 128th Driest
Driest since:
 1944
1st Wettest
Wettest to Date
 2013
Jul–Sep 2013
3-Month 		8.56"
(217.42mm)		 5.56"
(141.22mm)		 3.00"
(76.20mm)		 128th Driest
Driest since:
 1900
1st Wettest
Wettest to Date
 2013
Jun–Sep 2013
4-Month 		9.22"
(234.19mm)		 7.10"
(180.34mm)		 2.12"
(53.85mm)		 122nd Driest
Driest since:
 1924
7th Wettest
Wettest since:
 1965
May–Sep 2013
5-Month 		10.77"
(273.56mm)		 9.12"
(231.65mm)		 1.65"
(41.91mm)		 108th Driest
Driest since:
 1939
21st Wettest
Wettest since:
 1965
Ties: 2014
Apr–Sep 2013
6-Month 		12.44"
(315.98mm)		 10.96"
(278.38mm)		 1.48"
(37.60mm)		 105th Driest
Driest since:
 1939
24th Wettest
Wettest since:
 1999
Ties: 1986
Mar–Sep 2013
7-Month 		13.51"
(343.15mm)		 12.47"
(316.74mm)		 1.04"
(26.41mm)		 93rd Driest
Driest since:
 2002
36th Wettest
Wettest since:
 1941
Feb–Sep 2013
8-Month 		14.40"
(365.76mm)		 13.56"
(344.42mm)		 0.84"
(21.34mm)		 92nd Driest
Driest since:
 2002
37th Wettest
Wettest since:
 1941
Jan–Sep 2013
9-Month 		15.31"
(388.87mm)		 14.62"
(371.35mm)		 0.69"
(17.52mm)		 85th Driest
Driest since:
 2002
44th Wettest
Wettest since:
 1957
Dec 2012–Sep 2013
10-Month 		16.62"
(422.15mm)		 15.70"
(398.78mm)		 0.92"
(23.37mm)		 92nd Driest
Driest since:
 2002
36th Wettest
Wettest since:
 1957
Nov 2012–Sep 2013
11-Month 		17.06"
(433.32mm)		 16.76"
(425.70mm)		 0.30"
(7.62mm)		 74th Driest
Driest since:
 2002
54th Wettest
Wettest since:
 1941
Oct 2012–Sep 2013
12-Month 		17.78"
(451.61mm)		 18.10"
(459.74mm)		 -0.32"
(-8.13mm)		 64th Driest
Driest since:
 2002
64th Wettest
Wettest since:
 1995
Apr 2012–Sep 2013
18-Month 		25.12"
(638.05mm)		 29.08"
(738.63mm)		 -3.96"
(-100.58mm)		 18th Driest
Driest since:
 2002
110th Wettest
Wettest since:
 1942
Oct 2011–Sep 2013
24-Month 		31.18"
(791.97mm)		 36.22"
(919.99mm)		 -5.04"
(-128.02mm)		 15th Driest
Driest since:
 2003
112th Wettest
Wettest since:
 1942
Oct 2010–Sep 2013
36-Month 		49.25"
(1,250.95mm)		 54.27"
(1,378.46mm)		 -5.02"
(-127.51mm)		 21st Driest
Driest since:
 1956
105th Wettest
Wettest since:
 1997
Oct 2009–Sep 2013
48-Month 		67.44"
(1,712.98mm)		 72.31"
(1,836.67mm)		 -4.87"
(-123.69mm)		 27th Driest
Driest since:
 1956
98th Wettest
Wettest since:
 1998
Oct 2008–Sep 2013
60-Month 		86.24"
(2,190.50mm)		 90.33"
(2,294.38mm)		 -4.09"
(-103.88mm)		 36th Driest
Driest since:
 2022
88th Wettest
Wettest since:
 1999

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