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 2003

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 2003
1-Month 		1.44"
(36.58mm)		 1.43"
(36.32mm)		 0.01"
(0.26mm)		 75th Driest
Driest since:
 1956
54th Wettest
Wettest since:
 2013
Ties: 1931
Aug–Sep 2003
2-Month 		3.29"
(83.57mm)		 3.46"
(87.88mm)		 -0.17"
(-4.31mm)		 61st Driest
Driest since:
 1944
68th Wettest
Wettest since:
 2013
Jul–Sep 2003
3-Month 		4.31"
(109.47mm)		 5.56"
(141.22mm)		 -1.25"
(-31.75mm)		 21st Driest
Driest since:
 1900
108th Wettest
Wettest since:
 2013
Jun–Sep 2003
4-Month 		6.38"
(162.05mm)		 7.10"
(180.34mm)		 -0.72"
(-18.29mm)		 41st Driest
Driest since:
 1924
88th Wettest
Wettest since:
 1965
Ties: 1948
May–Sep 2003
5-Month 		8.13"
(206.50mm)		 9.12"
(231.65mm)		 -0.99"
(-25.15mm)		 36th Driest
Driest since:
 1939
93rd Wettest
Wettest since:
 1965
Ties: 2016
Apr–Sep 2003
6-Month 		9.70"
(246.38mm)		 10.96"
(278.38mm)		 -1.26"
(-32.00mm)		 33rd Driest
Driest since:
 1939
96th Wettest
Wettest since:
 1999
Mar–Sep 2003
7-Month 		11.89"
(302.01mm)		 12.47"
(316.74mm)		 -0.58"
(-14.73mm)		 54th Driest
Driest since:
 2002
75th Wettest
Wettest since:
 1941
Ties: 1903
Feb–Sep 2003
8-Month 		13.38"
(339.85mm)		 13.56"
(344.42mm)		 -0.18"
(-4.57mm)		 65th Driest
Driest since:
 2002
64th Wettest
Wettest since:
 1941
Jan–Sep 2003
9-Month 		13.82"
(351.03mm)		 14.62"
(371.35mm)		 -0.80"
(-20.32mm)		 52nd Driest
Driest since:
 2002
77th Wettest
Wettest since:
 1957
Dec 2002–Sep 2003
10-Month 		14.46"
(367.28mm)		 15.70"
(398.78mm)		 -1.24"
(-31.50mm)		 40th Driest
Driest since:
 2002
88th Wettest
Wettest since:
 1957
Nov 2002–Sep 2003
11-Month 		15.44"
(392.18mm)		 16.76"
(425.70mm)		 -1.32"
(-33.52mm)		 43rd Driest
Driest since:
 2002
85th Wettest
Wettest since:
 1941
Oct 2002–Sep 2003
12-Month 		17.06"
(433.32mm)		 18.10"
(459.74mm)		 -1.04"
(-26.42mm)		 48th Driest
Driest since:
 2002
80th Wettest
Wettest since:
 1995
Apr 2002–Sep 2003
18-Month 		23.68"
(601.47mm)		 29.08"
(738.63mm)		 -5.40"
(-137.16mm)		 6th Driest
Driest since:
 2002
122nd Wettest
Wettest since:
 1942
Oct 2001–Sep 2003
24-Month 		28.17"
(715.52mm)		 36.22"
(919.99mm)		 -8.05"
(-204.47mm)		 1st Driest
Driest to Date
 2003
126th Wettest
Wettest since:
 1942
Oct 2000–Sep 2003
36-Month 		45.89"
(1,165.61mm)		 54.27"
(1,378.46mm)		 -8.38"
(-212.85mm)		 7th Driest
Driest since:
 1956
119th Wettest
Wettest since:
 1997
Oct 1999–Sep 2003
48-Month 		61.06"
(1,550.92mm)		 72.31"
(1,836.67mm)		 -11.25"
(-285.75mm)		 2nd Driest
Driest since:
 1956
123rd Wettest
Wettest since:
 1998
Oct 1998–Sep 2003
60-Month 		83.89"
(2,130.81mm)		 90.33"
(2,294.38mm)		 -6.44"
(-163.57mm)		 22nd Driest
Driest since:
 2022
102nd Wettest
Wettest since:
 1999

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