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 1902

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1902
1-Month 		2.53"
(64.26mm)		 2.02"
(51.31mm)		 0.51"
(12.95mm)		 96th Driest
Driest since:
 1974
33rd Wettest
Wettest since:
 2015
Ties: 1905
Apr–May 1902
2-Month 		3.29"
(83.57mm)		 3.86"
(98.04mm)		 -0.57"
(-14.47mm)		 45th Driest
Driest since:
 2002
84th Wettest
Wettest since:
 1957
Mar–May 1902
3-Month 		4.55"
(115.57mm)		 5.37"
(136.40mm)		 -0.82"
(-20.83mm)		 38th Driest
Driest since:
 2002
91st Wettest
Wettest since:
 1957
Feb–May 1902
4-Month 		5.27"
(133.86mm)		 6.46"
(164.08mm)		 -1.19"
(-30.22mm)		 25th Driest
Driest since:
 2002
104th Wettest
Wettest since:
 1905
Jan–May 1902
5-Month 		5.90"
(149.86mm)		 7.52"
(191.01mm)		 -1.62"
(-41.15mm)		 21st Driest
Driest since:
 2002
108th Wettest
Wettest since:
 1957
Dec 1901–May 1902
6-Month 		7.11"
(180.59mm)		 8.60"
(218.44mm)		 -1.49"
(-37.85mm)		 23rd Driest
Driest since:
 2002
105th Wettest
Wettest since:
 1957
Nov 1901–May 1902
7-Month 		7.39"
(187.71mm)		 9.66"
(245.36mm)		 -2.27"
(-57.65mm)		 15th Driest
Driest since:
 2002
113th Wettest
Wettest since:
 1957
Oct 1901–May 1902
8-Month 		8.02"
(203.71mm)		 11.00"
(279.40mm)		 -2.98"
(-75.69mm)		 7th Driest
Driest since:
 2002
121st Wettest
Wettest since:
 1995
Sep 1901–May 1902
9-Month 		8.63"
(219.20mm)		 12.43"
(315.72mm)		 -3.80"
(-96.52mm)		 3rd Driest
Driest since:
 2002
125th Wettest
Wettest since:
 1942
Aug 1901–May 1902
10-Month 		11.14"
(282.96mm)		 14.44"
(366.78mm)		 -3.30"
(-83.82mm)		 9th Driest
Driest since:
 2002
119th Wettest
Wettest since:
 1942
Jul 1901–May 1902
11-Month 		12.25"
(311.15mm)		 16.54"
(420.12mm)		 -4.29"
(-108.97mm)		 6th Driest
Driest since:
 2002
122nd Wettest
Wettest since:
 1942
Jun 1901–May 1902
12-Month 		13.67"
(347.22mm)		 18.08"
(459.23mm)		 -4.41"
(-112.01mm)		 5th Driest
Driest since:
 2002
123rd Wettest
Wettest since:
 1942
Dec 1900–May 1902
18-Month 		22.07"
(560.58mm)		 26.70"
(678.18mm)		 -4.63"
(-117.60mm)		 11th Driest
Driest since:
 2013
116th Wettest
Wettest since:
 1942
Jun 1900–May 1902
24-Month 		27.75"
(704.85mm)		 36.18"
(918.97mm)		 -8.43"
(-214.12mm)		 1st Driest
Driest since:
 1902
126th Wettest
Wettest since:
 1942
Jun 1899–May 1902
36-Month 		47.23"
(1,199.64mm)		 54.21"
(1,376.93mm)		 -6.98"
(-177.29mm)		 12th Driest
Driest since:
 2022
114th Wettest
Wettest since:
 1943
Jun 1898–May 1902
48-Month 		62.38"
(1,584.45mm)		 72.23"
(1,834.64mm)		 -9.85"
(-250.19mm)		 5th Driest
Driest since:
 1956
120th Wettest
Wettest since:
 1944
Jun 1897–May 1902
60-Month 		82.34"
(2,091.44mm)		 90.24"
(2,292.10mm)		 -7.90"
(-200.66mm)		 17th Driest
Driest since:
 2022
107th Wettest
Wettest since:
 1987

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