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, July 1939

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
July 1939
1-Month 		1.03"
(26.16mm)		 2.10"
(53.34mm)		 -1.07"
(-27.18mm)		 4th Driest
Driest since:
 1900
125th Wettest
Wettest since:
 1998
Jun–Jul 1939
2-Month 		1.90"
(48.26mm)		 3.65"
(92.71mm)		 -1.75"
(-44.45mm)		 3rd Driest
Driest since:
 1924
126th Wettest
Wettest since:
 1965
May–Jul 1939
3-Month 		2.92"
(74.17mm)		 5.66"
(143.76mm)		 -2.74"
(-69.59mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 2015
Apr–Jul 1939
4-Month 		3.90"
(99.06mm)		 7.50"
(190.50mm)		 -3.60"
(-91.44mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 1957
Mar–Jul 1939
5-Month 		5.31"
(134.87mm)		 9.02"
(229.11mm)		 -3.71"
(-94.24mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 1957
Feb–Jul 1939
6-Month 		6.65"
(168.91mm)		 10.11"
(256.79mm)		 -3.46"
(-87.88mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 1995
Jan–Jul 1939
7-Month 		8.31"
(211.07mm)		 11.17"
(283.72mm)		 -2.86"
(-72.65mm)		 10th Driest
Driest since:
 2002
119th Wettest
Wettest since:
 1957
Dec 1938–Jul 1939
8-Month 		9.50"
(241.30mm)		 12.24"
(310.90mm)		 -2.74"
(-69.60mm)		 11th Driest
Driest since:
 2002
117th Wettest
Wettest since:
 1957
Nov 1938–Jul 1939
9-Month 		10.52"
(267.21mm)		 13.31"
(338.07mm)		 -2.79"
(-70.86mm)		 14th Driest
Driest since:
 2002
114th Wettest
Wettest since:
 1957
Oct 1938–Jul 1939
10-Month 		11.65"
(295.91mm)		 14.64"
(371.86mm)		 -2.99"
(-75.95mm)		 12th Driest
Driest since:
 2002
116th Wettest
Wettest since:
 1995
Sep 1938–Jul 1939
11-Month 		14.64"
(371.86mm)		 16.07"
(408.18mm)		 -1.43"
(-36.32mm)		 42nd Driest
Driest since:
 2002
86th Wettest
Wettest since:
 1995
Aug 1938–Jul 1939
12-Month 		16.25"
(412.75mm)		 18.08"
(459.23mm)		 -1.83"
(-46.48mm)		 35th Driest
Driest since:
 2002
93rd Wettest
Wettest since:
 1995
Feb 1938–Jul 1939
18-Month 		28.43"
(722.12mm)		 28.21"
(716.53mm)		 0.22"
(5.59mm)		 68th Driest
Driest since:
 2002, 2013
60th Wettest
Wettest since:
 1942
Aug 1937–Jul 1939
24-Month 		35.56"
(903.22mm)		 36.18"
(918.97mm)		 -0.62"
(-15.75mm)		 55th Driest
Driest since:
 1902
72nd Wettest
Wettest since:
 1942
Aug 1936–Jul 1939
36-Month 		52.83"
(1,341.88mm)		 54.23"
(1,377.44mm)		 -1.40"
(-35.56mm)		 46th Driest
Driest since:
 1956
80th Wettest
Wettest since:
 1943
Aug 1935–Jul 1939
48-Month 		68.57"
(1,741.68mm)		 72.25"
(1,835.15mm)		 -3.68"
(-93.47mm)		 31st Driest
Driest since:
 1956
94th Wettest
Wettest since:
 1944
Aug 1934–Jul 1939
60-Month 		85.24"
(2,165.10mm)		 90.27"
(2,292.86mm)		 -5.03"
(-127.76mm)		 32nd Driest
Driest since:
 1954
92nd Wettest
Wettest since:
 1999

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