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, January 1940

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
January 1940
1-Month
1.80"
(45.72mm)
1.06"
(26.92mm)
0.74"
(18.80mm)
115th Driest
Driest since:
1919, 1931
14th Wettest
Wettest since:
1916
Dec 1939–Jan 1940
2-Month
2.42"
(61.47mm)
2.13"
(54.10mm)
0.29"
(7.37mm)
89th Driest
Driest since:
1931
39th Wettest
Wettest since:
1914
Nov 1939–Jan 1940
3-Month
2.73"
(69.34mm)
3.20"
(81.28mm)
-0.47"
(-11.94mm)
36th Driest
Driest since:
1904
92nd Wettest
Wettest since:
1979
Ties: 1994
Oct 1939–Jan 1940
4-Month
3.39"
(86.11mm)
4.54"
(115.32mm)
-1.15"
(-29.21mm)
23rd Driest
Driest since:
1977
105th Wettest
Wettest since:
1909
Sep 1939–Jan 1940
5-Month
4.77"
(121.16mm)
5.96"
(151.38mm)
-1.19"
(-30.22mm)
24th Driest
Driest since:
1904
104th Wettest
Wettest since:
1942
Aug 1939–Jan 1940
6-Month
5.88"
(149.35mm)
7.98"
(202.69mm)
-2.10"
(-53.34mm)
13th Driest
Driest since:
1901
115th Wettest
Wettest since:
1942
Jul 1939–Jan 1940
7-Month
6.91"
(175.51mm)
10.07"
(255.78mm)
-3.16"
(-80.27mm)
5th Driest
Driest since:
1901
123rd Wettest
Wettest since:
2007
Jun 1939–Jan 1940
8-Month
7.78"
(197.61mm)
11.62"
(295.15mm)
-3.84"
(-97.54mm)
3rd Driest
Driest since:
1901, 1981
125th Wettest
Wettest since:
1942
May 1939–Jan 1940
9-Month
8.80"
(223.52mm)
13.64"
(346.46mm)
-4.84"
(-122.94mm)
2nd Driest
Driest since:
1901
126th Wettest
Wettest since:
1942
Apr 1939–Jan 1940
10-Month
9.78"
(248.41mm)
15.52"
(394.21mm)
-5.74"
(-145.80mm)
1st Driest
Driest since:
1940
127th Wettest
Wettest since:
1942
Mar 1939–Jan 1940
11-Month
11.19"
(284.23mm)
17.02"
(432.31mm)
-5.83"
(-148.08mm)
4th Driest
Driest since:
2021
124th Wettest
Wettest since:
1942
Feb 1939–Jan 1940
12-Month
12.53"
(318.26mm)
18.10"
(459.74mm)
-5.57"
(-141.48mm)
3rd Driest
Driest since:
2003
125th Wettest
Wettest since:
1942
Ties: 2013
Aug 1938–Jan 1940
18-Month
22.13"
(562.10mm)
26.08"
(662.43mm)
-3.95"
(-100.33mm)
14th Driest
Driest since:
2003
113th Wettest
Wettest since:
1942
Feb 1938–Jan 1940
24-Month
34.31"
(871.47mm)
36.16"
(918.46mm)
-1.85"
(-46.99mm)
43rd Driest
Driest since:
2003
84th Wettest
Wettest since:
1943
Feb 1937–Jan 1940
36-Month
50.80"
(1,290.32mm)
54.20"
(1,376.68mm)
-3.40"
(-86.36mm)
36th Driest
Driest since:
1977
90th Wettest
Wettest since:
1943
Feb 1936–Jan 1940
48-Month
67.89"
(1,724.41mm)
72.24"
(1,834.90mm)
-4.35"
(-110.49mm)
31st Driest
Driest since:
1957
94th Wettest
Wettest since:
1987
Feb 1935–Jan 1940
60-Month
85.30"
(2,166.62mm)
90.25"
(2,292.35mm)
-4.95"
(-125.73mm)
32nd Driest
Driest since:
1957
92nd Wettest
Wettest since:
2000
Ties: 1959, 1975

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