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, October 1917

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1917
1-Month
0.56"
(14.22mm)
1.35"
(34.29mm)
-0.79"
(-20.07mm)
11th Driest
Driest since:
1952
118th Wettest
Wettest since:
1969
Ties: 1900
Sep–Oct 1917
2-Month
2.06"
(52.32mm)
2.77"
(70.36mm)
-0.71"
(-18.04mm)
36th Driest
Driest since:
1922
93rd Wettest
Wettest since:
1941
Ties: 1958, 1988
Aug–Oct 1917
3-Month
3.88"
(98.55mm)
4.80"
(121.92mm)
-0.92"
(-23.37mm)
38th Driest
Driest since:
1944
91st Wettest
Wettest since:
1941
Ties: 1968
Jul–Oct 1917
4-Month
5.42"
(137.67mm)
6.90"
(175.26mm)
-1.48"
(-37.59mm)
25th Driest
Driest since:
1900
104th Wettest
Wettest since:
1941
Ties: 1960
Jun–Oct 1917
5-Month
6.05"
(153.67mm)
8.45"
(214.63mm)
-2.40"
(-60.96mm)
14th Driest
Driest since:
1900
115th Wettest
Wettest since:
1941
May–Oct 1917
6-Month
9.48"
(240.79mm)
10.46"
(265.68mm)
-0.98"
(-24.89mm)
45th Driest
Driest since:
1939
84th Wettest
Wettest since:
1941
Apr–Oct 1917
7-Month
11.79"
(299.47mm)
12.30"
(312.42mm)
-0.51"
(-12.95mm)
56th Driest
Driest since:
1939
73rd Wettest
Wettest since:
1941
Mar–Oct 1917
8-Month
12.91"
(327.91mm)
13.82"
(351.03mm)
-0.91"
(-23.12mm)
53rd Driest
Driest since:
1934
76th Wettest
Wettest since:
1941
Feb–Oct 1917
9-Month
13.69"
(347.73mm)
14.91"
(378.71mm)
-1.22"
(-30.98mm)
46th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Jan–Oct 1917
10-Month
14.76"
(374.90mm)
15.97"
(405.64mm)
-1.21"
(-30.74mm)
46th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Dec 1916–Oct 1917
11-Month
16.09"
(408.69mm)
17.04"
(432.82mm)
-0.95"
(-24.13mm)
51st Driest
Driest since:
2002
77th Wettest
Wettest since:
1941
Nov 1916–Oct 1917
12-Month
16.79"
(426.47mm)
18.11"
(459.99mm)
-1.32"
(-33.52mm)
45th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
May 1916–Oct 1917
18-Month
27.59"
(700.79mm)
28.55"
(725.17mm)
-0.96"
(-24.38mm)
50th Driest
Driest since:
1901
78th Wettest
Wettest since:
1942
Nov 1915–Oct 1917
24-Month
36.68"
(931.67mm)
36.22"
(919.99mm)
0.46"
(11.68mm)
68th Driest
Driest since:
2003
59th Wettest
Wettest since:
1942
Nov 1914–Oct 1917
36-Month
56.24"
(1,428.50mm)
54.28"
(1,378.71mm)
1.96"
(49.79mm)
86th Driest
Driest since:
1956
40th Wettest
Wettest since:
1997
Nov 1913–Oct 1917
48-Month
79.47"
(2,018.54mm)
72.32"
(1,836.93mm)
7.15"
(181.61mm)
115th Driest
Driest since:
1956
10th Wettest
Wettest to Date
1998
Nov 1912–Oct 1917
60-Month
94.30"
(2,395.22mm)
90.35"
(2,294.89mm)
3.95"
(100.33mm)
95th Driest
Driest since:
1956
29th Wettest
Wettest since:
1999

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