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 1909

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
May 1909
1-Month
1.28"
(32.51mm)
2.02"
(51.31mm)
-0.74"
(-18.80mm)
25th Driest
Driest since:
1974
104th Wettest
Wettest since:
2015
Apr–May 1909
2-Month
2.98"
(75.69mm)
3.86"
(98.04mm)
-0.88"
(-22.35mm)
33rd Driest
Driest since:
2002
96th Wettest
Wettest since:
1957
Mar–May 1909
3-Month
4.43"
(112.52mm)
5.37"
(136.40mm)
-0.94"
(-23.88mm)
32nd Driest
Driest since:
2002
97th Wettest
Wettest since:
1957
Feb–May 1909
4-Month
5.87"
(149.10mm)
6.46"
(164.08mm)
-0.59"
(-14.98mm)
46th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1905
Jan–May 1909
5-Month
7.69"
(195.33mm)
7.52"
(191.01mm)
0.17"
(4.32mm)
79th Driest
Driest since:
2002
50th Wettest
Wettest since:
1957
Dec 1908–May 1909
6-Month
9.35"
(237.49mm)
8.60"
(218.44mm)
0.75"
(19.05mm)
94th Driest
Driest since:
2002
34th Wettest
Wettest since:
1957
Ties: 1916
Nov 1908–May 1909
7-Month
10.69"
(271.53mm)
9.66"
(245.36mm)
1.03"
(26.17mm)
94th Driest
Driest since:
2002
34th Wettest
Wettest since:
1957
Oct 1908–May 1909
8-Month
13.27"
(337.06mm)
11.00"
(279.40mm)
2.27"
(57.66mm)
108th Driest
Driest since:
2002
20th Wettest
Wettest since:
1995
Sep 1908–May 1909
9-Month
14.01"
(355.85mm)
12.43"
(315.72mm)
1.58"
(40.13mm)
99th Driest
Driest since:
2002
29th Wettest
Wettest since:
1942
Aug 1908–May 1909
10-Month
16.51"
(419.35mm)
14.44"
(366.78mm)
2.07"
(52.57mm)
104th Driest
Driest since:
2002
24th Wettest
Wettest since:
1942
Jul 1908–May 1909
11-Month
18.91"
(480.31mm)
16.54"
(420.12mm)
2.37"
(60.19mm)
105th Driest
Driest since:
2002
23rd Wettest
Wettest since:
1942
Jun 1908–May 1909
12-Month
19.96"
(506.98mm)
18.08"
(459.23mm)
1.88"
(47.75mm)
99th Driest
Driest since:
2002
29th Wettest
Wettest since:
1942
Ties: 1898, 1970
Dec 1907–May 1909
18-Month
27.44"
(696.98mm)
26.70"
(678.18mm)
0.74"
(18.80mm)
78th Driest
Driest since:
2013
49th Wettest
Wettest since:
1942
Jun 1907–May 1909
24-Month
36.21"
(919.73mm)
36.18"
(918.97mm)
0.03"
(0.76mm)
69th Driest
Driest since:
1902
58th Wettest
Wettest since:
1942
Jun 1906–May 1909
36-Month
55.49"
(1,409.45mm)
54.21"
(1,376.93mm)
1.28"
(32.52mm)
83rd Driest
Driest since:
2022
43rd Wettest
Wettest since:
1943
Ties: 2015
Jun 1905–May 1909
48-Month
74.67"
(1,896.62mm)
72.23"
(1,834.64mm)
2.44"
(61.98mm)
85th Driest
Driest since:
1956
40th Wettest
Wettest since:
1944
Jun 1904–May 1909
60-Month
98.03"
(2,489.96mm)
90.24"
(2,292.10mm)
7.79"
(197.86mm)
113th Driest
Driest since:
2022
11th Wettest
Wettest to Date
1987

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