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 1940

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1940
1-Month
1.78"
(45.21mm)
2.02"
(51.31mm)
-0.24"
(-6.10mm)
55th Driest
Driest since:
1974
74th Wettest
Wettest since:
2015
Ties: 1936
Apr–May 1940
2-Month
3.62"
(91.95mm)
3.86"
(98.04mm)
-0.24"
(-6.09mm)
61st Driest
Driest since:
2002
68th Wettest
Wettest since:
1957
Ties: 1959
Mar–May 1940
3-Month
5.06"
(128.52mm)
5.37"
(136.40mm)
-0.31"
(-7.88mm)
61st Driest
Driest since:
2002
68th Wettest
Wettest since:
1957
Feb–May 1940
4-Month
6.54"
(166.12mm)
6.46"
(164.08mm)
0.08"
(2.04mm)
75th Driest
Driest since:
2002
54th Wettest
Wettest since:
1905
Jan–May 1940
5-Month
8.34"
(211.84mm)
7.52"
(191.01mm)
0.82"
(20.83mm)
101st Driest
Driest since:
2002
28th Wettest
Wettest since:
1957
Ties: 1985
Dec 1939–May 1940
6-Month
8.96"
(227.58mm)
8.60"
(218.44mm)
0.36"
(9.14mm)
85th Driest
Driest since:
2002
43rd Wettest
Wettest since:
1957
Nov 1939–May 1940
7-Month
9.27"
(235.46mm)
9.66"
(245.36mm)
-0.39"
(-9.90mm)
62nd Driest
Driest since:
2002
66th Wettest
Wettest since:
1957
Oct 1939–May 1940
8-Month
9.93"
(252.22mm)
11.00"
(279.40mm)
-1.07"
(-27.18mm)
46th Driest
Driest since:
2002
82nd Wettest
Wettest since:
1995
Sep 1939–May 1940
9-Month
11.31"
(287.27mm)
12.43"
(315.72mm)
-1.12"
(-28.45mm)
45th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1942
Aug 1939–May 1940
10-Month
12.42"
(315.47mm)
14.44"
(366.78mm)
-2.02"
(-51.31mm)
28th Driest
Driest since:
2002
100th Wettest
Wettest since:
1942
Jul 1939–May 1940
11-Month
13.45"
(341.63mm)
16.54"
(420.12mm)
-3.09"
(-78.49mm)
13th Driest
Driest since:
2002
115th Wettest
Wettest since:
1942
Jun 1939–May 1940
12-Month
14.32"
(363.73mm)
18.08"
(459.23mm)
-3.76"
(-95.50mm)
10th Driest
Driest since:
2002
118th Wettest
Wettest since:
1942
Ties: 1954
Dec 1938–May 1940
18-Month
21.92"
(556.77mm)
26.70"
(678.18mm)
-4.78"
(-121.41mm)
9th Driest
Driest since:
2013
118th Wettest
Wettest since:
1942
Jun 1938–May 1940
24-Month
32.11"
(815.59mm)
36.18"
(918.97mm)
-4.07"
(-103.38mm)
20th Driest
Driest since:
1902
107th Wettest
Wettest since:
1942
Jun 1937–May 1940
36-Month
51.71"
(1,313.43mm)
54.21"
(1,376.93mm)
-2.50"
(-63.50mm)
37th Driest
Driest since:
2022
89th Wettest
Wettest since:
1943
Jun 1936–May 1940
48-Month
68.84"
(1,748.54mm)
72.23"
(1,834.64mm)
-3.39"
(-86.10mm)
34th Driest
Driest since:
1956
91st Wettest
Wettest since:
1944
Jun 1935–May 1940
60-Month
83.47"
(2,120.14mm)
90.24"
(2,292.10mm)
-6.77"
(-171.96mm)
24th Driest
Driest since:
2022
100th Wettest
Wettest since:
1987

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