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, April 1999

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
April 1999
1-Month		4.38"
(111.25mm)		1.84"
(46.74mm)		2.54"
(64.51mm)		126th Driest
Driest since:
2002
3rd Wettest
Wettest since:
1900
Mar–Apr 1999
2-Month		5.10"
(129.54mm)		3.35"
(85.09mm)		1.75"
(44.45mm)		121st Driest
Driest since:
2002
8th Wettest
Wettest since:
1906
Feb–Apr 1999
3-Month		5.76"
(146.30mm)		4.44"
(112.78mm)		1.32"
(33.52mm)		113th Driest
Driest since:
2002
16th Wettest
Wettest since:
1905
Jan–Apr 1999
4-Month		6.83"
(173.48mm)		5.51"
(139.95mm)		1.32"
(33.53mm)		112th Driest
Driest since:
2002
17th Wettest
Wettest since:
1905
Dec 1998–Apr 1999
5-Month		7.46"
(189.48mm)		6.58"
(167.13mm)		0.88"
(22.35mm)		96th Driest
Driest since:
2002
32nd Wettest
Wettest since:
1905
Nov 1998–Apr 1999
6-Month		8.80"
(223.52mm)		7.65"
(194.31mm)		1.15"
(29.21mm)		102nd Driest
Driest since:
1904
26th Wettest
Wettest since:
1984
Ties: 1897, 2019
Oct 1998–Apr 1999
7-Month		11.30"
(287.02mm)		8.98"
(228.09mm)		2.32"
(58.93mm)		117th Driest
Driest since:
2002
11th Wettest
Wettest since:
1942
Sep 1998–Apr 1999
8-Month		12.19"
(309.63mm)		10.41"
(264.41mm)		1.78"
(45.22mm)		104th Driest
Driest since:
1902, 2002
24th Wettest
Wettest since:
1942
Aug 1998–Apr 1999
9-Month		14.04"
(356.62mm)		12.42"
(315.47mm)		1.62"
(41.15mm)		102nd Driest
Driest since:
2002
26th Wettest
Wettest since:
1942
Jul 1998–Apr 1999
10-Month		17.83"
(452.88mm)		14.52"
(368.81mm)		3.31"
(84.07mm)		122nd Driest
Driest since:
1902
6th Wettest
Wettest since:
1942
Jun 1998–Apr 1999
11-Month		19.04"
(483.62mm)		16.07"
(408.18mm)		2.97"
(75.44mm)		118th Driest
Driest since:
1981
10th Wettest
Wettest since:
1942
May 1998–Apr 1999
12-Month		20.10"
(510.54mm)		18.08"
(459.23mm)		2.02"
(51.31mm)		106th Driest
Driest since:
2013
22nd Wettest
Wettest since:
1942
Nov 1997–Apr 1999
18-Month		27.69"
(703.33mm)		25.76"
(654.30mm)		1.93"
(49.03mm)		100th Driest
Driest since:
2013
27th Wettest
Wettest since:
1942
May 1997–Apr 1999
24-Month		42.08"
(1,068.83mm)		36.16"
(918.46mm)		5.92"
(150.37mm)		120th Driest
Driest since:
1902
7th Wettest
Wettest since:
1942
May 1996–Apr 1999
36-Month		62.28"
(1,581.91mm)		54.22"
(1,377.19mm)		8.06"
(204.72mm)		120th Driest
Driest since:
1955
6th Wettest
Wettest since:
1985
May 1995–Apr 1999
48-Month		82.50"
(2,095.50mm)		72.24"
(1,834.90mm)		10.26"
(260.60mm)		121st Driest
Driest since:
1904
4th Wettest
Wettest since:
1986
May 1994–Apr 1999
60-Month		101.32"
(2,573.53mm)		90.24"
(2,292.10mm)		11.08"
(281.43mm)		120th Driest
Driest since:
1957
4th Wettest
Wettest since:
1987

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