Statewide Rankings

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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 1987

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
April 1987 1-Month	0.86" (21.84mm)	1.84" (46.74mm)	-0.98" (-24.90mm)	12th Driest	Driest since: 1982	2002
	0.86" (21.84mm)	1.84" (46.74mm)	-0.98" (-24.90mm)	118th Wettest	Wettest since: 1986	1900
	Ties: 1936
Mar–Apr 1987 2-Month	2.49" (63.25mm)	3.35" (85.09mm)	-0.86" (-21.84mm)	31st Driest	Driest since: 1982	2002
Mar–Apr 1987 2-Month	2.49" (63.25mm)	3.35" (85.09mm)	-0.86" (-21.84mm)	99th Wettest	Wettest since: 1986	1906
Feb–Apr 1987 3-Month	4.30" (109.22mm)	4.44" (112.78mm)	-0.14" (-3.56mm)	68th Driest	Driest since: 1982	2002
	4.30" (109.22mm)	4.44" (112.78mm)	-0.14" (-3.56mm)	62nd Wettest	Wettest since: 1986	1905
	Ties: 1947
Jan–Apr 1987 4-Month	5.41" (137.41mm)	5.51" (139.95mm)	-0.10" (-2.54mm)	72nd Driest	Driest since: 1986	2002
	5.41" (137.41mm)	5.51" (139.95mm)	-0.10" (-2.54mm)	58th Wettest	Wettest since: 1985	1905
	Ties: 1996
Dec 1986–Apr 1987 5-Month	6.00" (152.40mm)	6.58" (167.13mm)	-0.58" (-14.73mm)	48th Driest	Driest since: 1982	2002
Dec 1986–Apr 1987 5-Month	6.00" (152.40mm)	6.58" (167.13mm)	-0.58" (-14.73mm)	81st Wettest	Wettest since: 1986	1905
Nov 1986–Apr 1987 6-Month	7.78" (197.61mm)	7.65" (194.31mm)	0.13" (3.30mm)	73rd Driest	Driest since: 1982	1904
	7.78" (197.61mm)	7.65" (194.31mm)	0.13" (3.30mm)	56th Wettest	Wettest since: 1986	1984
	Ties: 1975
Oct 1986–Apr 1987 7-Month	9.90" (251.46mm)	8.98" (228.09mm)	0.92" (23.37mm)	90th Driest	Driest since: 1982	2002
Oct 1986–Apr 1987 7-Month	9.90" (251.46mm)	8.98" (228.09mm)	0.92" (23.37mm)	39th Wettest	Wettest since: 1986	1942
Sep 1986–Apr 1987 8-Month	11.96" (303.78mm)	10.41" (264.41mm)	1.55" (39.37mm)	103rd Driest	Driest since: 1982	1902, 2002
Sep 1986–Apr 1987 8-Month	11.96" (303.78mm)	10.41" (264.41mm)	1.55" (39.37mm)	26th Wettest	Wettest since: 1986	1942
Aug 1986–Apr 1987 9-Month	14.09" (357.89mm)	12.42" (315.47mm)	1.67" (42.42mm)	104th Driest	Driest since: 1986	2002
Aug 1986–Apr 1987 9-Month	14.09" (357.89mm)	12.42" (315.47mm)	1.67" (42.42mm)	25th Wettest	Wettest since: 1985	1942
Jul 1986–Apr 1987 10-Month	16.42" (417.07mm)	14.52" (368.81mm)	1.90" (48.26mm)	102nd Driest	Driest since: 1984	1902
Jul 1986–Apr 1987 10-Month	16.42" (417.07mm)	14.52" (368.81mm)	1.90" (48.26mm)	27th Wettest	Wettest since: 1986	1942
Jun 1986–Apr 1987 11-Month	18.50" (469.90mm)	16.07" (408.18mm)	2.43" (61.72mm)	109th Driest	Driest since: 1986	1981
Jun 1986–Apr 1987 11-Month	18.50" (469.90mm)	16.07" (408.18mm)	2.43" (61.72mm)	20th Wettest	Wettest since: 1985	1942
May 1986–Apr 1987 12-Month	20.00" (508.00mm)	18.08" (459.23mm)	1.92" (48.77mm)	104th Driest	Driest since: 1986	2013
May 1986–Apr 1987 12-Month	20.00" (508.00mm)	18.08" (459.23mm)	1.92" (48.77mm)	25th Wettest	Wettest since: 1985	1942
Nov 1985–Apr 1987 18-Month	28.42" (721.87mm)	25.76" (654.30mm)	2.66" (67.57mm)	107th Driest	Driest since: 1986	2013
	28.42" (721.87mm)	25.76" (654.30mm)	2.66" (67.57mm)	21st Wettest	Wettest since: 1985	1942
	Ties: 1920
May 1985–Apr 1987 24-Month	39.56" (1,004.82mm)	36.16" (918.46mm)	3.40" (86.36mm)	107th Driest	Driest since: 1982	1902
May 1985–Apr 1987 24-Month	39.56" (1,004.82mm)	36.16" (918.46mm)	3.40" (86.36mm)	21st Wettest	Wettest since: 1986	1942
May 1984–Apr 1987 36-Month	60.32" (1,532.13mm)	54.22" (1,377.19mm)	6.10" (154.94mm)	115th Driest	Driest since: 1983	1955
May 1984–Apr 1987 36-Month	60.32" (1,532.13mm)	54.22" (1,377.19mm)	6.10" (154.94mm)	12th Wettest	Wettest since: 1986	1985
May 1983–Apr 1987 48-Month	81.70" (2,075.18mm)	72.24" (1,834.90mm)	9.46" (240.28mm)	120th Driest	Driest since: 1984	1904
May 1983–Apr 1987 48-Month	81.70" (2,075.18mm)	72.24" (1,834.90mm)	9.46" (240.28mm)	6th Wettest	Wettest since: 1986	1986
May 1982–Apr 1987 60-Month	103.62" (2,631.95mm)	90.24" (2,292.10mm)	13.38" (339.85mm)	124th Driest	Driest since: 1986	1957
May 1982–Apr 1987 60-Month	103.62" (2,631.95mm)	90.24" (2,292.10mm)	13.38" (339.85mm)	1st Wettest	Wettest to Date	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings