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 2015

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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
April 2015 1-Month	1.88" (47.75mm)	1.84" (46.74mm)	0.04" (1.01mm)	81st Driest	Driest since: 2014	2002
April 2015 1-Month	1.88" (47.75mm)	1.84" (46.74mm)	0.04" (1.01mm)	48th Wettest	Wettest since: 2011	1900
Mar–Apr 2015 2-Month	2.74" (69.60mm)	3.35" (85.09mm)	-0.61" (-15.49mm)	44th Driest	Driest since: 2014	2002
	2.74" (69.60mm)	3.35" (85.09mm)	-0.61" (-15.49mm)	85th Wettest	Wettest since: 2013	1906
	Ties: 2013
Feb–Apr 2015 3-Month	4.09" (103.89mm)	4.44" (112.78mm)	-0.35" (-8.89mm)	54th Driest	Driest since: 2014	2002
	4.09" (103.89mm)	4.44" (112.78mm)	-0.35" (-8.89mm)	75th Wettest	Wettest since: 2011	1905
	Ties: 1964
Jan–Apr 2015 4-Month	4.74" (120.40mm)	5.51" (139.95mm)	-0.77" (-19.55mm)	39th Driest	Driest since: 2013	2002
Jan–Apr 2015 4-Month	4.74" (120.40mm)	5.51" (139.95mm)	-0.77" (-19.55mm)	90th Wettest	Wettest since: 2014	1905
Dec 2014–Apr 2015 5-Month	6.05" (153.67mm)	6.58" (167.13mm)	-0.53" (-13.46mm)	51st Driest	Driest since: 2014	2002
	6.05" (153.67mm)	6.58" (167.13mm)	-0.53" (-13.46mm)	77th Wettest	Wettest since: 2011	1905
	Ties: 2001
Nov 2014–Apr 2015 6-Month	7.17" (182.12mm)	7.65" (194.31mm)	-0.48" (-12.19mm)	48th Driest	Driest since: 2014	1904
Nov 2014–Apr 2015 6-Month	7.17" (182.12mm)	7.65" (194.31mm)	-0.48" (-12.19mm)	80th Wettest	Wettest since: 2011	1984
Oct 2014–Apr 2015 7-Month	8.25" (209.55mm)	8.98" (228.09mm)	-0.73" (-18.54mm)	47th Driest	Driest since: 2013	2002
Oct 2014–Apr 2015 7-Month	8.25" (209.55mm)	8.98" (228.09mm)	-0.73" (-18.54mm)	81st Wettest	Wettest since: 2014	1942
Sep 2014–Apr 2015 8-Month	10.33" (262.38mm)	10.41" (264.41mm)	-0.08" (-2.03mm)	65th Driest	Driest since: 2013	1902, 2002
Sep 2014–Apr 2015 8-Month	10.33" (262.38mm)	10.41" (264.41mm)	-0.08" (-2.03mm)	63rd Wettest	Wettest since: 2014	1942
Aug 2014–Apr 2015 9-Month	12.92" (328.17mm)	12.42" (315.47mm)	0.50" (12.70mm)	75th Driest	Driest since: 2013	2002
	12.92" (328.17mm)	12.42" (315.47mm)	0.50" (12.70mm)	53rd Wettest	Wettest since: 2014	1942
	Ties: 1957
Jul 2014–Apr 2015 10-Month	15.68" (398.27mm)	14.52" (368.81mm)	1.16" (29.46mm)	87th Driest	Driest since: 2013	1902
Jul 2014–Apr 2015 10-Month	15.68" (398.27mm)	14.52" (368.81mm)	1.16" (29.46mm)	41st Wettest	Wettest since: 2014	1942
Jun 2014–Apr 2015 11-Month	16.87" (428.50mm)	16.07" (408.18mm)	0.80" (20.32mm)	83rd Driest	Driest since: 2013	1981
	16.87" (428.50mm)	16.07" (408.18mm)	0.80" (20.32mm)	45th Wettest	Wettest since: 2014	1942
	Ties: 2000
May 2014–Apr 2015 12-Month	19.02" (483.11mm)	18.08" (459.23mm)	0.94" (23.88mm)	85th Driest	Driest since: 2013	2013
May 2014–Apr 2015 12-Month	19.02" (483.11mm)	18.08" (459.23mm)	0.94" (23.88mm)	43rd Wettest	Wettest since: 2014	1942
Nov 2013–Apr 2015 18-Month	25.85" (656.59mm)	25.76" (654.30mm)	0.09" (2.29mm)	71st Driest	Driest since: 2014	2013
Nov 2013–Apr 2015 18-Month	25.85" (656.59mm)	25.76" (654.30mm)	0.09" (2.29mm)	56th Wettest	Wettest since: 2010	1942
May 2013–Apr 2015 24-Month	38.13" (968.50mm)	36.16" (918.46mm)	1.97" (50.04mm)	91st Driest	Driest since: 2014	1902
May 2013–Apr 2015 24-Month	38.13" (968.50mm)	36.16" (918.46mm)	1.97" (50.04mm)	36th Wettest	Wettest since: 2008	1942
May 2012–Apr 2015 36-Month	51.10" (1,297.94mm)	54.22" (1,377.19mm)	-3.12" (-79.25mm)	36th Driest	Driest since: 2014	1955
May 2012–Apr 2015 36-Month	51.10" (1,297.94mm)	54.22" (1,377.19mm)	-3.12" (-79.25mm)	90th Wettest	Wettest since: 2012	1985
May 2011–Apr 2015 48-Month	67.46" (1,713.48mm)	72.24" (1,834.90mm)	-4.78" (-121.42mm)	26th Driest	Driest since: 2014	1904
May 2011–Apr 2015 48-Month	67.46" (1,713.48mm)	72.24" (1,834.90mm)	-4.78" (-121.42mm)	99th Wettest	Wettest since: 2012	1986
May 2010–Apr 2015 60-Month	84.83" (2,154.68mm)	90.24" (2,292.10mm)	-5.41" (-137.42mm)	29th Driest	Driest since: 2013	1957
May 2010–Apr 2015 60-Month	84.83" (2,154.68mm)	90.24" (2,292.10mm)	-5.41" (-137.42mm)	95th Wettest	Wettest since: 2014	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings