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, May 2012

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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 2012 1-Month	0.91" (23.11mm)	2.02" (51.31mm)	-1.11" (-28.20mm)	8th Driest	Driest since: 2006	1974
	0.91" (23.11mm)	2.02" (51.31mm)	-1.11" (-28.20mm)	121st Wettest	Wettest since: 2011	2015
	Ties: 1911, 1918, 1932, 2006
Apr–May 2012 2-Month	2.29" (58.17mm)	3.86" (98.04mm)	-1.57" (-39.87mm)	12th Driest	Driest since: 2006	2002
	2.29" (58.17mm)	3.86" (98.04mm)	-1.57" (-39.87mm)	117th Wettest	Wettest since: 2011	1957
	Ties: 1896, 1927, 1954
Mar–May 2012 3-Month	2.74" (69.60mm)	5.37" (136.40mm)	-2.63" (-66.80mm)	4th Driest	Driest since: 2002	2002
Mar–May 2012 3-Month	2.74" (69.60mm)	5.37" (136.40mm)	-2.63" (-66.80mm)	125th Wettest	Wettest since: 2011	1957
Feb–May 2012 4-Month	4.10" (104.14mm)	6.46" (164.08mm)	-2.36" (-59.94mm)	8th Driest	Driest since: 2006	2002
Feb–May 2012 4-Month	4.10" (104.14mm)	6.46" (164.08mm)	-2.36" (-59.94mm)	121st Wettest	Wettest since: 2011	1905
Jan–May 2012 5-Month	4.79" (121.67mm)	7.52" (191.01mm)	-2.73" (-69.34mm)	6th Driest	Driest since: 2002	2002
Jan–May 2012 5-Month	4.79" (121.67mm)	7.52" (191.01mm)	-2.73" (-69.34mm)	123rd Wettest	Wettest since: 2011	1957
Dec 2011–May 2012 6-Month	5.70" (144.78mm)	8.60" (218.44mm)	-2.90" (-73.66mm)	4th Driest	Driest since: 2002	2002
Dec 2011–May 2012 6-Month	5.70" (144.78mm)	8.60" (218.44mm)	-2.90" (-73.66mm)	124th Wettest	Wettest since: 2011	1957
Nov 2011–May 2012 7-Month	6.69" (169.93mm)	9.66" (245.36mm)	-2.97" (-75.43mm)	7th Driest	Driest since: 2002	2002
Nov 2011–May 2012 7-Month	6.69" (169.93mm)	9.66" (245.36mm)	-2.97" (-75.43mm)	121st Wettest	Wettest since: 2011	1957
Oct 2011–May 2012 8-Month	8.35" (212.09mm)	11.00" (279.40mm)	-2.65" (-67.31mm)	11th Driest	Driest since: 2002	2002
	8.35" (212.09mm)	11.00" (279.40mm)	-2.65" (-67.31mm)	117th Wettest	Wettest since: 2011	1995
	Ties: 1936
Sep 2011–May 2012 9-Month	9.62" (244.35mm)	12.43" (315.72mm)	-2.81" (-71.37mm)	11th Driest	Driest since: 2002	2002
Sep 2011–May 2012 9-Month	9.62" (244.35mm)	12.43" (315.72mm)	-2.81" (-71.37mm)	117th Wettest	Wettest since: 2011	1942
Aug 2011–May 2012 10-Month	11.22" (284.99mm)	14.44" (366.78mm)	-3.22" (-81.79mm)	12th Driest	Driest since: 2002	2002
Aug 2011–May 2012 10-Month	11.22" (284.99mm)	14.44" (366.78mm)	-3.22" (-81.79mm)	116th Wettest	Wettest since: 2011	1942
Jul 2011–May 2012 11-Month	13.76" (349.50mm)	16.54" (420.12mm)	-2.78" (-70.62mm)	21st Driest	Driest since: 2006	2002
Jul 2011–May 2012 11-Month	13.76" (349.50mm)	16.54" (420.12mm)	-2.78" (-70.62mm)	107th Wettest	Wettest since: 2011	1942
Jun 2011–May 2012 12-Month	14.70" (373.38mm)	18.08" (459.23mm)	-3.38" (-85.85mm)	16th Driest	Driest since: 2002	2002
Jun 2011–May 2012 12-Month	14.70" (373.38mm)	18.08" (459.23mm)	-3.38" (-85.85mm)	112th Wettest	Wettest since: 2011	1942
Dec 2010–May 2012 18-Month	24.06" (611.12mm)	26.70" (678.18mm)	-2.64" (-67.06mm)	29th Driest	Driest since: 2004	2013
Dec 2010–May 2012 18-Month	24.06" (611.12mm)	26.70" (678.18mm)	-2.64" (-67.06mm)	98th Wettest	Wettest since: 2011	1942
Jun 2010–May 2012 24-Month	33.30" (845.82mm)	36.18" (918.97mm)	-2.88" (-73.15mm)	31st Driest	Driest since: 2004	1902
Jun 2010–May 2012 24-Month	33.30" (845.82mm)	36.18" (918.97mm)	-2.88" (-73.15mm)	96th Wettest	Wettest since: 2011	1942
Jun 2009–May 2012 36-Month	52.20" (1,325.88mm)	54.21" (1,376.93mm)	-2.01" (-51.05mm)	44th Driest	Driest since: 2006	2022
Jun 2009–May 2012 36-Month	52.20" (1,325.88mm)	54.21" (1,376.93mm)	-2.01" (-51.05mm)	82nd Wettest	Wettest since: 2011	1943
Jun 2008–May 2012 48-Month	70.11" (1,780.79mm)	72.23" (1,834.64mm)	-2.12" (-53.85mm)	44th Driest	Driest since: 2006	1956
Jun 2008–May 2012 48-Month	70.11" (1,780.79mm)	72.23" (1,834.64mm)	-2.12" (-53.85mm)	81st Wettest	Wettest since: 2011	1944
Jun 2007–May 2012 60-Month	88.34" (2,243.84mm)	90.24" (2,292.10mm)	-1.90" (-48.26mm)	47th Driest	Driest since: 2006	2022
Jun 2007–May 2012 60-Month	88.34" (2,243.84mm)	90.24" (2,292.10mm)	-1.90" (-48.26mm)	77th Wettest	Wettest since: 2011	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings