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, January 1999

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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
January 1999 1-Month	1.07" (27.18mm)	1.06" (26.92mm)	0.01" (0.26mm)	80th Driest	Driest since: 1998	1919, 1931
	1.07" (27.18mm)	1.06" (26.92mm)	0.01" (0.26mm)	50th Wettest	Wettest since: 1997	1916
	Ties: 1899, 1917
Dec 1998–Jan 1999 2-Month	1.70" (43.18mm)	2.13" (54.10mm)	-0.43" (-10.92mm)	34th Driest	Driest since: 1998	1931
	1.70" (43.18mm)	2.13" (54.10mm)	-0.43" (-10.92mm)	95th Wettest	Wettest since: 1997	1914
	Ties: 1987, 2021
Nov 1998–Jan 1999 3-Month	3.04" (77.22mm)	3.20" (81.28mm)	-0.16" (-4.06mm)	56th Driest	Driest since: 1998	1904
Nov 1998–Jan 1999 3-Month	3.04" (77.22mm)	3.20" (81.28mm)	-0.16" (-4.06mm)	73rd Wettest	Wettest since: 1997	1979
Oct 1998–Jan 1999 4-Month	5.54" (140.72mm)	4.54" (115.32mm)	1.00" (25.40mm)	108th Driest	Driest since: 1998	1977
Oct 1998–Jan 1999 4-Month	5.54" (140.72mm)	4.54" (115.32mm)	1.00" (25.40mm)	21st Wettest	Wettest since: 1997	1909
Sep 1998–Jan 1999 5-Month	6.43" (163.32mm)	5.96" (151.38mm)	0.47" (11.94mm)	84th Driest	Driest since: 1996	1904
	6.43" (163.32mm)	5.96" (151.38mm)	0.47" (11.94mm)	45th Wettest	Wettest since: 1998	1942
	Ties: 1982
Aug 1998–Jan 1999 6-Month	8.28" (210.31mm)	7.98" (202.69mm)	0.30" (7.62mm)	73rd Driest	Driest since: 1996	1901
Aug 1998–Jan 1999 6-Month	8.28" (210.31mm)	7.98" (202.69mm)	0.30" (7.62mm)	56th Wettest	Wettest since: 1998	1942
Jul 1998–Jan 1999 7-Month	12.07" (306.58mm)	10.08" (256.03mm)	1.99" (50.55mm)	114th Driest	Driest since: 1996	1901
Jul 1998–Jan 1999 7-Month	12.07" (306.58mm)	10.08" (256.03mm)	1.99" (50.55mm)	15th Wettest	Wettest since: 1998	2007
Jun 1998–Jan 1999 8-Month	13.28" (337.31mm)	11.62" (295.15mm)	1.66" (42.16mm)	102nd Driest	Driest since: 1996	1901, 1981
Jun 1998–Jan 1999 8-Month	13.28" (337.31mm)	11.62" (295.15mm)	1.66" (42.16mm)	27th Wettest	Wettest since: 1998	1942
May 1998–Jan 1999 9-Month	14.34" (364.24mm)	13.64" (346.46mm)	0.70" (17.78mm)	77th Driest	Driest since: 1995	1901
May 1998–Jan 1999 9-Month	14.34" (364.24mm)	13.64" (346.46mm)	0.70" (17.78mm)	52nd Wettest	Wettest since: 1998	1942
Apr 1998–Jan 1999 10-Month	16.11" (409.19mm)	15.52" (394.21mm)	0.59" (14.98mm)	78th Driest	Driest since: 1995	1940
Apr 1998–Jan 1999 10-Month	16.11" (409.19mm)	15.52" (394.21mm)	0.59" (14.98mm)	51st Wettest	Wettest since: 1998	1942
Mar 1998–Jan 1999 11-Month	17.96" (456.18mm)	17.02" (432.31mm)	0.94" (23.87mm)	82nd Driest	Driest since: 1995	2021
Mar 1998–Jan 1999 11-Month	17.96" (456.18mm)	17.02" (432.31mm)	0.94" (23.87mm)	47th Wettest	Wettest since: 1998	1942
Feb 1998–Jan 1999 12-Month	19.04" (483.62mm)	18.10" (459.74mm)	0.94" (23.88mm)	86th Driest	Driest since: 1995	2003
Feb 1998–Jan 1999 12-Month	19.04" (483.62mm)	18.10" (459.74mm)	0.94" (23.88mm)	43rd Wettest	Wettest since: 1998	1942
Aug 1997–Jan 1999 18-Month	30.06" (763.52mm)	26.08" (662.43mm)	3.98" (101.09mm)	116th Driest	Driest since: 1997	2003
Aug 1997–Jan 1999 18-Month	30.06" (763.52mm)	26.08" (662.43mm)	3.98" (101.09mm)	12th Wettest	Wettest since: 1998	1942
Feb 1997–Jan 1999 24-Month	40.34" (1,024.64mm)	36.16" (918.46mm)	4.18" (106.18mm)	113th Driest	Driest since: 1996	2003
Feb 1997–Jan 1999 24-Month	40.34" (1,024.64mm)	36.16" (918.46mm)	4.18" (106.18mm)	15th Wettest	Wettest since: 1998	1943
Feb 1996–Jan 1999 36-Month	60.25" (1,530.35mm)	54.20" (1,376.68mm)	6.05" (153.67mm)	115th Driest	Driest since: 1997	1977
	60.25" (1,530.35mm)	54.20" (1,376.68mm)	6.05" (153.67mm)	12th Wettest	Wettest since: 1998	1943
	Ties: 1917
Feb 1995–Jan 1999 48-Month	82.64" (2,099.06mm)	72.24" (1,834.90mm)	10.40" (264.16mm)	124th Driest	Driest since: 1998	1957
Feb 1995–Jan 1999 48-Month	82.64" (2,099.06mm)	72.24" (1,834.90mm)	10.40" (264.16mm)	2nd Wettest	Wettest since: 1987	1987
Feb 1994–Jan 1999 60-Month	100.13" (2,543.30mm)	90.25" (2,292.35mm)	9.88" (250.95mm)	120th Driest	Driest since: 1998	1957
Feb 1994–Jan 1999 60-Month	100.13" (2,543.30mm)	90.25" (2,292.35mm)	9.88" (250.95mm)	5th Wettest	Wettest since: 1988	2000

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 22, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings