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, September 1897

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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
September 1897 1-Month	1.65" (41.91mm)	1.43" (36.32mm)	0.22" (5.59mm)	82nd Driest	Driest since: 1895	1956
September 1897 1-Month	1.65" (41.91mm)	1.43" (36.32mm)	0.22" (5.59mm)	47th Wettest	Wettest since: 1896	2013
Aug–Sep 1897 2-Month	3.98" (101.09mm)	3.46" (87.88mm)	0.52" (13.21mm)	94th Driest	Driest since: 1896	1944
Aug–Sep 1897 2-Month	3.98" (101.09mm)	3.46" (87.88mm)	0.52" (13.21mm)	35th Wettest	Wettest to Date	2013
Jul–Sep 1897 3-Month	6.06" (153.92mm)	5.56" (141.22mm)	0.50" (12.70mm)	80th Driest	Driest since: 1895	1900
Jul–Sep 1897 3-Month	6.06" (153.92mm)	5.56" (141.22mm)	0.50" (12.70mm)	49th Wettest	Wettest since: 1896	2013
Jun–Sep 1897 4-Month	7.88" (200.15mm)	7.10" (180.34mm)	0.78" (19.81mm)	90th Driest	Driest since: 1896	1924
Jun–Sep 1897 4-Month	7.88" (200.15mm)	7.10" (180.34mm)	0.78" (19.81mm)	39th Wettest	Wettest to Date	1965
May–Sep 1897 5-Month	10.01" (254.25mm)	9.12" (231.65mm)	0.89" (22.60mm)	95th Driest	Driest since: 1896	1939
May–Sep 1897 5-Month	10.01" (254.25mm)	9.12" (231.65mm)	0.89" (22.60mm)	34th Wettest	Wettest to Date	1965
Apr–Sep 1897 6-Month	11.25" (285.75mm)	10.96" (278.38mm)	0.29" (7.37mm)	80th Driest	Driest since: 1896	1939
Apr–Sep 1897 6-Month	11.25" (285.75mm)	10.96" (278.38mm)	0.29" (7.37mm)	49th Wettest	Wettest to Date	1999
Mar–Sep 1897 7-Month	13.74" (349.00mm)	12.47" (316.74mm)	1.27" (32.26mm)	96th Driest	Driest since: 1896	2002
Mar–Sep 1897 7-Month	13.74" (349.00mm)	12.47" (316.74mm)	1.27" (32.26mm)	33rd Wettest	Wettest to Date	1941
Feb–Sep 1897 8-Month	15.82" (401.83mm)	13.56" (344.42mm)	2.26" (57.41mm)	114th Driest	Driest since: 1896	2002
Feb–Sep 1897 8-Month	15.82" (401.83mm)	13.56" (344.42mm)	2.26" (57.41mm)	15th Wettest	Wettest to Date	1941
Jan–Sep 1897 9-Month	17.09" (434.09mm)	14.62" (371.35mm)	2.47" (62.74mm)	116th Driest	Driest since: 1896	2002
Jan–Sep 1897 9-Month	17.09" (434.09mm)	14.62" (371.35mm)	2.47" (62.74mm)	13th Wettest	Wettest to Date	1957
Dec 1896–Sep 1897 10-Month	17.86" (453.64mm)	15.70" (398.78mm)	2.16" (54.86mm)	108th Driest	Driest since: 1896	2002
Dec 1896–Sep 1897 10-Month	17.86" (453.64mm)	15.70" (398.78mm)	2.16" (54.86mm)	20th Wettest	Wettest to Date	1957
Nov 1896–Sep 1897 11-Month	18.81" (477.77mm)	16.76" (425.70mm)	2.05" (52.07mm)	106th Driest	Driest since: 1896	2002
Nov 1896–Sep 1897 11-Month	18.81" (477.77mm)	16.76" (425.70mm)	2.05" (52.07mm)	22nd Wettest	Wettest to Date	1941
Oct 1896–Sep 1897 12-Month	19.90" (505.46mm)	18.10" (459.74mm)	1.80" (45.72mm)	97th Driest	Driest since: 1896	2002
Oct 1896–Sep 1897 12-Month	19.90" (505.46mm)	18.10" (459.74mm)	1.80" (45.72mm)	31st Wettest	Wettest to Date	1995
Apr 1896–Sep 1897 18-Month	29.37" (746.00mm)	29.08" (738.63mm)	0.29" (7.37mm)	70th Driest	Driest since: 1896	2002
Apr 1896–Sep 1897 18-Month	29.37" (746.00mm)	29.08" (738.63mm)	0.29" (7.37mm)	58th Wettest	Wettest to Date	1942
Oct 1895–Sep 1897 24-Month	37.09" (942.09mm)	36.22" (919.99mm)	0.87" (22.10mm)	80th Driest	Driest to Date	2003
Oct 1895–Sep 1897 24-Month	37.09" (942.09mm)	36.22" (919.99mm)	0.87" (22.10mm)	47th Wettest	Wettest to Date	1942

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings