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 1937

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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 1937 1-Month	1.25" (31.75mm)	1.43" (36.32mm)	-0.18" (-4.57mm)	56th Driest	Driest since: 1934	1956
	1.25" (31.75mm)	1.43" (36.32mm)	-0.18" (-4.57mm)	73rd Wettest	Wettest since: 1936	2013
	Ties: 1900, 1924
Aug–Sep 1937 2-Month	2.78" (70.61mm)	3.46" (87.88mm)	-0.68" (-17.27mm)	33rd Driest	Driest since: 1932	1944
Aug–Sep 1937 2-Month	2.78" (70.61mm)	3.46" (87.88mm)	-0.68" (-17.27mm)	96th Wettest	Wettest since: 1936	2013
Jul–Sep 1937 3-Month	4.67" (118.62mm)	5.56" (141.22mm)	-0.89" (-22.60mm)	34th Driest	Driest since: 1934	1900
	4.67" (118.62mm)	5.56" (141.22mm)	-0.89" (-22.60mm)	95th Wettest	Wettest since: 1936	2013
	Ties: 1926, 1987
Jun–Sep 1937 4-Month	6.51" (165.35mm)	7.10" (180.34mm)	-0.59" (-14.99mm)	49th Driest	Driest since: 1935	1924
	6.51" (165.35mm)	7.10" (180.34mm)	-0.59" (-14.99mm)	80th Wettest	Wettest since: 1936	1965
	Ties: 1902
May–Sep 1937 5-Month	7.80" (198.12mm)	9.12" (231.65mm)	-1.32" (-33.53mm)	28th Driest	Driest since: 1934	1939
May–Sep 1937 5-Month	7.80" (198.12mm)	9.12" (231.65mm)	-1.32" (-33.53mm)	101st Wettest	Wettest since: 1936	1965
Apr–Sep 1937 6-Month	8.94" (227.08mm)	10.96" (278.38mm)	-2.02" (-51.30mm)	19th Driest	Driest since: 1934	1939
Apr–Sep 1937 6-Month	8.94" (227.08mm)	10.96" (278.38mm)	-2.02" (-51.30mm)	110th Wettest	Wettest since: 1936	1999
Mar–Sep 1937 7-Month	10.52" (267.21mm)	12.47" (316.74mm)	-1.95" (-49.53mm)	24th Driest	Driest since: 1934	2002
Mar–Sep 1937 7-Month	10.52" (267.21mm)	12.47" (316.74mm)	-1.95" (-49.53mm)	105th Wettest	Wettest since: 1936	1941
Feb–Sep 1937 8-Month	12.14" (308.36mm)	13.56" (344.42mm)	-1.42" (-36.06mm)	37th Driest	Driest since: 1934	2002
Feb–Sep 1937 8-Month	12.14" (308.36mm)	13.56" (344.42mm)	-1.42" (-36.06mm)	92nd Wettest	Wettest since: 1936	1941
Jan–Sep 1937 9-Month	12.93" (328.42mm)	14.62" (371.35mm)	-1.69" (-42.93mm)	32nd Driest	Driest since: 1934	2002
Jan–Sep 1937 9-Month	12.93" (328.42mm)	14.62" (371.35mm)	-1.69" (-42.93mm)	97th Wettest	Wettest since: 1936	1957
Dec 1936–Sep 1937 10-Month	14.12" (358.65mm)	15.70" (398.78mm)	-1.58" (-40.13mm)	32nd Driest	Driest since: 1934	2002
Dec 1936–Sep 1937 10-Month	14.12" (358.65mm)	15.70" (398.78mm)	-1.58" (-40.13mm)	96th Wettest	Wettest since: 1936	1957
Nov 1936–Sep 1937 11-Month	14.47" (367.54mm)	16.76" (425.70mm)	-2.29" (-58.16mm)	21st Driest	Driest since: 1934	2002
Nov 1936–Sep 1937 11-Month	14.47" (367.54mm)	16.76" (425.70mm)	-2.29" (-58.16mm)	107th Wettest	Wettest since: 1936	1941
Oct 1936–Sep 1937 12-Month	15.74" (399.80mm)	18.10" (459.74mm)	-2.36" (-59.94mm)	29th Driest	Driest since: 1934	2002
Oct 1936–Sep 1937 12-Month	15.74" (399.80mm)	18.10" (459.74mm)	-2.36" (-59.94mm)	99th Wettest	Wettest since: 1936	1995
Apr 1936–Sep 1937 18-Month	26.28" (667.51mm)	29.08" (738.63mm)	-2.80" (-71.12mm)	30th Driest	Driest since: 1935	2002
	26.28" (667.51mm)	29.08" (738.63mm)	-2.80" (-71.12mm)	98th Wettest	Wettest since: 1936	1942
	Ties: 1989
Oct 1935–Sep 1937 24-Month	31.99" (812.55mm)	36.22" (919.99mm)	-4.23" (-107.44mm)	20th Driest	Driest since: 1935	2003
Oct 1935–Sep 1937 24-Month	31.99" (812.55mm)	36.22" (919.99mm)	-4.23" (-107.44mm)	107th Wettest	Wettest since: 1936	1942
Oct 1934–Sep 1937 36-Month	49.61" (1,260.09mm)	54.27" (1,378.46mm)	-4.66" (-118.37mm)	25th Driest	Driest since: 1936	1956
Oct 1934–Sep 1937 36-Month	49.61" (1,260.09mm)	54.27" (1,378.46mm)	-4.66" (-118.37mm)	101st Wettest	Wettest since: 1931	1997
Oct 1933–Sep 1937 48-Month	62.80" (1,595.12mm)	72.31" (1,836.67mm)	-9.51" (-241.55mm)	7th Driest	Driest since: 1934	1956
Oct 1933–Sep 1937 48-Month	62.80" (1,595.12mm)	72.31" (1,836.67mm)	-9.51" (-241.55mm)	118th Wettest	Wettest since: 1936	1998
Oct 1932–Sep 1937 60-Month	79.68" (2,023.87mm)	90.33" (2,294.38mm)	-10.65" (-270.51mm)	7th Driest	Driest since: 1934	2022
Oct 1932–Sep 1937 60-Month	79.68" (2,023.87mm)	90.33" (2,294.38mm)	-10.65" (-270.51mm)	117th Wettest	Wettest since: 1936	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings