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 1957

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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 1957 1-Month	0.50" (12.70mm)	1.43" (36.32mm)	-0.93" (-23.62mm)	6th Driest	Driest since: 1956	1956
	0.50" (12.70mm)	1.43" (36.32mm)	-0.93" (-23.62mm)	123rd Wettest	Wettest since: 1955	2013
	Ties: 1928
Aug–Sep 1957 2-Month	3.15" (80.01mm)	3.46" (87.88mm)	-0.31" (-7.87mm)	52nd Driest	Driest since: 1956	1944
Aug–Sep 1957 2-Month	3.15" (80.01mm)	3.46" (87.88mm)	-0.31" (-7.87mm)	77th Wettest	Wettest since: 1955	2013
Jul–Sep 1957 3-Month	6.11" (155.19mm)	5.56" (141.22mm)	0.55" (13.97mm)	86th Driest	Driest since: 1956	1900
	6.11" (155.19mm)	5.56" (141.22mm)	0.55" (13.97mm)	43rd Wettest	Wettest since: 1945	2013
	Ties: 1907
Jun–Sep 1957 4-Month	7.91" (200.91mm)	7.10" (180.34mm)	0.81" (20.57mm)	92nd Driest	Driest since: 1956	1924
Jun–Sep 1957 4-Month	7.91" (200.91mm)	7.10" (180.34mm)	0.81" (20.57mm)	37th Wettest	Wettest since: 1949	1965
May–Sep 1957 5-Month	12.27" (311.66mm)	9.12" (231.65mm)	3.15" (80.01mm)	124th Driest	Driest since: 1956	1939
May–Sep 1957 5-Month	12.27" (311.66mm)	9.12" (231.65mm)	3.15" (80.01mm)	5th Wettest	Wettest since: 1941	1965
Apr–Sep 1957 6-Month	15.89" (403.61mm)	10.96" (278.38mm)	4.93" (125.23mm)	127th Driest	Driest since: 1956	1939
Apr–Sep 1957 6-Month	15.89" (403.61mm)	10.96" (278.38mm)	4.93" (125.23mm)	2nd Wettest	Wettest to Date	1999
Mar–Sep 1957 7-Month	17.48" (443.99mm)	12.47" (316.74mm)	5.01" (127.25mm)	127th Driest	Driest since: 1956	2002
Mar–Sep 1957 7-Month	17.48" (443.99mm)	12.47" (316.74mm)	5.01" (127.25mm)	2nd Wettest	Wettest since: 1941	1941
Feb–Sep 1957 8-Month	18.30" (464.82mm)	13.56" (344.42mm)	4.74" (120.40mm)	126th Driest	Driest since: 1956	2002
Feb–Sep 1957 8-Month	18.30" (464.82mm)	13.56" (344.42mm)	4.74" (120.40mm)	3rd Wettest	Wettest since: 1941	1941
Jan–Sep 1957 9-Month	20.74" (526.80mm)	14.62" (371.35mm)	6.12" (155.45mm)	128th Driest	Driest since: 1956	2002
Jan–Sep 1957 9-Month	20.74" (526.80mm)	14.62" (371.35mm)	6.12" (155.45mm)	1st Wettest	Wettest to Date	1957
Dec 1956–Sep 1957 10-Month	21.74" (552.20mm)	15.70" (398.78mm)	6.04" (153.42mm)	127th Driest	Driest since: 1956	2002
Dec 1956–Sep 1957 10-Month	21.74" (552.20mm)	15.70" (398.78mm)	6.04" (153.42mm)	1st Wettest	Wettest to Date	1957
Nov 1956–Sep 1957 11-Month	22.82" (579.63mm)	16.76" (425.70mm)	6.06" (153.93mm)	126th Driest	Driest since: 1956	2002
Nov 1956–Sep 1957 11-Month	22.82" (579.63mm)	16.76" (425.70mm)	6.06" (153.93mm)	2nd Wettest	Wettest since: 1941	1941
Oct 1956–Sep 1957 12-Month	23.56" (598.42mm)	18.10" (459.74mm)	5.46" (138.68mm)	125th Driest	Driest since: 1956	2002
Oct 1956–Sep 1957 12-Month	23.56" (598.42mm)	18.10" (459.74mm)	5.46" (138.68mm)	3rd Wettest	Wettest since: 1941	1995
Apr 1956–Sep 1957 18-Month	30.68" (779.27mm)	29.08" (738.63mm)	1.60" (40.64mm)	91st Driest	Driest since: 1956	2002
Apr 1956–Sep 1957 18-Month	30.68" (779.27mm)	29.08" (738.63mm)	1.60" (40.64mm)	37th Wettest	Wettest since: 1948	1942
Oct 1955–Sep 1957 24-Month	37.00" (939.80mm)	36.22" (919.99mm)	0.78" (19.81mm)	77th Driest	Driest since: 1956	2003
Oct 1955–Sep 1957 24-Month	37.00" (939.80mm)	36.22" (919.99mm)	0.78" (19.81mm)	50th Wettest	Wettest since: 1949	1942
Oct 1954–Sep 1957 36-Month	52.61" (1,336.29mm)	54.27" (1,378.46mm)	-1.66" (-42.17mm)	48th Driest	Driest since: 1956	1956
Oct 1954–Sep 1957 36-Month	52.61" (1,336.29mm)	54.27" (1,378.46mm)	-1.66" (-42.17mm)	78th Wettest	Wettest since: 1950	1997
Oct 1953–Sep 1957 48-Month	67.47" (1,713.74mm)	72.31" (1,836.67mm)	-4.84" (-122.93mm)	28th Driest	Driest since: 1956	1956
Oct 1953–Sep 1957 48-Month	67.47" (1,713.74mm)	72.31" (1,836.67mm)	-4.84" (-122.93mm)	97th Wettest	Wettest since: 1952	1998
Oct 1952–Sep 1957 60-Month	82.34" (2,091.44mm)	90.33" (2,294.38mm)	-7.99" (-202.94mm)	18th Driest	Driest since: 1956	2022
Oct 1952–Sep 1957 60-Month	82.34" (2,091.44mm)	90.33" (2,294.38mm)	-7.99" (-202.94mm)	106th Wettest	Wettest since: 1953	1999

Citing This Page

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