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 1997

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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 1997 1-Month	2.43" (61.72mm)	1.43" (36.32mm)	1.00" (25.40mm)	118th Driest	Driest since: 1996	1956
September 1997 1-Month	2.43" (61.72mm)	1.43" (36.32mm)	1.00" (25.40mm)	11th Wettest	Wettest since: 1982	2013
Aug–Sep 1997 2-Month	5.88" (149.35mm)	3.46" (87.88mm)	2.42" (61.47mm)	127th Driest	Driest since: 1996	1944
Aug–Sep 1997 2-Month	5.88" (149.35mm)	3.46" (87.88mm)	2.42" (61.47mm)	2nd Wettest	Wettest to Date	2013
Jul–Sep 1997 3-Month	8.02" (203.71mm)	5.56" (141.22mm)	2.46" (62.49mm)	124th Driest	Driest since: 1996	1900
Jul–Sep 1997 3-Month	8.02" (203.71mm)	5.56" (141.22mm)	2.46" (62.49mm)	5th Wettest	Wettest since: 1965	2013
Jun–Sep 1997 4-Month	10.23" (259.84mm)	7.10" (180.34mm)	3.13" (79.50mm)	125th Driest	Driest since: 1996	1924
Jun–Sep 1997 4-Month	10.23" (259.84mm)	7.10" (180.34mm)	3.13" (79.50mm)	4th Wettest	Wettest since: 1965	1965
May–Sep 1997 5-Month	12.14" (308.36mm)	9.12" (231.65mm)	3.02" (76.71mm)	123rd Driest	Driest since: 1996	1939
May–Sep 1997 5-Month	12.14" (308.36mm)	9.12" (231.65mm)	3.02" (76.71mm)	6th Wettest	Wettest since: 1995	1965
Apr–Sep 1997 6-Month	14.59" (370.59mm)	10.96" (278.38mm)	3.63" (92.21mm)	122nd Driest	Driest since: 1996	1939
Apr–Sep 1997 6-Month	14.59" (370.59mm)	10.96" (278.38mm)	3.63" (92.21mm)	7th Wettest	Wettest since: 1995	1999
Mar–Sep 1997 7-Month	15.10" (383.54mm)	12.47" (316.74mm)	2.63" (66.80mm)	118th Driest	Driest since: 1996	2002
Mar–Sep 1997 7-Month	15.10" (383.54mm)	12.47" (316.74mm)	2.63" (66.80mm)	11th Wettest	Wettest since: 1995	1941
Feb–Sep 1997 8-Month	16.16" (410.46mm)	13.56" (344.42mm)	2.60" (66.04mm)	117th Driest	Driest since: 1996	2002
Feb–Sep 1997 8-Month	16.16" (410.46mm)	13.56" (344.42mm)	2.60" (66.04mm)	12th Wettest	Wettest since: 1995	1941
Jan–Sep 1997 9-Month	17.90" (454.66mm)	14.62" (371.35mm)	3.28" (83.31mm)	119th Driest	Driest since: 1996	2002
Jan–Sep 1997 9-Month	17.90" (454.66mm)	14.62" (371.35mm)	3.28" (83.31mm)	10th Wettest	Wettest since: 1995	1957
Dec 1996–Sep 1997 10-Month	19.11" (485.39mm)	15.70" (398.78mm)	3.41" (86.61mm)	119th Driest	Driest since: 1996	2002
Dec 1996–Sep 1997 10-Month	19.11" (485.39mm)	15.70" (398.78mm)	3.41" (86.61mm)	9th Wettest	Wettest since: 1995	1957
Nov 1996–Sep 1997 11-Month	20.53" (521.46mm)	16.76" (425.70mm)	3.77" (95.76mm)	120th Driest	Driest since: 1996	2002
Nov 1996–Sep 1997 11-Month	20.53" (521.46mm)	16.76" (425.70mm)	3.77" (95.76mm)	8th Wettest	Wettest since: 1995	1941
Oct 1996–Sep 1997 12-Month	22.16" (562.86mm)	18.10" (459.74mm)	4.06" (103.12mm)	122nd Driest	Driest since: 1996	2002
Oct 1996–Sep 1997 12-Month	22.16" (562.86mm)	18.10" (459.74mm)	4.06" (103.12mm)	6th Wettest	Wettest since: 1995	1995
Apr 1996–Sep 1997 18-Month	33.60" (853.44mm)	29.08" (738.63mm)	4.52" (114.81mm)	122nd Driest	Driest since: 1996	2002
Apr 1996–Sep 1997 18-Month	33.60" (853.44mm)	29.08" (738.63mm)	4.52" (114.81mm)	6th Wettest	Wettest since: 1995	1942
Oct 1995–Sep 1997 24-Month	39.87" (1,012.70mm)	36.22" (919.99mm)	3.65" (92.71mm)	108th Driest	Driest since: 1994	2003
Oct 1995–Sep 1997 24-Month	39.87" (1,012.70mm)	36.22" (919.99mm)	3.65" (92.71mm)	19th Wettest	Wettest since: 1996	1942
Oct 1994–Sep 1997 36-Month	63.85" (1,621.79mm)	54.27" (1,378.46mm)	9.58" (243.33mm)	125th Driest	Driest since: 1996	1956
Oct 1994–Sep 1997 36-Month	63.85" (1,621.79mm)	54.27" (1,378.46mm)	9.58" (243.33mm)	1st Wettest	Wettest to Date	1997
Oct 1993–Sep 1997 48-Month	80.63" (2,048.00mm)	72.31" (1,836.67mm)	8.32" (211.33mm)	118th Driest	Driest since: 1996	1956
Oct 1993–Sep 1997 48-Month	80.63" (2,048.00mm)	72.31" (1,836.67mm)	8.32" (211.33mm)	7th Wettest	Wettest since: 1987	1998
Oct 1992–Sep 1997 60-Month	100.18" (2,544.57mm)	90.33" (2,294.38mm)	9.85" (250.19mm)	119th Driest	Driest since: 1996	2022
Oct 1992–Sep 1997 60-Month	100.18" (2,544.57mm)	90.33" (2,294.38mm)	9.85" (250.19mm)	5th Wettest	Wettest since: 1987	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