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, May 2003

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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
May 2003 1-Month	1.75" (44.45mm)	2.02" (51.31mm)	-0.27" (-6.86mm)	53rd Driest	Driest since: 2002	1974
	1.75" (44.45mm)	2.02" (51.31mm)	-0.27" (-6.86mm)	76th Wettest	Wettest since: 2001	2015
	Ties: 1929
Apr–May 2003 2-Month	3.32" (84.33mm)	3.86" (98.04mm)	-0.54" (-13.71mm)	46th Driest	Driest since: 2002	2002
Apr–May 2003 2-Month	3.32" (84.33mm)	3.86" (98.04mm)	-0.54" (-13.71mm)	83rd Wettest	Wettest since: 2001	1957
Mar–May 2003 3-Month	5.51" (139.95mm)	5.37" (136.40mm)	0.14" (3.55mm)	76th Driest	Driest since: 2002	2002
Mar–May 2003 3-Month	5.51" (139.95mm)	5.37" (136.40mm)	0.14" (3.55mm)	53rd Wettest	Wettest since: 2001	1957
Feb–May 2003 4-Month	7.00" (177.80mm)	6.46" (164.08mm)	0.54" (13.72mm)	91st Driest	Driest since: 2002	2002
	7.00" (177.80mm)	6.46" (164.08mm)	0.54" (13.72mm)	38th Wettest	Wettest since: 1999	1905
	Ties: 2011
Jan–May 2003 5-Month	7.44" (188.98mm)	7.52" (191.01mm)	-0.08" (-2.03mm)	74th Driest	Driest since: 2002	2002
	7.44" (188.98mm)	7.52" (191.01mm)	-0.08" (-2.03mm)	55th Wettest	Wettest since: 2001	1957
	Ties: 1981
Dec 2002–May 2003 6-Month	8.08" (205.23mm)	8.60" (218.44mm)	-0.52" (-13.21mm)	52nd Driest	Driest since: 2002	2002
Dec 2002–May 2003 6-Month	8.08" (205.23mm)	8.60" (218.44mm)	-0.52" (-13.21mm)	76th Wettest	Wettest since: 2001	1957
Nov 2002–May 2003 7-Month	9.06" (230.12mm)	9.66" (245.36mm)	-0.60" (-15.24mm)	54th Driest	Driest since: 2002	2002
Nov 2002–May 2003 7-Month	9.06" (230.12mm)	9.66" (245.36mm)	-0.60" (-15.24mm)	74th Wettest	Wettest since: 2001	1957
Oct 2002–May 2003 8-Month	10.68" (271.27mm)	11.00" (279.40mm)	-0.32" (-8.13mm)	58th Driest	Driest since: 2002	2002
Oct 2002–May 2003 8-Month	10.68" (271.27mm)	11.00" (279.40mm)	-0.32" (-8.13mm)	70th Wettest	Wettest since: 2001	1995
Sep 2002–May 2003 9-Month	12.78" (324.61mm)	12.43" (315.72mm)	0.35" (8.89mm)	76th Driest	Driest since: 2002	2002
Sep 2002–May 2003 9-Month	12.78" (324.61mm)	12.43" (315.72mm)	0.35" (8.89mm)	52nd Wettest	Wettest since: 1999	1942
Aug 2002–May 2003 10-Month	14.27" (362.46mm)	14.44" (366.78mm)	-0.17" (-4.32mm)	61st Driest	Driest since: 2002	2002
Aug 2002–May 2003 10-Month	14.27" (362.46mm)	14.44" (366.78mm)	-0.17" (-4.32mm)	67th Wettest	Wettest since: 2001	1942
Jul 2002–May 2003 11-Month	15.29" (388.37mm)	16.54" (420.12mm)	-1.25" (-31.75mm)	44th Driest	Driest since: 2002	2002
Jul 2002–May 2003 11-Month	15.29" (388.37mm)	16.54" (420.12mm)	-1.25" (-31.75mm)	84th Wettest	Wettest since: 2001	1942
Jun 2002–May 2003 12-Month	16.16" (410.46mm)	18.08" (459.23mm)	-1.92" (-48.77mm)	36th Driest	Driest since: 2002	2002
Jun 2002–May 2003 12-Month	16.16" (410.46mm)	18.08" (459.23mm)	-1.92" (-48.77mm)	92nd Wettest	Wettest since: 2001	1942
Dec 2001–May 2003 18-Month	19.94" (506.48mm)	26.70" (678.18mm)	-6.76" (-171.70mm)	2nd Driest	Driest to Date	2013
Dec 2001–May 2003 18-Month	19.94" (506.48mm)	26.70" (678.18mm)	-6.76" (-171.70mm)	125th Wettest	Wettest since: 2002	1942
Jun 2001–May 2003 24-Month	28.18" (715.77mm)	36.18" (918.97mm)	-8.00" (-203.20mm)	2nd Driest	Driest since: 1902	1902
Jun 2001–May 2003 24-Month	28.18" (715.77mm)	36.18" (918.97mm)	-8.00" (-203.20mm)	125th Wettest	Wettest since: 2002	1942
Jun 2000–May 2003 36-Month	45.50" (1,155.70mm)	54.21" (1,376.93mm)	-8.71" (-221.23mm)	6th Driest	Driest since: 1956	2022
Jun 2000–May 2003 36-Month	45.50" (1,155.70mm)	54.21" (1,376.93mm)	-8.71" (-221.23mm)	120th Wettest	Wettest since: 2002	1943
Jun 1999–May 2003 48-Month	63.57" (1,614.68mm)	72.23" (1,834.64mm)	-8.66" (-219.96mm)	10th Driest	Driest since: 1977	1956
Jun 1999–May 2003 48-Month	63.57" (1,614.68mm)	72.23" (1,834.64mm)	-8.66" (-219.96mm)	115th Wettest	Wettest since: 2002	1944
Jun 1998–May 2003 60-Month	85.25" (2,165.35mm)	90.24" (2,292.10mm)	-4.99" (-126.75mm)	29th Driest	Driest since: 1979	2022
Jun 1998–May 2003 60-Month	85.25" (2,165.35mm)	90.24" (2,292.10mm)	-4.99" (-126.75mm)	95th Wettest	Wettest since: 2002	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 25, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings