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 1931

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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 1931 1-Month	1.71" (43.43mm)	2.02" (51.31mm)	-0.31" (-7.88mm)	51st Driest	Driest since: 1927	1974
May 1931 1-Month	1.71" (43.43mm)	2.02" (51.31mm)	-0.31" (-7.88mm)	78th Wettest	Wettest since: 1930	2015
Apr–May 1931 2-Month	3.26" (82.80mm)	3.86" (98.04mm)	-0.60" (-15.24mm)	42nd Driest	Driest since: 1927	2002
Apr–May 1931 2-Month	3.26" (82.80mm)	3.86" (98.04mm)	-0.60" (-15.24mm)	87th Wettest	Wettest since: 1930	1957
Mar–May 1931 3-Month	4.60" (116.84mm)	5.37" (136.40mm)	-0.77" (-19.56mm)	40th Driest	Driest since: 1927	2002
Mar–May 1931 3-Month	4.60" (116.84mm)	5.37" (136.40mm)	-0.77" (-19.56mm)	89th Wettest	Wettest since: 1930	1957
Feb–May 1931 4-Month	6.07" (154.18mm)	6.46" (164.08mm)	-0.39" (-9.90mm)	56th Driest	Driest since: 1930	2002
Feb–May 1931 4-Month	6.07" (154.18mm)	6.46" (164.08mm)	-0.39" (-9.90mm)	73rd Wettest	Wettest since: 1929	1905
Jan–May 1931 5-Month	6.24" (158.50mm)	7.52" (191.01mm)	-1.28" (-32.51mm)	28th Driest	Driest since: 1925	2002
Jan–May 1931 5-Month	6.24" (158.50mm)	7.52" (191.01mm)	-1.28" (-32.51mm)	101st Wettest	Wettest since: 1930	1957
Dec 1930–May 1931 6-Month	6.57" (166.88mm)	8.60" (218.44mm)	-2.03" (-51.56mm)	13th Driest	Driest since: 1913	2002
	6.57" (166.88mm)	8.60" (218.44mm)	-2.03" (-51.56mm)	115th Wettest	Wettest since: 1930	1957
	Ties: 1904
Nov 1930–May 1931 7-Month	8.19" (208.03mm)	9.66" (245.36mm)	-1.47" (-37.33mm)	26th Driest	Driest since: 1925	2002
Nov 1930–May 1931 7-Month	8.19" (208.03mm)	9.66" (245.36mm)	-1.47" (-37.33mm)	102nd Wettest	Wettest since: 1930	1957
Oct 1930–May 1931 8-Month	9.42" (239.27mm)	11.00" (279.40mm)	-1.58" (-40.13mm)	32nd Driest	Driest since: 1925	2002
Oct 1930–May 1931 8-Month	9.42" (239.27mm)	11.00" (279.40mm)	-1.58" (-40.13mm)	96th Wettest	Wettest since: 1930	1995
Sep 1930–May 1931 9-Month	10.56" (268.22mm)	12.43" (315.72mm)	-1.87" (-47.50mm)	29th Driest	Driest since: 1925	2002
Sep 1930–May 1931 9-Month	10.56" (268.22mm)	12.43" (315.72mm)	-1.87" (-47.50mm)	99th Wettest	Wettest since: 1930	1942
Aug 1930–May 1931 10-Month	13.50" (342.90mm)	14.44" (366.78mm)	-0.94" (-23.88mm)	49th Driest	Driest since: 1927	2002
Aug 1930–May 1931 10-Month	13.50" (342.90mm)	14.44" (366.78mm)	-0.94" (-23.88mm)	79th Wettest	Wettest since: 1930	1942
Jul 1930–May 1931 11-Month	16.64" (422.66mm)	16.54" (420.12mm)	0.10" (2.54mm)	66th Driest	Driest since: 1929	2002
Jul 1930–May 1931 11-Month	16.64" (422.66mm)	16.54" (420.12mm)	0.10" (2.54mm)	62nd Wettest	Wettest since: 1930	1942
Jun 1930–May 1931 12-Month	17.47" (443.74mm)	18.08" (459.23mm)	-0.61" (-15.49mm)	55th Driest	Driest since: 1927	2002
Jun 1930–May 1931 12-Month	17.47" (443.74mm)	18.08" (459.23mm)	-0.61" (-15.49mm)	73rd Wettest	Wettest since: 1930	1942
Dec 1929–May 1931 18-Month	24.77" (629.16mm)	26.70" (678.18mm)	-1.93" (-49.02mm)	42nd Driest	Driest since: 1925	2013
Dec 1929–May 1931 18-Month	24.77" (629.16mm)	26.70" (678.18mm)	-1.93" (-49.02mm)	85th Wettest	Wettest since: 1930	1942
Jun 1929–May 1931 24-Month	36.02" (914.91mm)	36.18" (918.97mm)	-0.16" (-4.06mm)	65th Driest	Driest since: 1926	1902
Jun 1929–May 1931 24-Month	36.02" (914.91mm)	36.18" (918.97mm)	-0.16" (-4.06mm)	62nd Wettest	Wettest since: 1930	1942
Jun 1928–May 1931 36-Month	53.98" (1,371.09mm)	54.21" (1,376.93mm)	-0.23" (-5.84mm)	59th Driest	Driest since: 1927	2022
Jun 1928–May 1931 36-Month	53.98" (1,371.09mm)	54.21" (1,376.93mm)	-0.23" (-5.84mm)	67th Wettest	Wettest since: 1930	1943
Jun 1927–May 1931 48-Month	75.45" (1,916.43mm)	72.23" (1,834.64mm)	3.22" (81.79mm)	92nd Driest	Driest since: 1930	1956
Jun 1927–May 1931 48-Month	75.45" (1,916.43mm)	72.23" (1,834.64mm)	3.22" (81.79mm)	33rd Wettest	Wettest since: 1929	1944
Jun 1926–May 1931 60-Month	92.01" (2,337.05mm)	90.24" (2,292.10mm)	1.77" (44.95mm)	78th Driest	Driest since: 1929	2022
Jun 1926–May 1931 60-Month	92.01" (2,337.05mm)	90.24" (2,292.10mm)	1.77" (44.95mm)	46th Wettest	Wettest since: 1930	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings