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 1909

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1909 1-Month	1.28" (32.51mm)	2.02" (51.31mm)	-0.74" (-18.80mm)	25th Driest	Driest since: 1899	1974
May 1909 1-Month	1.28" (32.51mm)	2.02" (51.31mm)	-0.74" (-18.80mm)	104th Wettest	Wettest since: 1908	2015
Apr–May 1909 2-Month	2.98" (75.69mm)	3.86" (98.04mm)	-0.88" (-22.35mm)	33rd Driest	Driest since: 1899	2002
Apr–May 1909 2-Month	2.98" (75.69mm)	3.86" (98.04mm)	-0.88" (-22.35mm)	96th Wettest	Wettest since: 1908	1957
Mar–May 1909 3-Month	4.43" (112.52mm)	5.37" (136.40mm)	-0.94" (-23.88mm)	32nd Driest	Driest since: 1908	2002
Mar–May 1909 3-Month	4.43" (112.52mm)	5.37" (136.40mm)	-0.94" (-23.88mm)	97th Wettest	Wettest since: 1907	1957
Feb–May 1909 4-Month	5.87" (149.10mm)	6.46" (164.08mm)	-0.59" (-14.98mm)	46th Driest	Driest since: 1908	2002
Feb–May 1909 4-Month	5.87" (149.10mm)	6.46" (164.08mm)	-0.59" (-14.98mm)	83rd Wettest	Wettest since: 1907	1905
Jan–May 1909 5-Month	7.69" (195.33mm)	7.52" (191.01mm)	0.17" (4.32mm)	79th Driest	Driest since: 1908	2002
Jan–May 1909 5-Month	7.69" (195.33mm)	7.52" (191.01mm)	0.17" (4.32mm)	50th Wettest	Wettest since: 1906	1957
Dec 1908–May 1909 6-Month	9.35" (237.49mm)	8.60" (218.44mm)	0.75" (19.05mm)	94th Driest	Driest since: 1908	2002
	9.35" (237.49mm)	8.60" (218.44mm)	0.75" (19.05mm)	34th Wettest	Wettest since: 1906	1957
	Ties: 1916
Nov 1908–May 1909 7-Month	10.69" (271.53mm)	9.66" (245.36mm)	1.03" (26.17mm)	94th Driest	Driest since: 1908	2002
Nov 1908–May 1909 7-Month	10.69" (271.53mm)	9.66" (245.36mm)	1.03" (26.17mm)	34th Wettest	Wettest since: 1906	1957
Oct 1908–May 1909 8-Month	13.27" (337.06mm)	11.00" (279.40mm)	2.27" (57.66mm)	108th Driest	Driest since: 1908	2002
Oct 1908–May 1909 8-Month	13.27" (337.06mm)	11.00" (279.40mm)	2.27" (57.66mm)	20th Wettest	Wettest since: 1906	1995
Sep 1908–May 1909 9-Month	14.01" (355.85mm)	12.43" (315.72mm)	1.58" (40.13mm)	99th Driest	Driest since: 1908	2002
Sep 1908–May 1909 9-Month	14.01" (355.85mm)	12.43" (315.72mm)	1.58" (40.13mm)	29th Wettest	Wettest since: 1907	1942
Aug 1908–May 1909 10-Month	16.51" (419.35mm)	14.44" (366.78mm)	2.07" (52.57mm)	104th Driest	Driest since: 1908	2002
Aug 1908–May 1909 10-Month	16.51" (419.35mm)	14.44" (366.78mm)	2.07" (52.57mm)	24th Wettest	Wettest since: 1905	1942
Jul 1908–May 1909 11-Month	18.91" (480.31mm)	16.54" (420.12mm)	2.37" (60.19mm)	105th Driest	Driest since: 1908	2002
Jul 1908–May 1909 11-Month	18.91" (480.31mm)	16.54" (420.12mm)	2.37" (60.19mm)	23rd Wettest	Wettest since: 1905	1942
Jun 1908–May 1909 12-Month	19.96" (506.98mm)	18.08" (459.23mm)	1.88" (47.75mm)	99th Driest	Driest since: 1908	2002
	19.96" (506.98mm)	18.08" (459.23mm)	1.88" (47.75mm)	29th Wettest	Wettest since: 1905	1942
	Ties: 1898, 1970
Dec 1907–May 1909 18-Month	27.44" (696.98mm)	26.70" (678.18mm)	0.74" (18.80mm)	78th Driest	Driest since: 1908	2013
Dec 1907–May 1909 18-Month	27.44" (696.98mm)	26.70" (678.18mm)	0.74" (18.80mm)	49th Wettest	Wettest since: 1907	1942
Jun 1907–May 1909 24-Month	36.21" (919.73mm)	36.18" (918.97mm)	0.03" (0.76mm)	69th Driest	Driest since: 1908	1902
Jun 1907–May 1909 24-Month	36.21" (919.73mm)	36.18" (918.97mm)	0.03" (0.76mm)	58th Wettest	Wettest since: 1907	1942
Jun 1906–May 1909 36-Month	55.49" (1,409.45mm)	54.21" (1,376.93mm)	1.28" (32.52mm)	83rd Driest	Driest since: 1908	2022
	55.49" (1,409.45mm)	54.21" (1,376.93mm)	1.28" (32.52mm)	43rd Wettest	Wettest since: 1907	1943
	Ties: 2015
Jun 1905–May 1909 48-Month	74.67" (1,896.62mm)	72.23" (1,834.64mm)	2.44" (61.98mm)	85th Driest	Driest since: 1905	1956
Jun 1905–May 1909 48-Month	74.67" (1,896.62mm)	72.23" (1,834.64mm)	2.44" (61.98mm)	40th Wettest	Wettest since: 1908	1944
Jun 1904–May 1909 60-Month	98.03" (2,489.96mm)	90.24" (2,292.10mm)	7.79" (197.86mm)	113th Driest	Driest since: 1908	2022
Jun 1904–May 1909 60-Month	98.03" (2,489.96mm)	90.24" (2,292.10mm)	7.79" (197.86mm)	11th Wettest	Wettest to Date	1987

Citing This Page

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