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 1970

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1970 1-Month	0.84" (21.34mm)	2.02" (51.31mm)	-1.18" (-29.97mm)	7th Driest	Driest since: 1963	1974
May 1970 1-Month	0.84" (21.34mm)	2.02" (51.31mm)	-1.18" (-29.97mm)	122nd Wettest	Wettest since: 1969	2015
Apr–May 1970 2-Month	2.42" (61.47mm)	3.86" (98.04mm)	-1.44" (-36.57mm)	18th Driest	Driest since: 1966	2002
Apr–May 1970 2-Month	2.42" (61.47mm)	3.86" (98.04mm)	-1.44" (-36.57mm)	111th Wettest	Wettest since: 1969	1957
Mar–May 1970 3-Month	4.45" (113.03mm)	5.37" (136.40mm)	-0.92" (-23.37mm)	33rd Driest	Driest since: 1968	2002
Mar–May 1970 3-Month	4.45" (113.03mm)	5.37" (136.40mm)	-0.92" (-23.37mm)	96th Wettest	Wettest since: 1969	1957
Feb–May 1970 4-Month	4.78" (121.41mm)	6.46" (164.08mm)	-1.68" (-42.67mm)	19th Driest	Driest since: 1966	2002
Feb–May 1970 4-Month	4.78" (121.41mm)	6.46" (164.08mm)	-1.68" (-42.67mm)	110th Wettest	Wettest since: 1969	1905
Jan–May 1970 5-Month	5.41" (137.41mm)	7.52" (191.01mm)	-2.11" (-53.60mm)	11th Driest	Driest since: 1966	2002
Jan–May 1970 5-Month	5.41" (137.41mm)	7.52" (191.01mm)	-2.11" (-53.60mm)	118th Wettest	Wettest since: 1969	1957
Dec 1969–May 1970 6-Month	6.43" (163.32mm)	8.60" (218.44mm)	-2.17" (-55.12mm)	12th Driest	Driest since: 1966	2002
Dec 1969–May 1970 6-Month	6.43" (163.32mm)	8.60" (218.44mm)	-2.17" (-55.12mm)	116th Wettest	Wettest since: 1969	1957
Nov 1969–May 1970 7-Month	7.15" (181.61mm)	9.66" (245.36mm)	-2.51" (-63.75mm)	12th Driest	Driest since: 1966	2002
Nov 1969–May 1970 7-Month	7.15" (181.61mm)	9.66" (245.36mm)	-2.51" (-63.75mm)	116th Wettest	Wettest since: 1969	1957
Oct 1969–May 1970 8-Month	10.95" (278.13mm)	11.00" (279.40mm)	-0.05" (-1.27mm)	68th Driest	Driest since: 1969	2002
Oct 1969–May 1970 8-Month	10.95" (278.13mm)	11.00" (279.40mm)	-0.05" (-1.27mm)	60th Wettest	Wettest since: 1961	1995
Sep 1969–May 1970 9-Month	12.65" (321.31mm)	12.43" (315.72mm)	0.22" (5.59mm)	70th Driest	Driest since: 1969	2002
	12.65" (321.31mm)	12.43" (315.72mm)	0.22" (5.59mm)	58th Wettest	Wettest since: 1962	1942
	Ties: 2008
Aug 1969–May 1970 10-Month	14.61" (371.09mm)	14.44" (366.78mm)	0.17" (4.31mm)	66th Driest	Driest since: 1969	2002
Aug 1969–May 1970 10-Month	14.61" (371.09mm)	14.44" (366.78mm)	0.17" (4.31mm)	62nd Wettest	Wettest since: 1962	1942
Jul 1969–May 1970 11-Month	16.79" (426.47mm)	16.54" (420.12mm)	0.25" (6.35mm)	71st Driest	Driest since: 1969	2002
Jul 1969–May 1970 11-Month	16.79" (426.47mm)	16.54" (420.12mm)	0.25" (6.35mm)	57th Wettest	Wettest since: 1962	1942
Jun 1969–May 1970 12-Month	19.96" (506.98mm)	18.08" (459.23mm)	1.88" (47.75mm)	99th Driest	Driest since: 1969	2002
	19.96" (506.98mm)	18.08" (459.23mm)	1.88" (47.75mm)	29th Wettest	Wettest since: 1958	1942
	Ties: 1898, 1909
Dec 1968–May 1970 18-Month	28.30" (718.82mm)	26.70" (678.18mm)	1.60" (40.64mm)	94th Driest	Driest since: 1969	2013
Dec 1968–May 1970 18-Month	28.30" (718.82mm)	26.70" (678.18mm)	1.60" (40.64mm)	33rd Wettest	Wettest since: 1966	1942
Jun 1968–May 1970 24-Month	36.66" (931.16mm)	36.18" (918.97mm)	0.48" (12.19mm)	75th Driest	Driest since: 1969	1902
Jun 1968–May 1970 24-Month	36.66" (931.16mm)	36.18" (918.97mm)	0.48" (12.19mm)	52nd Wettest	Wettest since: 1958	1942
Jun 1967–May 1970 36-Month	55.24" (1,403.10mm)	54.21" (1,376.93mm)	1.03" (26.17mm)	79th Driest	Driest since: 1969	2022
Jun 1967–May 1970 36-Month	55.24" (1,403.10mm)	54.21" (1,376.93mm)	1.03" (26.17mm)	47th Wettest	Wettest since: 1959	1943
Jun 1966–May 1970 48-Month	72.07" (1,830.58mm)	72.23" (1,834.64mm)	-0.16" (-4.06mm)	62nd Driest	Driest since: 1969	1956
Jun 1966–May 1970 48-Month	72.07" (1,830.58mm)	72.23" (1,834.64mm)	-0.16" (-4.06mm)	63rd Wettest	Wettest since: 1960	1944
Jun 1965–May 1970 60-Month	91.57" (2,325.88mm)	90.24" (2,292.10mm)	1.33" (33.78mm)	74th Driest	Driest since: 1969	2022
Jun 1965–May 1970 60-Month	91.57" (2,325.88mm)	90.24" (2,292.10mm)	1.33" (33.78mm)	50th Wettest	Wettest since: 1952	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