Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Southwest Climate Region

Precipitation Rankings, May 1970

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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 1970 1-Month	0.41" (10.41mm)	1.11" (28.19mm)	-0.70" (-17.78mm)	7th Driest	Driest since: 1927	1974
	0.41" (10.41mm)	1.11" (28.19mm)	-0.70" (-17.78mm)	122nd Wettest	Wettest since: 1969	2015
	Ties: 2020
Apr–May 1970 2-Month	1.26" (32.00mm)	2.17" (55.12mm)	-0.91" (-23.12mm)	17th Driest	Driest since: 1966	2002
	1.26" (32.00mm)	2.17" (55.12mm)	-0.91" (-23.12mm)	112th Wettest	Wettest since: 1969	1941
	Ties: 1910
Mar–May 1970 3-Month	2.99" (75.95mm)	3.33" (84.58mm)	-0.34" (-8.63mm)	53rd Driest	Driest since: 1969	2002
Mar–May 1970 3-Month	2.99" (75.95mm)	3.33" (84.58mm)	-0.34" (-8.63mm)	76th Wettest	Wettest since: 1968	1941
Feb–May 1970 4-Month	3.39" (86.11mm)	4.33" (109.98mm)	-0.94" (-23.87mm)	30th Driest	Driest since: 1967	2002
	3.39" (86.11mm)	4.33" (109.98mm)	-0.94" (-23.87mm)	99th Wettest	Wettest since: 1969	1905
	Ties: 1933, 1939
Jan–May 1970 5-Month	3.80" (96.52mm)	5.31" (134.87mm)	-1.51" (-38.35mm)	23rd Driest	Driest since: 1967	1972
Jan–May 1970 5-Month	3.80" (96.52mm)	5.31" (134.87mm)	-1.51" (-38.35mm)	106th Wettest	Wettest since: 1969	1905
Dec 1969–May 1970 6-Month	4.62" (117.35mm)	6.32" (160.53mm)	-1.70" (-43.18mm)	22nd Driest	Driest since: 1964	2002
Dec 1969–May 1970 6-Month	4.62" (117.35mm)	6.32" (160.53mm)	-1.70" (-43.18mm)	106th Wettest	Wettest since: 1969	1905
Nov 1969–May 1970 7-Month	5.34" (135.64mm)	7.21" (183.13mm)	-1.87" (-47.49mm)	24th Driest	Driest since: 1963	2002
Nov 1969–May 1970 7-Month	5.34" (135.64mm)	7.21" (183.13mm)	-1.87" (-47.49mm)	104th Wettest	Wettest since: 1969	1941
Oct 1969–May 1970 8-Month	7.56" (192.02mm)	8.34" (211.84mm)	-0.78" (-19.82mm)	47th Driest	Driest since: 1967	2002
Oct 1969–May 1970 8-Month	7.56" (192.02mm)	8.34" (211.84mm)	-0.78" (-19.82mm)	81st Wettest	Wettest since: 1969	1941
Sep 1969–May 1970 9-Month	9.11" (231.39mm)	9.71" (246.63mm)	-0.60" (-15.24mm)	55th Driest	Driest since: 1969	2002
Sep 1969–May 1970 9-Month	9.11" (231.39mm)	9.71" (246.63mm)	-0.60" (-15.24mm)	73rd Wettest	Wettest since: 1968	1941
Aug 1969–May 1970 10-Month	11.11" (282.19mm)	11.72" (297.69mm)	-0.61" (-15.50mm)	58th Driest	Driest since: 1969	2002
	11.11" (282.19mm)	11.72" (297.69mm)	-0.61" (-15.50mm)	70th Wettest	Wettest since: 1968	1941
	Ties: 1940
Jul 1969–May 1970 11-Month	13.15" (334.01mm)	13.59" (345.19mm)	-0.44" (-11.18mm)	61st Driest	Driest since: 1967	2021
	13.15" (334.01mm)	13.59" (345.19mm)	-0.44" (-11.18mm)	67th Wettest	Wettest since: 1969	1941
	Ties: 1938
Jun 1969–May 1970 12-Month	14.74" (374.40mm)	14.53" (369.06mm)	0.21" (5.34mm)	73rd Driest	Driest since: 1969	2021
Jun 1969–May 1970 12-Month	14.74" (374.40mm)	14.53" (369.06mm)	0.21" (5.34mm)	55th Wettest	Wettest since: 1968	1905
Dec 1968–May 1970 18-Month	21.29" (540.77mm)	20.86" (529.84mm)	0.43" (10.93mm)	84th Driest	Driest since: 1969	2021
Dec 1968–May 1970 18-Month	21.29" (540.77mm)	20.86" (529.84mm)	0.43" (10.93mm)	43rd Wettest	Wettest since: 1966	1942
Jun 1968–May 1970 24-Month	28.61" (726.69mm)	29.05" (737.87mm)	-0.44" (-11.18mm)	67th Driest	Driest since: 1967	2021
Jun 1968–May 1970 24-Month	28.61" (726.69mm)	29.05" (737.87mm)	-0.44" (-11.18mm)	60th Wettest	Wettest since: 1969	1942
Jun 1967–May 1970 36-Month	44.72" (1,135.89mm)	43.54" (1,105.92mm)	1.18" (29.97mm)	88th Driest	Driest since: 1969	2022
Jun 1967–May 1970 36-Month	44.72" (1,135.89mm)	43.54" (1,105.92mm)	1.18" (29.97mm)	38th Wettest	Wettest since: 1944	1907
Jun 1966–May 1970 48-Month	57.45" (1,459.23mm)	58.01" (1,473.45mm)	-0.56" (-14.22mm)	62nd Driest	Driest since: 1967	1904
Jun 1966–May 1970 48-Month	57.45" (1,459.23mm)	58.01" (1,473.45mm)	-0.56" (-14.22mm)	63rd Wettest	Wettest since: 1969	1986
Jun 1965–May 1970 60-Month	72.93" (1,852.42mm)	72.48" (1,840.99mm)	0.45" (11.43mm)	69th Driest	Driest since: 1969	1957
Jun 1965–May 1970 60-Month	72.93" (1,852.42mm)	72.48" (1,840.99mm)	0.45" (11.43mm)	55th Wettest	Wettest since: 1945	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on June 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings