Regional Rankings

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Month:

Region:

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 1918

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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 1918 1-Month	0.52" (13.21mm)	1.11" (28.19mm)	-0.59" (-14.98mm)	12th Driest	Driest since: 1913	1974
	0.52" (13.21mm)	1.11" (28.19mm)	-0.59" (-14.98mm)	117th Wettest	Wettest since: 1917	2015
	Ties: 2000
Apr–May 1918 2-Month	1.22" (30.99mm)	2.17" (55.12mm)	-0.95" (-24.13mm)	15th Driest	Driest since: 1899	2002
Apr–May 1918 2-Month	1.22" (30.99mm)	2.17" (55.12mm)	-0.95" (-24.13mm)	114th Wettest	Wettest since: 1917	1941
Mar–May 1918 3-Month	2.81" (71.37mm)	3.33" (84.58mm)	-0.52" (-13.21mm)	39th Driest	Driest since: 1913	2002
Mar–May 1918 3-Month	2.81" (71.37mm)	3.33" (84.58mm)	-0.52" (-13.21mm)	90th Wettest	Wettest since: 1917	1941
Feb–May 1918 4-Month	3.83" (97.28mm)	4.33" (109.98mm)	-0.50" (-12.70mm)	51st Driest	Driest since: 1916	2002
Feb–May 1918 4-Month	3.83" (97.28mm)	4.33" (109.98mm)	-0.50" (-12.70mm)	78th Wettest	Wettest since: 1917	1905
Jan–May 1918 5-Month	5.39" (136.91mm)	5.31" (134.87mm)	0.08" (2.04mm)	75th Driest	Driest since: 1913	1972
Jan–May 1918 5-Month	5.39" (136.91mm)	5.31" (134.87mm)	0.08" (2.04mm)	54th Wettest	Wettest since: 1917	1905
Dec 1917–May 1918 6-Month	5.56" (141.22mm)	6.32" (160.53mm)	-0.76" (-19.31mm)	45th Driest	Driest since: 1913	2002
Dec 1917–May 1918 6-Month	5.56" (141.22mm)	6.32" (160.53mm)	-0.76" (-19.31mm)	83rd Wettest	Wettest since: 1917	1905
Nov 1917–May 1918 7-Month	5.84" (148.34mm)	7.21" (183.13mm)	-1.37" (-34.79mm)	35th Driest	Driest since: 1913	2002
Nov 1917–May 1918 7-Month	5.84" (148.34mm)	7.21" (183.13mm)	-1.37" (-34.79mm)	93rd Wettest	Wettest since: 1917	1941
Oct 1917–May 1918 8-Month	6.02" (152.91mm)	8.34" (211.84mm)	-2.32" (-58.93mm)	18th Driest	Driest since: 1904	2002
	6.02" (152.91mm)	8.34" (211.84mm)	-2.32" (-58.93mm)	110th Wettest	Wettest since: 1917	1941
	Ties: 1951, 1972
Sep 1917–May 1918 9-Month	7.33" (186.18mm)	9.71" (246.63mm)	-2.38" (-60.45mm)	21st Driest	Driest since: 1904	2002
Sep 1917–May 1918 9-Month	7.33" (186.18mm)	9.71" (246.63mm)	-2.38" (-60.45mm)	107th Wettest	Wettest since: 1917	1941
Aug 1917–May 1918 10-Month	8.89" (225.81mm)	11.72" (297.69mm)	-2.83" (-71.88mm)	18th Driest	Driest since: 1904	2002
Aug 1917–May 1918 10-Month	8.89" (225.81mm)	11.72" (297.69mm)	-2.83" (-71.88mm)	110th Wettest	Wettest since: 1917	1941
Jul 1917–May 1918 11-Month	10.74" (272.80mm)	13.59" (345.19mm)	-2.85" (-72.39mm)	17th Driest	Driest since: 1904	2021
Jul 1917–May 1918 11-Month	10.74" (272.80mm)	13.59" (345.19mm)	-2.85" (-72.39mm)	111th Wettest	Wettest since: 1917	1941
Jun 1917–May 1918 12-Month	10.99" (279.15mm)	14.53" (369.06mm)	-3.54" (-89.91mm)	8th Driest	Driest since: 1904	2021
Jun 1917–May 1918 12-Month	10.99" (279.15mm)	14.53" (369.06mm)	-3.54" (-89.91mm)	120th Wettest	Wettest since: 1917	1905
Dec 1916–May 1918 18-Month	17.98" (456.69mm)	20.86" (529.84mm)	-2.88" (-73.15mm)	25th Driest	Driest since: 1904	2021
	17.98" (456.69mm)	20.86" (529.84mm)	-2.88" (-73.15mm)	102nd Wettest	Wettest since: 1917	1942
	Ties: 1899
Jun 1916–May 1918 24-Month	26.91" (683.51mm)	29.05" (737.87mm)	-2.14" (-54.36mm)	38th Driest	Driest since: 1904	2021
Jun 1916–May 1918 24-Month	26.91" (683.51mm)	29.05" (737.87mm)	-2.14" (-54.36mm)	89th Wettest	Wettest since: 1917	1942
Jun 1915–May 1918 36-Month	42.42" (1,077.47mm)	43.54" (1,105.92mm)	-1.12" (-28.45mm)	55th Driest	Driest since: 1904	2022
Jun 1915–May 1918 36-Month	42.42" (1,077.47mm)	43.54" (1,105.92mm)	-1.12" (-28.45mm)	71st Wettest	Wettest since: 1917	1907
Jun 1914–May 1918 48-Month	62.00" (1,574.80mm)	58.01" (1,473.45mm)	3.99" (101.35mm)	105th Driest	Driest since: 1914	1904
Jun 1914–May 1918 48-Month	62.00" (1,574.80mm)	58.01" (1,473.45mm)	3.99" (101.35mm)	20th Wettest	Wettest since: 1917	1986
Jun 1913–May 1918 60-Month	77.96" (1,980.18mm)	72.48" (1,840.99mm)	5.48" (139.19mm)	106th Driest	Driest since: 1914	1957
Jun 1913–May 1918 60-Month	77.96" (1,980.18mm)	72.48" (1,840.99mm)	5.48" (139.19mm)	18th Wettest	Wettest since: 1917	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings