National Rankings

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Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, December 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
December 1918 1-Month	2.66" (67.56mm)	2.35" (59.69mm)	0.31" (7.87mm)	86th Driest	Driest since: 1917	1930
	2.66" (67.56mm)	2.35" (59.69mm)	0.31" (7.87mm)	43rd Wettest	Wettest since: 1911	2015
	Ties: 1933
Nov–Dec 1918 2-Month	4.98" (126.49mm)	4.58" (116.33mm)	0.40" (10.16mm)	92nd Driest	Driest since: 1917	1976
Nov–Dec 1918 2-Month	4.98" (126.49mm)	4.58" (116.33mm)	0.40" (10.16mm)	37th Wettest	Wettest since: 1911	2015
Oct–Dec 1918 3-Month	7.90" (200.66mm)	6.74" (171.20mm)	1.16" (29.46mm)	109th Driest	Driest since: 1917	1917
Oct–Dec 1918 3-Month	7.90" (200.66mm)	6.74" (171.20mm)	1.16" (29.46mm)	20th Wettest	Wettest to Date	2015
Sep–Dec 1918 4-Month	10.34" (262.64mm)	9.23" (234.44mm)	1.11" (28.20mm)	102nd Driest	Driest since: 1917	1939
Sep–Dec 1918 4-Month	10.34" (262.64mm)	9.23" (234.44mm)	1.11" (28.20mm)	27th Wettest	Wettest since: 1906	2018
Aug–Dec 1918 5-Month	12.81" (325.37mm)	11.85" (300.99mm)	0.96" (24.38mm)	92nd Driest	Driest since: 1917	1917
Aug–Dec 1918 5-Month	12.81" (325.37mm)	11.85" (300.99mm)	0.96" (24.38mm)	37th Wettest	Wettest since: 1911	2018
Jul–Dec 1918 6-Month	15.14" (384.56mm)	14.62" (371.35mm)	0.52" (13.21mm)	76th Driest	Driest since: 1917	1917
	15.14" (384.56mm)	14.62" (371.35mm)	0.52" (13.21mm)	53rd Wettest	Wettest since: 1915	2018
	Ties: 1970
Jun–Dec 1918 7-Month	17.39" (441.71mm)	17.55" (445.77mm)	-0.16" (-4.06mm)	52nd Driest	Driest since: 1917	1917
Jun–Dec 1918 7-Month	17.39" (441.71mm)	17.55" (445.77mm)	-0.16" (-4.06mm)	77th Wettest	Wettest since: 1915	2018
May–Dec 1918 8-Month	19.98" (507.49mm)	20.46" (519.68mm)	-0.48" (-12.19mm)	44th Driest	Driest since: 1917	1917
May–Dec 1918 8-Month	19.98" (507.49mm)	20.46" (519.68mm)	-0.48" (-12.19mm)	85th Wettest	Wettest since: 1915	2015
Apr–Dec 1918 9-Month	22.80" (579.12mm)	22.98" (583.69mm)	-0.18" (-4.57mm)	49th Driest	Driest since: 1917	1956
Apr–Dec 1918 9-Month	22.80" (579.12mm)	22.98" (583.69mm)	-0.18" (-4.57mm)	80th Wettest	Wettest since: 1915	2015
Mar–Dec 1918 10-Month	24.65" (626.11mm)	25.49" (647.45mm)	-0.84" (-21.34mm)	37th Driest	Driest since: 1917	1956
Mar–Dec 1918 10-Month	24.65" (626.11mm)	25.49" (647.45mm)	-0.84" (-21.34mm)	92nd Wettest	Wettest since: 1915	2015
Feb–Dec 1918 11-Month	26.37" (669.80mm)	27.62" (701.55mm)	-1.25" (-31.75mm)	31st Driest	Driest since: 1917	1910
Feb–Dec 1918 11-Month	26.37" (669.80mm)	27.62" (701.55mm)	-1.25" (-31.75mm)	98th Wettest	Wettest since: 1915	2018
Jan–Dec 1918 12-Month	28.78" (731.01mm)	29.94" (760.48mm)	-1.16" (-29.47mm)	32nd Driest	Driest since: 1917	1910
	28.78" (731.01mm)	29.94" (760.48mm)	-1.16" (-29.47mm)	97th Wettest	Wettest since: 1916	1973
	Ties: 1921
Jul 1917–Dec 1918 18-Month	39.89" (1,013.21mm)	44.58" (1,132.33mm)	-4.69" (-119.12mm)	10th Driest	Driest since: 1917	1954
Jul 1917–Dec 1918 18-Month	39.89" (1,013.21mm)	44.58" (1,132.33mm)	-4.69" (-119.12mm)	118th Wettest	Wettest since: 1916	2019
Jan 1917–Dec 1918 24-Month	54.13" (1,374.90mm)	59.90" (1,521.46mm)	-5.77" (-146.56mm)	6th Driest	Driest to Date	1931
Jan 1917–Dec 1918 24-Month	54.13" (1,374.90mm)	59.90" (1,521.46mm)	-5.77" (-146.56mm)	122nd Wettest	Wettest since: 1917	2019
Jan 1916–Dec 1918 36-Month	83.55" (2,122.17mm)	89.86" (2,282.44mm)	-6.31" (-160.27mm)	8th Driest	Driest to Date	1956
Jan 1916–Dec 1918 36-Month	83.55" (2,122.17mm)	89.86" (2,282.44mm)	-6.31" (-160.27mm)	119th Wettest	Wettest since: 1917	2019
Jan 1915–Dec 1918 48-Month	116.32" (2,954.53mm)	119.78" (3,042.41mm)	-3.46" (-87.88mm)	28th Driest	Driest since: 1913	1956
Jan 1915–Dec 1918 48-Month	116.32" (2,954.53mm)	119.78" (3,042.41mm)	-3.46" (-87.88mm)	98th Wettest	Wettest since: 1917	2019
Jan 1914–Dec 1918 60-Month	145.13" (3,686.30mm)	149.68" (3,801.87mm)	-4.55" (-115.57mm)	22nd Driest	Driest since: 1914	1956
Jan 1914–Dec 1918 60-Month	145.13" (3,686.30mm)	149.68" (3,801.87mm)	-4.55" (-115.57mm)	103rd Wettest	Wettest since: 1917	2019

Citing This Page

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