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 1917

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1917 1-Month	1.66" (42.16mm)	2.35" (59.69mm)	-0.69" (-17.53mm)	12th Driest	Driest since: 1903	1930
	1.66" (42.16mm)	2.35" (59.69mm)	-0.69" (-17.53mm)	117th Wettest	Wettest since: 1916	2015
	Ties: 1900, 1925
Nov–Dec 1917 2-Month	2.61" (66.29mm)	4.58" (116.33mm)	-1.97" (-50.04mm)	2nd Driest	Driest since: 1917	1976
Nov–Dec 1917 2-Month	2.61" (66.29mm)	4.58" (116.33mm)	-1.97" (-50.04mm)	127th Wettest	Wettest since: 1916	2015
Oct–Dec 1917 3-Month	3.99" (101.35mm)	6.74" (171.20mm)	-2.75" (-69.85mm)	1st Driest	Driest since: 1917	1917
Oct–Dec 1917 3-Month	3.99" (101.35mm)	6.74" (171.20mm)	-2.75" (-69.85mm)	128th Wettest	Wettest since: 1916	2015
Sep–Dec 1917 4-Month	6.16" (156.46mm)	9.23" (234.44mm)	-3.07" (-77.98mm)	2nd Driest	Driest since: 1917	1939
Sep–Dec 1917 4-Month	6.16" (156.46mm)	9.23" (234.44mm)	-3.07" (-77.98mm)	127th Wettest	Wettest since: 1916	2018
Aug–Dec 1917 5-Month	8.60" (218.44mm)	11.85" (300.99mm)	-3.25" (-82.55mm)	1st Driest	Driest since: 1917	1917
Aug–Dec 1917 5-Month	8.60" (218.44mm)	11.85" (300.99mm)	-3.25" (-82.55mm)	128th Wettest	Wettest since: 1916	2018
Jul–Dec 1917 6-Month	11.11" (282.19mm)	14.62" (371.35mm)	-3.51" (-89.16mm)	1st Driest	Driest since: 1917	1917
Jul–Dec 1917 6-Month	11.11" (282.19mm)	14.62" (371.35mm)	-3.51" (-89.16mm)	128th Wettest	Wettest since: 1916	2018
Jun–Dec 1917 7-Month	13.55" (344.17mm)	17.55" (445.77mm)	-4.00" (-101.60mm)	1st Driest	Driest since: 1917	1917
Jun–Dec 1917 7-Month	13.55" (344.17mm)	17.55" (445.77mm)	-4.00" (-101.60mm)	128th Wettest	Wettest since: 1916	2018
May–Dec 1917 8-Month	16.19" (411.23mm)	20.46" (519.68mm)	-4.27" (-108.45mm)	1st Driest	Driest since: 1917	1917
May–Dec 1917 8-Month	16.19" (411.23mm)	20.46" (519.68mm)	-4.27" (-108.45mm)	128th Wettest	Wettest since: 1916	2015
Apr–Dec 1917 9-Month	18.87" (479.30mm)	22.98" (583.69mm)	-4.11" (-104.39mm)	3rd Driest	Driest since: 1917	1956
Apr–Dec 1917 9-Month	18.87" (479.30mm)	22.98" (583.69mm)	-4.11" (-104.39mm)	126th Wettest	Wettest since: 1916	2015
Mar–Dec 1917 10-Month	21.35" (542.29mm)	25.49" (647.45mm)	-4.14" (-105.16mm)	5th Driest	Driest since: 1910	1956
Mar–Dec 1917 10-Month	21.35" (542.29mm)	25.49" (647.45mm)	-4.14" (-105.16mm)	124th Wettest	Wettest since: 1916	2015
Feb–Dec 1917 11-Month	23.16" (588.26mm)	27.62" (701.55mm)	-4.46" (-113.29mm)	4th Driest	Driest since: 1910	1910
Feb–Dec 1917 11-Month	23.16" (588.26mm)	27.62" (701.55mm)	-4.46" (-113.29mm)	125th Wettest	Wettest since: 1916	2018
Jan–Dec 1917 12-Month	25.35" (643.89mm)	29.94" (760.48mm)	-4.59" (-116.59mm)	2nd Driest	Driest since: 1910	1910
Jan–Dec 1917 12-Month	25.35" (643.89mm)	29.94" (760.48mm)	-4.59" (-116.59mm)	127th Wettest	Wettest since: 1916	1973
Jul 1916–Dec 1917 18-Month	38.87" (987.30mm)	44.58" (1,132.33mm)	-5.71" (-145.03mm)	2nd Driest	Driest since: 1917	1954
Jul 1916–Dec 1917 18-Month	38.87" (987.30mm)	44.58" (1,132.33mm)	-5.71" (-145.03mm)	126th Wettest	Wettest since: 1916	2019
Jan 1916–Dec 1917 24-Month	54.77" (1,391.16mm)	59.90" (1,521.46mm)	-5.13" (-130.30mm)	11th Driest	Driest since: 1911	1931
Jan 1916–Dec 1917 24-Month	54.77" (1,391.16mm)	59.90" (1,521.46mm)	-5.13" (-130.30mm)	117th Wettest	Wettest since: 1916	2019
Jan 1915–Dec 1917 36-Month	87.54" (2,223.52mm)	89.86" (2,282.44mm)	-2.32" (-58.92mm)	38th Driest	Driest since: 1912	1956
Jan 1915–Dec 1917 36-Month	87.54" (2,223.52mm)	89.86" (2,282.44mm)	-2.32" (-58.92mm)	89th Wettest	Wettest since: 1916	2019
Jan 1914–Dec 1917 48-Month	116.35" (2,955.29mm)	119.78" (3,042.41mm)	-3.43" (-87.12mm)	29th Driest	Driest since: 1913	1956
Jan 1914–Dec 1917 48-Month	116.35" (2,955.29mm)	119.78" (3,042.41mm)	-3.43" (-87.12mm)	97th Wettest	Wettest since: 1916	2019
Jan 1913–Dec 1917 60-Month	146.19" (3,713.23mm)	149.68" (3,801.87mm)	-3.49" (-88.64mm)	32nd Driest	Driest since: 1914	1956
Jan 1913–Dec 1917 60-Month	146.19" (3,713.23mm)	149.68" (3,801.87mm)	-3.49" (-88.64mm)	93rd Wettest	Wettest since: 1916	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings