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 1956

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1956 1-Month	2.00" (50.80mm)	2.35" (59.69mm)	-0.35" (-8.89mm)	34th Driest	Driest since: 1954	1930
	2.00" (50.80mm)	2.35" (59.69mm)	-0.35" (-8.89mm)	95th Wettest	Wettest since: 1955	2015
	Ties: 1954, 1986
Nov–Dec 1956 2-Month	3.36" (85.34mm)	4.58" (116.33mm)	-1.22" (-30.99mm)	11th Driest	Driest since: 1943	1976
Nov–Dec 1956 2-Month	3.36" (85.34mm)	4.58" (116.33mm)	-1.22" (-30.99mm)	118th Wettest	Wettest since: 1955	2015
Oct–Dec 1956 3-Month	5.36" (136.14mm)	6.74" (171.20mm)	-1.38" (-35.06mm)	14th Driest	Driest since: 1952	1917
Oct–Dec 1956 3-Month	5.36" (136.14mm)	6.74" (171.20mm)	-1.38" (-35.06mm)	115th Wettest	Wettest since: 1955	2015
Sep–Dec 1956 4-Month	6.80" (172.72mm)	9.23" (234.44mm)	-2.43" (-61.72mm)	4th Driest	Driest since: 1952	1939
Sep–Dec 1956 4-Month	6.80" (172.72mm)	9.23" (234.44mm)	-2.43" (-61.72mm)	125th Wettest	Wettest since: 1955	2018
Aug–Dec 1956 5-Month	9.01" (228.85mm)	11.85" (300.99mm)	-2.84" (-72.14mm)	3rd Driest	Driest since: 1939	1917
Aug–Dec 1956 5-Month	9.01" (228.85mm)	11.85" (300.99mm)	-2.84" (-72.14mm)	126th Wettest	Wettest since: 1955	2018
Jul–Dec 1956 6-Month	11.79" (299.47mm)	14.62" (371.35mm)	-2.83" (-71.88mm)	5th Driest	Driest since: 1952	1917
Jul–Dec 1956 6-Month	11.79" (299.47mm)	14.62" (371.35mm)	-2.83" (-71.88mm)	124th Wettest	Wettest since: 1955	2018
Jun–Dec 1956 7-Month	14.00" (355.60mm)	17.55" (445.77mm)	-3.55" (-90.17mm)	3rd Driest	Driest since: 1952	1917
Jun–Dec 1956 7-Month	14.00" (355.60mm)	17.55" (445.77mm)	-3.55" (-90.17mm)	126th Wettest	Wettest since: 1955	2018
May–Dec 1956 8-Month	16.60" (421.64mm)	20.46" (519.68mm)	-3.86" (-98.04mm)	3rd Driest	Driest since: 1952	1917
May–Dec 1956 8-Month	16.60" (421.64mm)	20.46" (519.68mm)	-3.86" (-98.04mm)	126th Wettest	Wettest since: 1955	2015
Apr–Dec 1956 9-Month	18.67" (474.22mm)	22.98" (583.69mm)	-4.31" (-109.47mm)	1st Driest	Driest since: 1956	1956
Apr–Dec 1956 9-Month	18.67" (474.22mm)	22.98" (583.69mm)	-4.31" (-109.47mm)	128th Wettest	Wettest since: 1955	2015
Mar–Dec 1956 10-Month	20.49" (520.45mm)	25.49" (647.45mm)	-5.00" (-127.00mm)	1st Driest	Driest since: 1956	1956
Mar–Dec 1956 10-Month	20.49" (520.45mm)	25.49" (647.45mm)	-5.00" (-127.00mm)	128th Wettest	Wettest since: 1955	2015
Feb–Dec 1956 11-Month	23.11" (586.99mm)	27.62" (701.55mm)	-4.51" (-114.56mm)	3rd Driest	Driest since: 1930	1910
Feb–Dec 1956 11-Month	23.11" (586.99mm)	27.62" (701.55mm)	-4.51" (-114.56mm)	126th Wettest	Wettest since: 1955	2018
Jan–Dec 1956 12-Month	25.38" (644.65mm)	29.94" (760.48mm)	-4.56" (-115.83mm)	3rd Driest	Driest since: 1917	1910
Jan–Dec 1956 12-Month	25.38" (644.65mm)	29.94" (760.48mm)	-4.56" (-115.83mm)	126th Wettest	Wettest since: 1955	1973
Jul 1955–Dec 1956 18-Month	39.35" (999.49mm)	44.58" (1,132.33mm)	-5.23" (-132.84mm)	5th Driest	Driest since: 1954	1954
Jul 1955–Dec 1956 18-Month	39.35" (999.49mm)	44.58" (1,132.33mm)	-5.23" (-132.84mm)	123rd Wettest	Wettest since: 1955	2019
Jan 1955–Dec 1956 24-Month	53.12" (1,349.25mm)	59.90" (1,521.46mm)	-6.78" (-172.21mm)	2nd Driest	Driest since: 1931	1931
Jan 1955–Dec 1956 24-Month	53.12" (1,349.25mm)	59.90" (1,521.46mm)	-6.78" (-172.21mm)	126th Wettest	Wettest since: 1955	2019
Jan 1954–Dec 1956 36-Month	79.27" (2,013.46mm)	89.86" (2,282.44mm)	-10.59" (-268.98mm)	1st Driest	Driest since: 1956	1956
Jan 1954–Dec 1956 36-Month	79.27" (2,013.46mm)	89.86" (2,282.44mm)	-10.59" (-268.98mm)	126th Wettest	Wettest since: 1955	2019
Jan 1953–Dec 1956 48-Month	107.58" (2,732.53mm)	119.78" (3,042.41mm)	-12.20" (-309.88mm)	1st Driest	Driest since: 1956	1956
Jan 1953–Dec 1956 48-Month	107.58" (2,732.53mm)	119.78" (3,042.41mm)	-12.20" (-309.88mm)	125th Wettest	Wettest since: 1955	2019
Jan 1952–Dec 1956 60-Month	133.92" (3,401.57mm)	149.68" (3,801.87mm)	-15.76" (-400.30mm)	1st Driest	Driest since: 1956	1956
Jan 1952–Dec 1956 60-Month	133.92" (3,401.57mm)	149.68" (3,801.87mm)	-15.76" (-400.30mm)	124th Wettest	Wettest since: 1955	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings