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 1984

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1984 1-Month	2.49" (63.25mm)	2.35" (59.69mm)	0.14" (3.56mm)	70th Driest	Driest since: 1981	1930
December 1984 1-Month	2.49" (63.25mm)	2.35" (59.69mm)	0.14" (3.56mm)	59th Wettest	Wettest since: 1983	2015
Nov–Dec 1984 2-Month	5.34" (135.64mm)	4.58" (116.33mm)	0.76" (19.31mm)	104th Driest	Driest since: 1981	1976
Nov–Dec 1984 2-Month	5.34" (135.64mm)	4.58" (116.33mm)	0.76" (19.31mm)	25th Wettest	Wettest since: 1983	2015
Oct–Dec 1984 3-Month	8.99" (228.35mm)	6.74" (171.20mm)	2.25" (57.15mm)	123rd Driest	Driest since: 1981	1917
Oct–Dec 1984 3-Month	8.99" (228.35mm)	6.74" (171.20mm)	2.25" (57.15mm)	6th Wettest	Wettest since: 1983	2015
Sep–Dec 1984 4-Month	10.90" (276.86mm)	9.23" (234.44mm)	1.67" (42.42mm)	113th Driest	Driest since: 1981	1939
Sep–Dec 1984 4-Month	10.90" (276.86mm)	9.23" (234.44mm)	1.67" (42.42mm)	16th Wettest	Wettest since: 1983	2018
Aug–Dec 1984 5-Month	13.33" (338.58mm)	11.85" (300.99mm)	1.48" (37.59mm)	110th Driest	Driest since: 1981	1917
	13.33" (338.58mm)	11.85" (300.99mm)	1.48" (37.59mm)	19th Wettest	Wettest since: 1983	2018
	Ties: 1957
Jul–Dec 1984 6-Month	16.16" (410.46mm)	14.62" (371.35mm)	1.54" (39.11mm)	109th Driest	Driest since: 1981	1917
Jul–Dec 1984 6-Month	16.16" (410.46mm)	14.62" (371.35mm)	1.54" (39.11mm)	20th Wettest	Wettest since: 1983	2018
Jun–Dec 1984 7-Month	19.09" (484.89mm)	17.55" (445.77mm)	1.54" (39.12mm)	106th Driest	Driest since: 1981	1917
Jun–Dec 1984 7-Month	19.09" (484.89mm)	17.55" (445.77mm)	1.54" (39.12mm)	23rd Wettest	Wettest since: 1983	2018
May–Dec 1984 8-Month	22.24" (564.90mm)	20.46" (519.68mm)	1.78" (45.22mm)	107th Driest	Driest since: 1980	1917
May–Dec 1984 8-Month	22.24" (564.90mm)	20.46" (519.68mm)	1.78" (45.22mm)	22nd Wettest	Wettest since: 1983	2015
Apr–Dec 1984 9-Month	25.19" (639.83mm)	22.98" (583.69mm)	2.21" (56.14mm)	112th Driest	Driest since: 1981	1956
Apr–Dec 1984 9-Month	25.19" (639.83mm)	22.98" (583.69mm)	2.21" (56.14mm)	17th Wettest	Wettest since: 1983	2015
Mar–Dec 1984 10-Month	27.94" (709.68mm)	25.49" (647.45mm)	2.45" (62.23mm)	113th Driest	Driest since: 1981	1956
Mar–Dec 1984 10-Month	27.94" (709.68mm)	25.49" (647.45mm)	2.45" (62.23mm)	16th Wettest	Wettest since: 1983	2015
Feb–Dec 1984 11-Month	30.05" (763.27mm)	27.62" (701.55mm)	2.43" (61.72mm)	110th Driest	Driest since: 1981	1910
Feb–Dec 1984 11-Month	30.05" (763.27mm)	27.62" (701.55mm)	2.43" (61.72mm)	19th Wettest	Wettest since: 1983	2018
Jan–Dec 1984 12-Month	31.40" (797.56mm)	29.94" (760.48mm)	1.46" (37.08mm)	99th Driest	Driest since: 1981	1910
Jan–Dec 1984 12-Month	31.40" (797.56mm)	29.94" (760.48mm)	1.46" (37.08mm)	30th Wettest	Wettest since: 1983	1973
Jul 1983–Dec 1984 18-Month	48.08" (1,221.23mm)	44.58" (1,132.33mm)	3.50" (88.90mm)	108th Driest	Driest since: 1981	1954
Jul 1983–Dec 1984 18-Month	48.08" (1,221.23mm)	44.58" (1,132.33mm)	3.50" (88.90mm)	20th Wettest	Wettest since: 1983	2019
Jan 1983–Dec 1984 24-Month	66.16" (1,680.46mm)	59.90" (1,521.46mm)	6.26" (159.00mm)	122nd Driest	Driest since: 1982	1931
Jan 1983–Dec 1984 24-Month	66.16" (1,680.46mm)	59.90" (1,521.46mm)	6.26" (159.00mm)	6th Wettest	Wettest since: 1983	2019
Jan 1982–Dec 1984 36-Month	100.02" (2,540.51mm)	89.86" (2,282.44mm)	10.16" (258.07mm)	125th Driest	Driest since: 1983	1956
Jan 1982–Dec 1984 36-Month	100.02" (2,540.51mm)	89.86" (2,282.44mm)	10.16" (258.07mm)	2nd Wettest	Wettest to Date	2019
Jan 1981–Dec 1984 48-Month	129.98" (3,301.49mm)	119.78" (3,042.41mm)	10.20" (259.08mm)	118th Driest	Driest since: 1983	1956
Jan 1981–Dec 1984 48-Month	129.98" (3,301.49mm)	119.78" (3,042.41mm)	10.20" (259.08mm)	8th Wettest	Wettest since: 1975	2019
Jan 1980–Dec 1984 60-Month	158.25" (4,019.55mm)	149.68" (3,801.87mm)	8.57" (217.68mm)	108th Driest	Driest since: 1982	1956
Jan 1980–Dec 1984 60-Month	158.25" (4,019.55mm)	149.68" (3,801.87mm)	8.57" (217.68mm)	17th Wettest	Wettest since: 1983	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings