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, July 1979

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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
July 1979 1-Month	3.30" (83.82mm)	2.78" (70.61mm)	0.52" (13.21mm)	119th Driest	Driest since: 1978	1930
	3.30" (83.82mm)	2.78" (70.61mm)	0.52" (13.21mm)	10th Wettest	Wettest since: 1958	1950, 1958
	Ties: 1906, 1993
Jun–Jul 1979 2-Month	5.84" (148.34mm)	5.70" (144.78mm)	0.14" (3.56mm)	64th Driest	Driest since: 1978	1930
	5.84" (148.34mm)	5.70" (144.78mm)	0.14" (3.56mm)	65th Wettest	Wettest since: 1975	1928
	Ties: 1935, 1943, 2001, 2005
May–Jul 1979 3-Month	9.07" (230.38mm)	8.62" (218.95mm)	0.45" (11.43mm)	84th Driest	Driest since: 1978	1988
May–Jul 1979 3-Month	9.07" (230.38mm)	8.62" (218.95mm)	0.45" (11.43mm)	45th Wettest	Wettest since: 1975	2015
Apr–Jul 1979 4-Month	12.14" (308.36mm)	11.13" (282.70mm)	1.01" (25.66mm)	104th Driest	Driest since: 1978	1934
Apr–Jul 1979 4-Month	12.14" (308.36mm)	11.13" (282.70mm)	1.01" (25.66mm)	25th Wettest	Wettest since: 1975	2015
Mar–Jul 1979 5-Month	14.94" (379.48mm)	13.64" (346.46mm)	1.30" (33.02mm)	109th Driest	Driest since: 1978	1936
Mar–Jul 1979 5-Month	14.94" (379.48mm)	13.64" (346.46mm)	1.30" (33.02mm)	20th Wettest	Wettest since: 1975	1973
Feb–Jul 1979 6-Month	17.54" (445.52mm)	15.78" (400.81mm)	1.76" (44.71mm)	112th Driest	Driest since: 1978	1934
Feb–Jul 1979 6-Month	17.54" (445.52mm)	15.78" (400.81mm)	1.76" (44.71mm)	17th Wettest	Wettest since: 1975	2019
Jan–Jul 1979 7-Month	20.85" (529.59mm)	18.09" (459.49mm)	2.76" (70.10mm)	125th Driest	Driest since: 1978	1934
	20.85" (529.59mm)	18.09" (459.49mm)	2.76" (70.10mm)	4th Wettest	Wettest since: 1975	2019
	Ties: 1975
Dec 1978–Jul 1979 8-Month	23.38" (593.85mm)	20.44" (519.18mm)	2.94" (74.67mm)	121st Driest	Driest since: 1978	1931
Dec 1978–Jul 1979 8-Month	23.38" (593.85mm)	20.44" (519.18mm)	2.94" (74.67mm)	7th Wettest	Wettest since: 1973	2019
Nov 1978–Jul 1979 9-Month	25.98" (659.89mm)	22.66" (575.56mm)	3.32" (84.33mm)	123rd Driest	Driest since: 1978	1934
Nov 1978–Jul 1979 9-Month	25.98" (659.89mm)	22.66" (575.56mm)	3.32" (84.33mm)	5th Wettest	Wettest since: 1973	2019
Oct 1978–Jul 1979 10-Month	27.09" (688.09mm)	24.83" (630.68mm)	2.26" (57.41mm)	110th Driest	Driest since: 1978	1934
Oct 1978–Jul 1979 10-Month	27.09" (688.09mm)	24.83" (630.68mm)	2.26" (57.41mm)	18th Wettest	Wettest since: 1975	2019
Sep 1978–Jul 1979 11-Month	29.53" (750.06mm)	27.33" (694.18mm)	2.20" (55.88mm)	109th Driest	Driest since: 1977	1934
	29.53" (750.06mm)	27.33" (694.18mm)	2.20" (55.88mm)	19th Wettest	Wettest since: 1978	2019
	Ties: 1991
Aug 1978–Jul 1979 12-Month	32.30" (820.42mm)	29.95" (760.73mm)	2.35" (59.69mm)	108th Driest	Driest since: 1977	1918
Aug 1978–Jul 1979 12-Month	32.30" (820.42mm)	29.95" (760.73mm)	2.35" (59.69mm)	20th Wettest	Wettest since: 1978	2019
Feb 1978–Jul 1979 18-Month	47.81" (1,214.37mm)	45.74" (1,161.80mm)	2.07" (52.57mm)	93rd Driest	Driest since: 1978	1931
Feb 1978–Jul 1979 18-Month	47.81" (1,214.37mm)	45.74" (1,161.80mm)	2.07" (52.57mm)	35th Wettest	Wettest since: 1975	2019
Aug 1977–Jul 1979 24-Month	65.53" (1,664.46mm)	59.92" (1,521.97mm)	5.61" (142.49mm)	116th Driest	Driest since: 1978	1918
Aug 1977–Jul 1979 24-Month	65.53" (1,664.46mm)	59.92" (1,521.97mm)	5.61" (142.49mm)	11th Wettest	Wettest since: 1975	2020
Aug 1976–Jul 1979 36-Month	90.79" (2,306.07mm)	89.88" (2,282.95mm)	0.91" (23.12mm)	71st Driest	Driest since: 1978	1956
	90.79" (2,306.07mm)	89.88" (2,282.95mm)	0.91" (23.12mm)	55th Wettest	Wettest since: 1976	2019
	Ties: 1945
Aug 1975–Jul 1979 48-Month	119.92" (3,045.97mm)	119.78" (3,042.41mm)	0.14" (3.56mm)	58th Driest	Driest since: 1971	1956
	119.92" (3,045.97mm)	119.78" (3,042.41mm)	0.14" (3.56mm)	67th Wettest	Wettest since: 1978	2019
	Ties: 1917
Aug 1974–Jul 1979 60-Month	153.53" (3,899.66mm)	149.64" (3,800.86mm)	3.89" (98.80mm)	85th Driest	Driest since: 1978	1934
Aug 1974–Jul 1979 60-Month	153.53" (3,899.66mm)	149.64" (3,800.86mm)	3.89" (98.80mm)	39th Wettest	Wettest since: 1977	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on June 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings