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 1991

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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 1991 1-Month	2.70" (68.58mm)	2.78" (70.61mm)	-0.08" (-2.03mm)	45th Driest	Driest since: 1988	1930
	2.70" (68.58mm)	2.78" (70.61mm)	-0.08" (-2.03mm)	84th Wettest	Wettest since: 1990	1950, 1958
	Ties: 1920, 1923, 1988, 2005
Jun–Jul 1991 2-Month	5.54" (140.72mm)	5.70" (144.78mm)	-0.16" (-4.06mm)	44th Driest	Driest since: 1990	1930
Jun–Jul 1991 2-Month	5.54" (140.72mm)	5.70" (144.78mm)	-0.16" (-4.06mm)	85th Wettest	Wettest since: 1989	1928
May–Jul 1991 3-Month	9.26" (235.20mm)	8.62" (218.95mm)	0.64" (16.25mm)	95th Driest	Driest since: 1988	1988
	9.26" (235.20mm)	8.62" (218.95mm)	0.64" (16.25mm)	34th Wettest	Wettest since: 1990	2015
	Ties: 1949
Apr–Jul 1991 4-Month	12.61" (320.29mm)	11.13" (282.70mm)	1.48" (37.59mm)	117th Driest	Driest since: 1990	1934
	12.61" (320.29mm)	11.13" (282.70mm)	1.48" (37.59mm)	12th Wettest	Wettest since: 1957	2015
	Ties: 1928
Mar–Jul 1991 5-Month	15.94" (404.88mm)	13.64" (346.46mm)	2.30" (58.42mm)	123rd Driest	Driest since: 1990	1936
Mar–Jul 1991 5-Month	15.94" (404.88mm)	13.64" (346.46mm)	2.30" (58.42mm)	6th Wettest	Wettest since: 1973	1973
Feb–Jul 1991 6-Month	17.58" (446.53mm)	15.78" (400.81mm)	1.80" (45.72mm)	114th Driest	Driest since: 1990	1934
Feb–Jul 1991 6-Month	17.58" (446.53mm)	15.78" (400.81mm)	1.80" (45.72mm)	15th Wettest	Wettest since: 1983	2019
Jan–Jul 1991 7-Month	19.95" (506.73mm)	18.09" (459.49mm)	1.86" (47.24mm)	114th Driest	Driest since: 1990	1934
	19.95" (506.73mm)	18.09" (459.49mm)	1.86" (47.24mm)	15th Wettest	Wettest since: 1983	2019
	Ties: 1958
Dec 1990–Jul 1991 8-Month	22.64" (575.06mm)	20.44" (519.18mm)	2.20" (55.88mm)	116th Driest	Driest since: 1990	1931
	22.64" (575.06mm)	20.44" (519.18mm)	2.20" (55.88mm)	12th Wettest	Wettest since: 1983	2019
	Ties: 1938
Nov 1990–Jul 1991 9-Month	24.73" (628.14mm)	22.66" (575.56mm)	2.07" (52.58mm)	110th Driest	Driest since: 1990	1934
Nov 1990–Jul 1991 9-Month	24.73" (628.14mm)	22.66" (575.56mm)	2.07" (52.58mm)	18th Wettest	Wettest since: 1984	2019
Oct 1990–Jul 1991 10-Month	27.49" (698.25mm)	24.83" (630.68mm)	2.66" (67.57mm)	115th Driest	Driest since: 1990	1934
Oct 1990–Jul 1991 10-Month	27.49" (698.25mm)	24.83" (630.68mm)	2.66" (67.57mm)	13th Wettest	Wettest since: 1984	2019
Sep 1990–Jul 1991 11-Month	29.53" (750.06mm)	27.33" (694.18mm)	2.20" (55.88mm)	109th Driest	Driest since: 1990	1934
	29.53" (750.06mm)	27.33" (694.18mm)	2.20" (55.88mm)	19th Wettest	Wettest since: 1984	2019
	Ties: 1979
Aug 1990–Jul 1991 12-Month	32.18" (817.37mm)	29.95" (760.73mm)	2.23" (56.64mm)	105th Driest	Driest since: 1990	1918
Aug 1990–Jul 1991 12-Month	32.18" (817.37mm)	29.95" (760.73mm)	2.23" (56.64mm)	23rd Wettest	Wettest since: 1984	2019
Feb 1990–Jul 1991 18-Month	49.33" (1,252.98mm)	45.74" (1,161.80mm)	3.59" (91.18mm)	110th Driest	Driest since: 1990	1931
Feb 1990–Jul 1991 18-Month	49.33" (1,252.98mm)	45.74" (1,161.80mm)	3.59" (91.18mm)	18th Wettest	Wettest since: 1984	2019
Aug 1989–Jul 1991 24-Month	62.49" (1,587.25mm)	59.92" (1,521.97mm)	2.57" (65.28mm)	92nd Driest	Driest since: 1990	1918
Aug 1989–Jul 1991 24-Month	62.49" (1,587.25mm)	59.92" (1,521.97mm)	2.57" (65.28mm)	35th Wettest	Wettest since: 1987	2020
Aug 1988–Jul 1991 36-Month	92.84" (2,358.14mm)	89.88" (2,282.95mm)	2.96" (75.19mm)	89th Driest	Driest since: 1990	1956
Aug 1988–Jul 1991 36-Month	92.84" (2,358.14mm)	89.88" (2,282.95mm)	2.96" (75.19mm)	37th Wettest	Wettest since: 1986	2019
Aug 1987–Jul 1991 48-Month	118.57" (3,011.68mm)	119.78" (3,042.41mm)	-1.21" (-30.73mm)	47th Driest	Driest since: 1990	1956
	118.57" (3,011.68mm)	119.78" (3,042.41mm)	-1.21" (-30.73mm)	78th Wettest	Wettest since: 1989	2019
	Ties: 2014
Aug 1986–Jul 1991 60-Month	150.24" (3,816.10mm)	149.64" (3,800.86mm)	0.60" (15.24mm)	63rd Driest	Driest since: 1990	1934
Aug 1986–Jul 1991 60-Month	150.24" (3,816.10mm)	149.64" (3,800.86mm)	0.60" (15.24mm)	61st Wettest	Wettest since: 1988	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings