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 1987

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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 1987 1-Month	2.83" (71.88mm)	2.78" (70.61mm)	0.05" (1.27mm)	66th Driest	Driest since: 1986	1930
	2.83" (71.88mm)	2.78" (70.61mm)	0.05" (1.27mm)	63rd Wettest	Wettest since: 1984	1950, 1958
	Ties: 1933, 1984
Jun–Jul 1987 2-Month	5.64" (143.26mm)	5.70" (144.78mm)	-0.06" (-1.52mm)	50th Driest	Driest since: 1985	1930
Jun–Jul 1987 2-Month	5.64" (143.26mm)	5.70" (144.78mm)	-0.06" (-1.52mm)	79th Wettest	Wettest since: 1986	1928
May–Jul 1987 3-Month	8.88" (225.55mm)	8.62" (218.95mm)	0.26" (6.60mm)	71st Driest	Driest since: 1986	1988
May–Jul 1987 3-Month	8.88" (225.55mm)	8.62" (218.95mm)	0.26" (6.60mm)	58th Wettest	Wettest since: 1984	2015
Apr–Jul 1987 4-Month	10.34" (262.64mm)	11.13" (282.70mm)	-0.79" (-20.06mm)	30th Driest	Driest since: 1985	1934
Apr–Jul 1987 4-Month	10.34" (262.64mm)	11.13" (282.70mm)	-0.79" (-20.06mm)	99th Wettest	Wettest since: 1986	2015
Mar–Jul 1987 5-Month	13.01" (330.45mm)	13.64" (346.46mm)	-0.63" (-16.01mm)	34th Driest	Driest since: 1986	1936
	13.01" (330.45mm)	13.64" (346.46mm)	-0.63" (-16.01mm)	95th Wettest	Wettest since: 1984	1973
	Ties: 1940
Feb–Jul 1987 6-Month	15.34" (389.64mm)	15.78" (400.81mm)	-0.44" (-11.17mm)	46th Driest	Driest since: 1985	1934
Feb–Jul 1987 6-Month	15.34" (389.64mm)	15.78" (400.81mm)	-0.44" (-11.17mm)	83rd Wettest	Wettest since: 1986	2019
Jan–Jul 1987 7-Month	17.51" (444.75mm)	18.09" (459.49mm)	-0.58" (-14.74mm)	39th Driest	Driest since: 1986	1934
Jan–Jul 1987 7-Month	17.51" (444.75mm)	18.09" (459.49mm)	-0.58" (-14.74mm)	90th Wettest	Wettest since: 1984	2019
Dec 1986–Jul 1987 8-Month	19.51" (495.55mm)	20.44" (519.18mm)	-0.93" (-23.63mm)	35th Driest	Driest since: 1986	1931
Dec 1986–Jul 1987 8-Month	19.51" (495.55mm)	20.44" (519.18mm)	-0.93" (-23.63mm)	93rd Wettest	Wettest since: 1984	2019
Nov 1986–Jul 1987 9-Month	22.45" (570.23mm)	22.66" (575.56mm)	-0.21" (-5.33mm)	53rd Driest	Driest since: 1986	1934
Nov 1986–Jul 1987 9-Month	22.45" (570.23mm)	22.66" (575.56mm)	-0.21" (-5.33mm)	75th Wettest	Wettest since: 1984	2019
Oct 1986–Jul 1987 10-Month	25.26" (641.60mm)	24.83" (630.68mm)	0.43" (10.92mm)	71st Driest	Driest since: 1985	1934
	25.26" (641.60mm)	24.83" (630.68mm)	0.43" (10.92mm)	57th Wettest	Wettest since: 1986	2019
	Ties: 1900
Sep 1986–Jul 1987 11-Month	28.85" (732.79mm)	27.33" (694.18mm)	1.52" (38.61mm)	96th Driest	Driest since: 1986	1934
Sep 1986–Jul 1987 11-Month	28.85" (732.79mm)	27.33" (694.18mm)	1.52" (38.61mm)	32nd Wettest	Wettest since: 1984	2019
Aug 1986–Jul 1987 12-Month	31.67" (804.42mm)	29.95" (760.73mm)	1.72" (43.69mm)	95th Driest	Driest since: 1986	1918
Aug 1986–Jul 1987 12-Month	31.67" (804.42mm)	29.95" (760.73mm)	1.72" (43.69mm)	33rd Wettest	Wettest since: 1984	2019
Feb 1986–Jul 1987 18-Month	47.44" (1,204.98mm)	45.74" (1,161.80mm)	1.70" (43.18mm)	87th Driest	Driest since: 1986	1931
Feb 1986–Jul 1987 18-Month	47.44" (1,204.98mm)	45.74" (1,161.80mm)	1.70" (43.18mm)	41st Wettest	Wettest since: 1984	2019
Aug 1985–Jul 1987 24-Month	63.00" (1,600.20mm)	59.92" (1,521.97mm)	3.08" (78.23mm)	100th Driest	Driest since: 1986	1918
Aug 1985–Jul 1987 24-Month	63.00" (1,600.20mm)	59.92" (1,521.97mm)	3.08" (78.23mm)	27th Wettest	Wettest since: 1984	2020
Aug 1984–Jul 1987 36-Month	92.19" (2,341.63mm)	89.88" (2,282.95mm)	2.31" (58.68mm)	84th Driest	Driest since: 1982	1956
Aug 1984–Jul 1987 36-Month	92.19" (2,341.63mm)	89.88" (2,282.95mm)	2.31" (58.68mm)	42nd Wettest	Wettest since: 1986	2019
Aug 1983–Jul 1987 48-Month	124.86" (3,171.44mm)	119.78" (3,042.41mm)	5.08" (129.03mm)	100th Driest	Driest since: 1983	1956
Aug 1983–Jul 1987 48-Month	124.86" (3,171.44mm)	119.78" (3,042.41mm)	5.08" (129.03mm)	25th Wettest	Wettest since: 1986	2019
Aug 1982–Jul 1987 60-Month	159.10" (4,041.14mm)	149.64" (3,800.86mm)	9.46" (240.28mm)	111th Driest	Driest since: 1985	1934
Aug 1982–Jul 1987 60-Month	159.10" (4,041.14mm)	149.64" (3,800.86mm)	9.46" (240.28mm)	13th Wettest	Wettest since: 1986	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings