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 1931

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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 1931 1-Month	2.71" (68.83mm)	2.78" (70.61mm)	-0.07" (-1.78mm)	50th Driest	Driest since: 1930	1930
	2.71" (68.83mm)	2.78" (70.61mm)	-0.07" (-1.78mm)	79th Wettest	Wettest since: 1928	1950, 1958
	Ties: 1997
Jun–Jul 1931 2-Month	4.85" (123.19mm)	5.70" (144.78mm)	-0.85" (-21.59mm)	13th Driest	Driest since: 1930	1930
Jun–Jul 1931 2-Month	4.85" (123.19mm)	5.70" (144.78mm)	-0.85" (-21.59mm)	116th Wettest	Wettest since: 1929	1928
May–Jul 1931 3-Month	7.14" (181.36mm)	8.62" (218.95mm)	-1.48" (-37.59mm)	6th Driest	Driest since: 1911	1988
May–Jul 1931 3-Month	7.14" (181.36mm)	8.62" (218.95mm)	-1.48" (-37.59mm)	123rd Wettest	Wettest since: 1930	2015
Apr–Jul 1931 4-Month	9.21" (233.93mm)	11.13" (282.70mm)	-1.92" (-48.77mm)	5th Driest	Driest since: 1930	1934
Apr–Jul 1931 4-Month	9.21" (233.93mm)	11.13" (282.70mm)	-1.92" (-48.77mm)	124th Wettest	Wettest since: 1929	2015
Mar–Jul 1931 5-Month	11.52" (292.61mm)	13.64" (346.46mm)	-2.12" (-53.85mm)	9th Driest	Driest since: 1930	1936
Mar–Jul 1931 5-Month	11.52" (292.61mm)	13.64" (346.46mm)	-2.12" (-53.85mm)	120th Wettest	Wettest since: 1929	1973
Feb–Jul 1931 6-Month	13.36" (339.34mm)	15.78" (400.81mm)	-2.42" (-61.47mm)	9th Driest	Driest since: 1930	1934
Feb–Jul 1931 6-Month	13.36" (339.34mm)	15.78" (400.81mm)	-2.42" (-61.47mm)	120th Wettest	Wettest since: 1929	2019
Jan–Jul 1931 7-Month	14.92" (378.97mm)	18.09" (459.49mm)	-3.17" (-80.52mm)	3rd Driest	Driest since: 1931	1934
Jan–Jul 1931 7-Month	14.92" (378.97mm)	18.09" (459.49mm)	-3.17" (-80.52mm)	126th Wettest	Wettest since: 1930	2019
Dec 1930–Jul 1931 8-Month	16.20" (411.48mm)	20.43" (518.92mm)	-4.23" (-107.44mm)	1st Driest	Driest since: 1931	1931
Dec 1930–Jul 1931 8-Month	16.20" (411.48mm)	20.43" (518.92mm)	-4.23" (-107.44mm)	127th Wettest	Wettest since: 1930	2019
Nov 1930–Jul 1931 9-Month	18.48" (469.39mm)	22.66" (575.56mm)	-4.18" (-106.17mm)	3rd Driest	Driest since: 1931	1934
Nov 1930–Jul 1931 9-Month	18.48" (469.39mm)	22.66" (575.56mm)	-4.18" (-106.17mm)	125th Wettest	Wettest since: 1930	2019
Oct 1930–Jul 1931 10-Month	20.79" (528.07mm)	24.83" (630.68mm)	-4.04" (-102.61mm)	4th Driest	Driest since: 1925	1934
Oct 1930–Jul 1931 10-Month	20.79" (528.07mm)	24.83" (630.68mm)	-4.04" (-102.61mm)	124th Wettest	Wettest since: 1930	2019
Sep 1930–Jul 1931 11-Month	23.12" (587.25mm)	27.33" (694.18mm)	-4.21" (-106.93mm)	5th Driest	Driest since: 1918	1934
Sep 1930–Jul 1931 11-Month	23.12" (587.25mm)	27.33" (694.18mm)	-4.21" (-106.93mm)	123rd Wettest	Wettest since: 1930	2019
Aug 1930–Jul 1931 12-Month	25.08" (637.03mm)	29.95" (760.73mm)	-4.87" (-123.70mm)	3rd Driest	Driest since: 1918	1918
Aug 1930–Jul 1931 12-Month	25.08" (637.03mm)	29.95" (760.73mm)	-4.87" (-123.70mm)	125th Wettest	Wettest since: 1930	2019
Feb 1930–Jul 1931 18-Month	37.92" (963.17mm)	45.74" (1,161.80mm)	-7.82" (-198.63mm)	1st Driest	Driest since: 1931	1931
Feb 1930–Jul 1931 18-Month	37.92" (963.17mm)	45.74" (1,161.80mm)	-7.82" (-198.63mm)	127th Wettest	Wettest since: 1930	2019
Aug 1929–Jul 1931 24-Month	51.82" (1,316.23mm)	59.92" (1,521.97mm)	-8.10" (-205.74mm)	2nd Driest	Driest since: 1918	1918
Aug 1929–Jul 1931 24-Month	51.82" (1,316.23mm)	59.92" (1,521.97mm)	-8.10" (-205.74mm)	125th Wettest	Wettest since: 1930	2020
Aug 1928–Jul 1931 36-Month	82.03" (2,083.56mm)	89.88" (2,282.95mm)	-7.85" (-199.39mm)	4th Driest	Driest since: 1931	1956
Aug 1928–Jul 1931 36-Month	82.03" (2,083.56mm)	89.88" (2,282.95mm)	-7.85" (-199.39mm)	122nd Wettest	Wettest since: 1930	2019
Aug 1927–Jul 1931 48-Month	113.13" (2,873.50mm)	119.78" (3,042.41mm)	-6.65" (-168.91mm)	12th Driest	Driest since: 1926	1956
Aug 1927–Jul 1931 48-Month	113.13" (2,873.50mm)	119.78" (3,042.41mm)	-6.65" (-168.91mm)	113th Wettest	Wettest since: 1930	2019
Aug 1926–Jul 1931 60-Month	146.69" (3,725.93mm)	149.64" (3,800.86mm)	-2.95" (-74.93mm)	36th Driest	Driest since: 1927	1934
Aug 1926–Jul 1931 60-Month	146.69" (3,725.93mm)	149.64" (3,800.86mm)	-2.95" (-74.93mm)	88th Wettest	Wettest since: 1930	2019

Citing This Page

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