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 1918

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
July 1918 1-Month	2.33" (59.18mm)	2.78" (70.61mm)	-0.45" (-11.43mm)	13th Driest	Driest since: 1901	1930
July 1918 1-Month	2.33" (59.18mm)	2.78" (70.61mm)	-0.45" (-11.43mm)	116th Wettest	Wettest since: 1917	1950, 1958
Jun–Jul 1918 2-Month	4.58" (116.33mm)	5.70" (144.78mm)	-1.12" (-28.45mm)	7th Driest	Driest since: 1918	1930
Jun–Jul 1918 2-Month	4.58" (116.33mm)	5.70" (144.78mm)	-1.12" (-28.45mm)	122nd Wettest	Wettest since: 1917	1928
May–Jul 1918 3-Month	7.17" (182.12mm)	8.62" (218.95mm)	-1.45" (-36.83mm)	7th Driest	Driest since: 1911	1988
May–Jul 1918 3-Month	7.17" (182.12mm)	8.62" (218.95mm)	-1.45" (-36.83mm)	122nd Wettest	Wettest since: 1917	2015
Apr–Jul 1918 4-Month	9.99" (253.75mm)	11.13" (282.70mm)	-1.14" (-28.95mm)	20th Driest	Driest since: 1913	1934
	9.99" (253.75mm)	11.13" (282.70mm)	-1.14" (-28.95mm)	109th Wettest	Wettest since: 1917	2015
	Ties: 1977
Mar–Jul 1918 5-Month	11.84" (300.74mm)	13.64" (346.46mm)	-1.80" (-45.72mm)	12th Driest	Driest since: 1911	1936
Mar–Jul 1918 5-Month	11.84" (300.74mm)	13.64" (346.46mm)	-1.80" (-45.72mm)	117th Wettest	Wettest since: 1917	1973
Feb–Jul 1918 6-Month	13.56" (344.42mm)	15.78" (400.81mm)	-2.22" (-56.39mm)	10th Driest	Driest since: 1910	1934
Feb–Jul 1918 6-Month	13.56" (344.42mm)	15.78" (400.81mm)	-2.22" (-56.39mm)	119th Wettest	Wettest since: 1917	2019
Jan–Jul 1918 7-Month	15.97" (405.64mm)	18.09" (459.49mm)	-2.12" (-53.85mm)	12th Driest	Driest since: 1910	1934
Jan–Jul 1918 7-Month	15.97" (405.64mm)	18.09" (459.49mm)	-2.12" (-53.85mm)	117th Wettest	Wettest since: 1917	2019
Dec 1917–Jul 1918 8-Month	17.63" (447.80mm)	20.43" (518.92mm)	-2.80" (-71.12mm)	6th Driest	Driest since: 1910	1931
	17.63" (447.80mm)	20.43" (518.92mm)	-2.80" (-71.12mm)	122nd Wettest	Wettest since: 1917	2019
	Ties: 1930
Nov 1917–Jul 1918 9-Month	18.58" (471.93mm)	22.66" (575.56mm)	-4.08" (-103.63mm)	4th Driest	Driest since: 1918	1934
Nov 1917–Jul 1918 9-Month	18.58" (471.93mm)	22.66" (575.56mm)	-4.08" (-103.63mm)	124th Wettest	Wettest since: 1917	2019
Oct 1917–Jul 1918 10-Month	19.96" (506.98mm)	24.83" (630.68mm)	-4.87" (-123.70mm)	2nd Driest	Driest since: 1918	1934
Oct 1917–Jul 1918 10-Month	19.96" (506.98mm)	24.83" (630.68mm)	-4.87" (-123.70mm)	126th Wettest	Wettest since: 1917	2019
Sep 1917–Jul 1918 11-Month	22.13" (562.10mm)	27.33" (694.18mm)	-5.20" (-132.08mm)	2nd Driest	Driest since: 1918	1934
Sep 1917–Jul 1918 11-Month	22.13" (562.10mm)	27.33" (694.18mm)	-5.20" (-132.08mm)	126th Wettest	Wettest since: 1917	2019
Aug 1917–Jul 1918 12-Month	24.57" (624.08mm)	29.95" (760.73mm)	-5.38" (-136.65mm)	1st Driest	Driest since: 1918	1918
Aug 1917–Jul 1918 12-Month	24.57" (624.08mm)	29.95" (760.73mm)	-5.38" (-136.65mm)	127th Wettest	Wettest since: 1917	2019
Feb 1917–Jul 1918 18-Month	39.13" (993.90mm)	45.74" (1,161.80mm)	-6.61" (-167.90mm)	3rd Driest	Driest since: 1911	1931
Feb 1917–Jul 1918 18-Month	39.13" (993.90mm)	45.74" (1,161.80mm)	-6.61" (-167.90mm)	125th Wettest	Wettest since: 1917	2019
Aug 1916–Jul 1918 24-Month	51.62" (1,311.15mm)	59.92" (1,521.97mm)	-8.30" (-210.82mm)	1st Driest	Driest since: 1918	1918
Aug 1916–Jul 1918 24-Month	51.62" (1,311.15mm)	59.92" (1,521.97mm)	-8.30" (-210.82mm)	126th Wettest	Wettest since: 1917	2020
Aug 1915–Jul 1918 36-Month	83.52" (2,121.41mm)	89.88" (2,282.95mm)	-6.36" (-161.54mm)	11th Driest	Driest since: 1911	1956
Aug 1915–Jul 1918 36-Month	83.52" (2,121.41mm)	89.88" (2,282.95mm)	-6.36" (-161.54mm)	115th Wettest	Wettest since: 1917	2019
Aug 1914–Jul 1918 48-Month	115.38" (2,930.65mm)	119.78" (3,042.41mm)	-4.40" (-111.76mm)	24th Driest	Driest since: 1913	1956
Aug 1914–Jul 1918 48-Month	115.38" (2,930.65mm)	119.78" (3,042.41mm)	-4.40" (-111.76mm)	101st Wettest	Wettest since: 1917	2019
Aug 1913–Jul 1918 60-Month	144.49" (3,670.05mm)	149.64" (3,800.86mm)	-5.15" (-130.81mm)	20th Driest	Driest since: 1914	1934
Aug 1913–Jul 1918 60-Month	144.49" (3,670.05mm)	149.64" (3,800.86mm)	-5.15" (-130.81mm)	104th Wettest	Wettest since: 1917	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on February 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings