Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Maryland

Precipitation Rankings, May 1931

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1931 1-Month	4.29" (108.97mm)	3.73" (94.74mm)	0.56" (14.23mm)	81st Driest	Driest since: 1930	1964
	4.29" (108.97mm)	3.73" (94.74mm)	0.56" (14.23mm)	48th Wettest	Wettest since: 1924	2018
	Ties: 1974
Apr–May 1931 2-Month	7.27" (184.66mm)	7.21" (183.13mm)	0.06" (1.53mm)	64th Driest	Driest since: 1930	1963
Apr–May 1931 2-Month	7.27" (184.66mm)	7.21" (183.13mm)	0.06" (1.53mm)	65th Wettest	Wettest since: 1929	1983
Mar–May 1931 3-Month	11.62" (295.15mm)	10.99" (279.15mm)	0.63" (16.00mm)	84th Driest	Driest since: 1930	1986
Mar–May 1931 3-Month	11.62" (295.15mm)	10.99" (279.15mm)	0.63" (16.00mm)	45th Wettest	Wettest since: 1929	1983
Feb–May 1931 4-Month	13.26" (336.80mm)	13.88" (352.55mm)	-0.62" (-15.75mm)	50th Driest	Driest since: 1930	2006
Feb–May 1931 4-Month	13.26" (336.80mm)	13.88" (352.55mm)	-0.62" (-15.75mm)	79th Wettest	Wettest since: 1929	1983
Jan–May 1931 5-Month	14.98" (380.49mm)	17.23" (437.64mm)	-2.25" (-57.15mm)	30th Driest	Driest since: 1930	1969
	14.98" (380.49mm)	17.23" (437.64mm)	-2.25" (-57.15mm)	99th Wettest	Wettest since: 1929	1998
	Ties: 1914
Dec 1930–May 1931 6-Month	17.49" (444.25mm)	20.52" (521.21mm)	-3.03" (-76.96mm)	27th Driest	Driest since: 1930	1986
Dec 1930–May 1931 6-Month	17.49" (444.25mm)	20.52" (521.21mm)	-3.03" (-76.96mm)	101st Wettest	Wettest since: 1929	1984
Nov 1930–May 1931 7-Month	18.71" (475.23mm)	23.51" (597.15mm)	-4.80" (-121.92mm)	15th Driest	Driest since: 1930	1977
Nov 1930–May 1931 7-Month	18.71" (475.23mm)	23.51" (597.15mm)	-4.80" (-121.92mm)	113th Wettest	Wettest since: 1929	1998
Oct 1930–May 1931 8-Month	19.64" (498.86mm)	26.64" (676.66mm)	-7.00" (-177.80mm)	3rd Driest	Driest since: 1925	1925
Oct 1930–May 1931 8-Month	19.64" (498.86mm)	26.64" (676.66mm)	-7.00" (-177.80mm)	125th Wettest	Wettest since: 1930	1984
Sep 1930–May 1931 9-Month	21.00" (533.40mm)	30.19" (766.83mm)	-9.19" (-233.43mm)	2nd Driest	Driest since: 1931	2002
Sep 1930–May 1931 9-Month	21.00" (533.40mm)	30.19" (766.83mm)	-9.19" (-233.43mm)	126th Wettest	Wettest since: 1930	2019
Aug 1930–May 1931 10-Month	22.00" (558.80mm)	34.56" (877.82mm)	-12.56" (-319.02mm)	1st Driest	Driest since: 1931	1931
Aug 1930–May 1931 10-Month	22.00" (558.80mm)	34.56" (877.82mm)	-12.56" (-319.02mm)	127th Wettest	Wettest since: 1930	2019
Jul 1930–May 1931 11-Month	23.58" (598.93mm)	38.72" (983.49mm)	-15.14" (-384.56mm)	1st Driest	Driest since: 1931	1931
Jul 1930–May 1931 11-Month	23.58" (598.93mm)	38.72" (983.49mm)	-15.14" (-384.56mm)	127th Wettest	Wettest since: 1930	2019
Jun 1930–May 1931 12-Month	26.72" (678.69mm)	42.56" (1,081.02mm)	-15.84" (-402.33mm)	1st Driest	Driest since: 1931	1931
Jun 1930–May 1931 12-Month	26.72" (678.69mm)	42.56" (1,081.02mm)	-15.84" (-402.33mm)	127th Wettest	Wettest since: 1930	2019
Dec 1929–May 1931 18-Month	40.64" (1,032.26mm)	63.04" (1,601.22mm)	-22.40" (-568.96mm)	1st Driest	Driest since: 1931	1931
Dec 1929–May 1931 18-Month	40.64" (1,032.26mm)	63.04" (1,601.22mm)	-22.40" (-568.96mm)	126th Wettest	Wettest since: 1930	2019
Jun 1929–May 1931 24-Month	61.19" (1,554.23mm)	85.05" (2,160.27mm)	-23.86" (-606.04mm)	1st Driest	Driest since: 1931	1931
Jun 1929–May 1931 24-Month	61.19" (1,554.23mm)	85.05" (2,160.27mm)	-23.86" (-606.04mm)	126th Wettest	Wettest since: 1930	2019
Jun 1928–May 1931 36-Month	108.28" (2,750.31mm)	127.65" (3,242.31mm)	-19.37" (-492.00mm)	4th Driest	Driest since: 1931	1967
Jun 1928–May 1931 36-Month	108.28" (2,750.31mm)	127.65" (3,242.31mm)	-19.37" (-492.00mm)	122nd Wettest	Wettest since: 1930	2021
Jun 1927–May 1931 48-Month	149.64" (3,800.86mm)	170.18" (4,322.57mm)	-20.54" (-521.71mm)	6th Driest	Driest since: 1931	1966
Jun 1927–May 1931 48-Month	149.64" (3,800.86mm)	170.18" (4,322.57mm)	-20.54" (-521.71mm)	119th Wettest	Wettest since: 1930	2021
Jun 1926–May 1931 60-Month	194.86" (4,949.44mm)	212.57" (5,399.28mm)	-17.71" (-449.84mm)	7th Driest	Driest since: 1931	1969
Jun 1926–May 1931 60-Month	194.86" (4,949.44mm)	212.57" (5,399.28mm)	-17.71" (-449.84mm)	117th Wettest	Wettest since: 1930	2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings