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, April 1991

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
April 1991 1-Month	2.47" (62.74mm)	3.48" (88.39mm)	-1.01" (-25.65mm)	29th Driest	Driest since: 1986	1985
April 1991 1-Month	2.47" (62.74mm)	3.48" (88.39mm)	-1.01" (-25.65mm)	101st Wettest	Wettest since: 1990	1983
Mar–Apr 1991 2-Month	7.27" (184.66mm)	7.26" (184.40mm)	0.01" (0.26mm)	73rd Driest	Driest since: 1990	1915
Mar–Apr 1991 2-Month	7.27" (184.66mm)	7.26" (184.40mm)	0.01" (0.26mm)	57th Wettest	Wettest since: 1989	1983
Feb–Apr 1991 3-Month	8.56" (217.42mm)	10.15" (257.81mm)	-1.59" (-40.39mm)	33rd Driest	Driest since: 1987	2006
Feb–Apr 1991 3-Month	8.56" (217.42mm)	10.15" (257.81mm)	-1.59" (-40.39mm)	97th Wettest	Wettest since: 1990	1983
Jan–Apr 1991 4-Month	12.27" (311.66mm)	13.51" (343.15mm)	-1.24" (-31.49mm)	48th Driest	Driest since: 1988	1985
Jan–Apr 1991 4-Month	12.27" (311.66mm)	13.51" (343.15mm)	-1.24" (-31.49mm)	82nd Wettest	Wettest since: 1990	1998
Dec 1990–Apr 1991 5-Month	17.18" (436.37mm)	16.79" (426.47mm)	0.39" (9.90mm)	73rd Driest	Driest since: 1990	1985
Dec 1990–Apr 1991 5-Month	17.18" (436.37mm)	16.79" (426.47mm)	0.39" (9.90mm)	56th Wettest	Wettest since: 1987	1937
Nov 1990–Apr 1991 6-Month	19.17" (486.92mm)	19.78" (502.41mm)	-0.61" (-15.49mm)	67th Driest	Driest since: 1990	1977
Nov 1990–Apr 1991 6-Month	19.17" (486.92mm)	19.78" (502.41mm)	-0.61" (-15.49mm)	62nd Wettest	Wettest since: 1989	1998
Oct 1990–Apr 1991 7-Month	23.48" (596.39mm)	22.91" (581.91mm)	0.57" (14.48mm)	78th Driest	Driest since: 1990	2002
Oct 1990–Apr 1991 7-Month	23.48" (596.39mm)	22.91" (581.91mm)	0.57" (14.48mm)	51st Wettest	Wettest since: 1987	1984
Sep 1990–Apr 1991 8-Month	25.50" (647.70mm)	26.46" (672.08mm)	-0.96" (-24.38mm)	62nd Driest	Driest since: 1989	1931
Sep 1990–Apr 1991 8-Month	25.50" (647.70mm)	26.46" (672.08mm)	-0.96" (-24.38mm)	67th Wettest	Wettest since: 1990	2019
Aug 1990–Apr 1991 9-Month	31.45" (798.83mm)	30.83" (783.08mm)	0.62" (15.75mm)	76th Driest	Driest since: 1990	1931
Aug 1990–Apr 1991 9-Month	31.45" (798.83mm)	30.83" (783.08mm)	0.62" (15.75mm)	53rd Wettest	Wettest since: 1987	2019
Jul 1990–Apr 1991 10-Month	36.27" (921.26mm)	34.99" (888.75mm)	1.28" (32.51mm)	77th Driest	Driest since: 1990	1931
Jul 1990–Apr 1991 10-Month	36.27" (921.26mm)	34.99" (888.75mm)	1.28" (32.51mm)	52nd Wettest	Wettest since: 1984	2019
Jun 1990–Apr 1991 11-Month	38.97" (989.84mm)	38.83" (986.28mm)	0.14" (3.56mm)	65th Driest	Driest since: 1989	1931
	38.97" (989.84mm)	38.83" (986.28mm)	0.14" (3.56mm)	64th Wettest	Wettest since: 1990	2019
	Ties: 1928
May 1990–Apr 1991 12-Month	45.90" (1,165.86mm)	42.55" (1,080.77mm)	3.35" (85.09mm)	93rd Driest	Driest since: 1989	1931
May 1990–Apr 1991 12-Month	45.90" (1,165.86mm)	42.55" (1,080.77mm)	3.35" (85.09mm)	36th Wettest	Wettest since: 1990	2019
Nov 1989–Apr 1991 18-Month	62.81" (1,595.37mm)	62.30" (1,582.42mm)	0.51" (12.95mm)	66th Driest	Driest since: 1989	1931
Nov 1989–Apr 1991 18-Month	62.81" (1,595.37mm)	62.30" (1,582.42mm)	0.51" (12.95mm)	62nd Wettest	Wettest since: 1990	2004
May 1989–Apr 1991 24-Month	95.15" (2,416.81mm)	85.06" (2,160.52mm)	10.09" (256.29mm)	110th Driest	Driest since: 1990	1931
May 1989–Apr 1991 24-Month	95.15" (2,416.81mm)	85.06" (2,160.52mm)	10.09" (256.29mm)	18th Wettest	Wettest since: 1980	2019
May 1988–Apr 1991 36-Month	135.87" (3,451.10mm)	127.66" (3,242.56mm)	8.21" (208.54mm)	94th Driest	Driest since: 1990	1967
May 1988–Apr 1991 36-Month	135.87" (3,451.10mm)	127.66" (3,242.56mm)	8.21" (208.54mm)	33rd Wettest	Wettest since: 1980	2021
May 1987–Apr 1991 48-Month	173.51" (4,407.15mm)	170.21" (4,323.33mm)	3.30" (83.82mm)	69th Driest	Driest since: 1990	1968
May 1987–Apr 1991 48-Month	173.51" (4,407.15mm)	170.21" (4,323.33mm)	3.30" (83.82mm)	57th Wettest	Wettest since: 1986	2021
May 1986–Apr 1991 60-Month	212.23" (5,390.64mm)	212.58" (5,399.53mm)	-0.35" (-8.89mm)	49th Driest	Driest since: 1990	1967
May 1986–Apr 1991 60-Month	212.23" (5,390.64mm)	212.58" (5,399.53mm)	-0.35" (-8.89mm)	76th Wettest	Wettest since: 1987	2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings