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 1940

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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 1940 1-Month	5.98" (151.89mm)	3.48" (88.39mm)	2.50" (63.50mm)	124th Driest	Driest since: 1939	1985
April 1940 1-Month	5.98" (151.89mm)	3.48" (88.39mm)	2.50" (63.50mm)	6th Wettest	Wettest since: 1937	1983
Mar–Apr 1940 2-Month	9.84" (249.94mm)	7.26" (184.40mm)	2.58" (65.54mm)	120th Driest	Driest since: 1939	1915
Mar–Apr 1940 2-Month	9.84" (249.94mm)	7.26" (184.40mm)	2.58" (65.54mm)	10th Wettest	Wettest since: 1924	1983
Feb–Apr 1940 3-Month	12.83" (325.88mm)	10.15" (257.81mm)	2.68" (68.07mm)	113th Driest	Driest since: 1938	2006
Feb–Apr 1940 3-Month	12.83" (325.88mm)	10.15" (257.81mm)	2.68" (68.07mm)	17th Wettest	Wettest since: 1939	1983
Jan–Apr 1940 4-Month	15.27" (387.86mm)	13.51" (343.15mm)	1.76" (44.71mm)	100th Driest	Driest since: 1938	1985
Jan–Apr 1940 4-Month	15.27" (387.86mm)	13.51" (343.15mm)	1.76" (44.71mm)	30th Wettest	Wettest since: 1939	1998
Dec 1939–Apr 1940 5-Month	17.23" (437.64mm)	16.79" (426.47mm)	0.44" (11.17mm)	74th Driest	Driest since: 1938	1985
Dec 1939–Apr 1940 5-Month	17.23" (437.64mm)	16.79" (426.47mm)	0.44" (11.17mm)	55th Wettest	Wettest since: 1939	1937
Nov 1939–Apr 1940 6-Month	18.67" (474.22mm)	19.78" (502.41mm)	-1.11" (-28.19mm)	59th Driest	Driest since: 1938	1977
Nov 1939–Apr 1940 6-Month	18.67" (474.22mm)	19.78" (502.41mm)	-1.11" (-28.19mm)	70th Wettest	Wettest since: 1939	1998
Oct 1939–Apr 1940 7-Month	23.62" (599.95mm)	22.91" (581.91mm)	0.71" (18.04mm)	81st Driest	Driest since: 1938	2002
Oct 1939–Apr 1940 7-Month	23.62" (599.95mm)	22.91" (581.91mm)	0.71" (18.04mm)	48th Wettest	Wettest since: 1939	1984
Sep 1939–Apr 1940 8-Month	26.75" (679.45mm)	26.46" (672.08mm)	0.29" (7.37mm)	74th Driest	Driest since: 1938	1931
Sep 1939–Apr 1940 8-Month	26.75" (679.45mm)	26.46" (672.08mm)	0.29" (7.37mm)	55th Wettest	Wettest since: 1939	2019
Aug 1939–Apr 1940 9-Month	31.14" (790.96mm)	30.83" (783.08mm)	0.31" (7.88mm)	73rd Driest	Driest since: 1938	1931
Aug 1939–Apr 1940 9-Month	31.14" (790.96mm)	30.83" (783.08mm)	0.31" (7.88mm)	56th Wettest	Wettest since: 1939	2019
Jul 1939–Apr 1940 10-Month	35.03" (889.76mm)	34.99" (888.75mm)	0.04" (1.01mm)	67th Driest	Driest since: 1938	1931
Jul 1939–Apr 1940 10-Month	35.03" (889.76mm)	34.99" (888.75mm)	0.04" (1.01mm)	62nd Wettest	Wettest since: 1939	2019
Jun 1939–Apr 1940 11-Month	39.96" (1,014.98mm)	38.83" (986.28mm)	1.13" (28.70mm)	73rd Driest	Driest since: 1932	1931
Jun 1939–Apr 1940 11-Month	39.96" (1,014.98mm)	38.83" (986.28mm)	1.13" (28.70mm)	56th Wettest	Wettest since: 1939	2019
May 1939–Apr 1940 12-Month	41.07" (1,043.18mm)	42.55" (1,080.77mm)	-1.48" (-37.59mm)	45th Driest	Driest since: 1931	1931
May 1939–Apr 1940 12-Month	41.07" (1,043.18mm)	42.55" (1,080.77mm)	-1.48" (-37.59mm)	84th Wettest	Wettest since: 1939	2019
Nov 1938–Apr 1940 18-Month	64.68" (1,642.87mm)	62.30" (1,582.42mm)	2.38" (60.45mm)	81st Driest	Driest since: 1935	1931
Nov 1938–Apr 1940 18-Month	64.68" (1,642.87mm)	62.30" (1,582.42mm)	2.38" (60.45mm)	47th Wettest	Wettest since: 1939	2004
May 1938–Apr 1940 24-Month	91.28" (2,318.51mm)	85.06" (2,160.52mm)	6.22" (157.99mm)	95th Driest	Driest since: 1938	1931
May 1938–Apr 1940 24-Month	91.28" (2,318.51mm)	85.06" (2,160.52mm)	6.22" (157.99mm)	33rd Wettest	Wettest since: 1939	2019
May 1937–Apr 1940 36-Month	134.80" (3,423.92mm)	127.66" (3,242.56mm)	7.14" (181.36mm)	88th Driest	Driest since: 1933	1967
May 1937–Apr 1940 36-Month	134.80" (3,423.92mm)	127.66" (3,242.56mm)	7.14" (181.36mm)	39th Wettest	Wettest since: 1939	2021
May 1936–Apr 1940 48-Month	180.11" (4,574.79mm)	170.21" (4,323.33mm)	9.90" (251.46mm)	95th Driest	Driest since: 1934	1968
May 1936–Apr 1940 48-Month	180.11" (4,574.79mm)	170.21" (4,323.33mm)	9.90" (251.46mm)	31st Wettest	Wettest since: 1939	2021
May 1935–Apr 1940 60-Month	232.24" (5,898.90mm)	212.58" (5,399.53mm)	19.66" (499.37mm)	106th Driest	Driest since: 1935	1967
May 1935–Apr 1940 60-Month	232.24" (5,898.90mm)	212.58" (5,399.53mm)	19.66" (499.37mm)	19th Wettest	Wettest since: 1939	2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings