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, May 1906

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1906 1-Month	3.16" (80.26mm)	2.91" (73.91mm)	0.25" (6.35mm)	88th Driest	Driest since: 1904	1934
	3.16" (80.26mm)	2.91" (73.91mm)	0.25" (6.35mm)	41st Wettest	Wettest since: 1905	2019
	Ties: 1942
Apr–May 1906 2-Month	5.24" (133.10mm)	5.43" (137.92mm)	-0.19" (-4.82mm)	52nd Driest	Driest since: 1904	1934
	5.24" (133.10mm)	5.43" (137.92mm)	-0.19" (-4.82mm)	77th Wettest	Wettest since: 1905	1957
	Ties: 2007
Mar–May 1906 3-Month	8.50" (215.90mm)	7.94" (201.68mm)	0.56" (14.22mm)	99th Driest	Driest since: 1904	1925
Mar–May 1906 3-Month	8.50" (215.90mm)	7.94" (201.68mm)	0.56" (14.22mm)	30th Wettest	Wettest since: 1905	1957, 1991
Feb–May 1906 4-Month	10.22" (259.59mm)	10.07" (255.78mm)	0.15" (3.81mm)	75th Driest	Driest since: 1901	1925
Feb–May 1906 4-Month	10.22" (259.59mm)	10.07" (255.78mm)	0.15" (3.81mm)	54th Wettest	Wettest since: 1905	2019
Jan–May 1906 5-Month	12.75" (323.85mm)	12.39" (314.71mm)	0.36" (9.14mm)	83rd Driest	Driest since: 1904	1934
Jan–May 1906 5-Month	12.75" (323.85mm)	12.39" (314.71mm)	0.36" (9.14mm)	46th Wettest	Wettest since: 1905	2019
Dec 1905–May 1906 6-Month	15.05" (382.27mm)	14.73" (374.14mm)	0.32" (8.13mm)	72nd Driest	Driest since: 1904	1931
Dec 1905–May 1906 6-Month	15.05" (382.27mm)	14.73" (374.14mm)	0.32" (8.13mm)	56th Wettest	Wettest since: 1905	2019
Nov 1905–May 1906 7-Month	17.24" (437.90mm)	16.96" (430.78mm)	0.28" (7.12mm)	74th Driest	Driest since: 1905	1934
Nov 1905–May 1906 7-Month	17.24" (437.90mm)	16.96" (430.78mm)	0.28" (7.12mm)	54th Wettest	Wettest since: 1903	1983
Oct 1905–May 1906 8-Month	19.41" (493.01mm)	19.13" (485.90mm)	0.28" (7.11mm)	69th Driest	Driest since: 1905	1934
Oct 1905–May 1906 8-Month	19.41" (493.01mm)	19.13" (485.90mm)	0.28" (7.11mm)	59th Wettest	Wettest since: 1903	2019
Sep 1905–May 1906 9-Month	21.98" (558.29mm)	21.62" (549.15mm)	0.36" (9.14mm)	70th Driest	Driest since: 1905	1934
Sep 1905–May 1906 9-Month	21.98" (558.29mm)	21.62" (549.15mm)	0.36" (9.14mm)	58th Wettest	Wettest since: 1903	2019
Aug 1905–May 1906 10-Month	24.52" (622.81mm)	24.25" (615.95mm)	0.27" (6.86mm)	68th Driest	Driest since: 1905	1918
Aug 1905–May 1906 10-Month	24.52" (622.81mm)	24.25" (615.95mm)	0.27" (6.86mm)	60th Wettest	Wettest since: 1903	2019
Jul 1905–May 1906 11-Month	28.04" (712.22mm)	27.03" (686.56mm)	1.01" (25.66mm)	86th Driest	Driest since: 1905	1931
Jul 1905–May 1906 11-Month	28.04" (712.22mm)	27.03" (686.56mm)	1.01" (25.66mm)	42nd Wettest	Wettest since: 1903	2019
Jun 1905–May 1906 12-Month	31.34" (796.04mm)	29.95" (760.73mm)	1.39" (35.31mm)	91st Driest	Driest since: 1905	1934
Jun 1905–May 1906 12-Month	31.34" (796.04mm)	29.95" (760.73mm)	1.39" (35.31mm)	37th Wettest	Wettest since: 1903	2019
Dec 1904–May 1906 18-Month	47.51" (1,206.75mm)	44.70" (1,135.38mm)	2.81" (71.37mm)	100th Driest	Driest since: 1905	1931
Dec 1904–May 1906 18-Month	47.51" (1,206.75mm)	44.70" (1,135.38mm)	2.81" (71.37mm)	27th Wettest	Wettest to Date	2019
Jun 1904–May 1906 24-Month	61.25" (1,555.75mm)	59.92" (1,521.97mm)	1.33" (33.78mm)	81st Driest	Driest since: 1905	1931
Jun 1904–May 1906 24-Month	61.25" (1,555.75mm)	59.92" (1,521.97mm)	1.33" (33.78mm)	46th Wettest	Wettest to Date	2020
Jun 1903–May 1906 36-Month	89.35" (2,269.49mm)	89.88" (2,282.95mm)	-0.53" (-13.46mm)	55th Driest	Driest since: 1904	1955
Jun 1903–May 1906 36-Month	89.35" (2,269.49mm)	89.88" (2,282.95mm)	-0.53" (-13.46mm)	71st Wettest	Wettest since: 1905	2019
Jun 1902–May 1906 48-Month	121.53" (3,086.86mm)	119.78" (3,042.41mm)	1.75" (44.45mm)	74th Driest	Driest since: 1905	1956
Jun 1902–May 1906 48-Month	121.53" (3,086.86mm)	119.78" (3,042.41mm)	1.75" (44.45mm)	51st Wettest	Wettest to Date	2019
Jun 1901–May 1906 60-Month	149.32" (3,792.73mm)	149.64" (3,800.86mm)	-0.32" (-8.13mm)	58th Driest	Driest since: 1905	1957
Jun 1901–May 1906 60-Month	149.32" (3,792.73mm)	149.64" (3,800.86mm)	-0.32" (-8.13mm)	66th Wettest	Wettest to Date	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings