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 1966

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1966 1-Month	2.24" (56.90mm)	2.91" (73.91mm)	-0.67" (-17.01mm)	9th Driest	Driest since: 1940	1934
May 1966 1-Month	2.24" (56.90mm)	2.91" (73.91mm)	-0.67" (-17.01mm)	120th Wettest	Wettest since: 1965	2019
Apr–May 1966 2-Month	4.73" (120.14mm)	5.43" (137.92mm)	-0.70" (-17.78mm)	21st Driest	Driest since: 1963	1934
	4.73" (120.14mm)	5.43" (137.92mm)	-0.70" (-17.78mm)	108th Wettest	Wettest since: 1965	1957
	Ties: 2012
Mar–May 1966 3-Month	6.34" (161.04mm)	7.94" (201.68mm)	-1.60" (-40.64mm)	4th Driest	Driest since: 1934	1925
Mar–May 1966 3-Month	6.34" (161.04mm)	7.94" (201.68mm)	-1.60" (-40.64mm)	125th Wettest	Wettest since: 1965	1957, 1991
Feb–May 1966 4-Month	8.68" (220.47mm)	10.07" (255.78mm)	-1.39" (-35.31mm)	9th Driest	Driest since: 1934	1925
Feb–May 1966 4-Month	8.68" (220.47mm)	10.07" (255.78mm)	-1.39" (-35.31mm)	120th Wettest	Wettest since: 1965	2019
Jan–May 1966 5-Month	11.04" (280.42mm)	12.39" (314.71mm)	-1.35" (-34.29mm)	12th Driest	Driest since: 1963	1934
Jan–May 1966 5-Month	11.04" (280.42mm)	12.39" (314.71mm)	-1.35" (-34.29mm)	117th Wettest	Wettest since: 1965	2019
Dec 1965–May 1966 6-Month	13.20" (335.28mm)	14.73" (374.14mm)	-1.53" (-38.86mm)	15th Driest	Driest since: 1963	1931
Dec 1965–May 1966 6-Month	13.20" (335.28mm)	14.73" (374.14mm)	-1.53" (-38.86mm)	113th Wettest	Wettest since: 1965	2019
Nov 1965–May 1966 7-Month	15.20" (386.08mm)	16.96" (430.78mm)	-1.76" (-44.70mm)	13th Driest	Driest since: 1963	1934
Nov 1965–May 1966 7-Month	15.20" (386.08mm)	16.96" (430.78mm)	-1.76" (-44.70mm)	115th Wettest	Wettest since: 1965	1983
Oct 1965–May 1966 8-Month	16.65" (422.91mm)	19.13" (485.90mm)	-2.48" (-62.99mm)	11th Driest	Driest since: 1963	1934
Oct 1965–May 1966 8-Month	16.65" (422.91mm)	19.13" (485.90mm)	-2.48" (-62.99mm)	117th Wettest	Wettest since: 1965	2019
Sep 1965–May 1966 9-Month	20.18" (512.57mm)	21.62" (549.15mm)	-1.44" (-36.58mm)	28th Driest	Driest since: 1964	1934
Sep 1965–May 1966 9-Month	20.18" (512.57mm)	21.62" (549.15mm)	-1.44" (-36.58mm)	100th Wettest	Wettest since: 1965	2019
Aug 1965–May 1966 10-Month	22.98" (583.69mm)	24.25" (615.95mm)	-1.27" (-32.26mm)	35th Driest	Driest since: 1964	1918
Aug 1965–May 1966 10-Month	22.98" (583.69mm)	24.25" (615.95mm)	-1.27" (-32.26mm)	93rd Wettest	Wettest since: 1965	2019
Jul 1965–May 1966 11-Month	25.71" (653.03mm)	27.03" (686.56mm)	-1.32" (-33.53mm)	33rd Driest	Driest since: 1964	1931
Jul 1965–May 1966 11-Month	25.71" (653.03mm)	27.03" (686.56mm)	-1.32" (-33.53mm)	95th Wettest	Wettest since: 1965	2019
Jun 1965–May 1966 12-Month	28.95" (735.33mm)	29.95" (760.73mm)	-1.00" (-25.40mm)	40th Driest	Driest since: 1964	1934
Jun 1965–May 1966 12-Month	28.95" (735.33mm)	29.95" (760.73mm)	-1.00" (-25.40mm)	88th Wettest	Wettest since: 1965	2019
Dec 1964–May 1966 18-Month	44.17" (1,121.92mm)	44.70" (1,135.38mm)	-0.53" (-13.46mm)	53rd Driest	Driest since: 1965	1931
Dec 1964–May 1966 18-Month	44.17" (1,121.92mm)	44.70" (1,135.38mm)	-0.53" (-13.46mm)	74th Wettest	Wettest since: 1962	2019
Jun 1964–May 1966 24-Month	58.74" (1,492.00mm)	59.92" (1,521.97mm)	-1.18" (-29.97mm)	41st Driest	Driest since: 1965	1931
Jun 1964–May 1966 24-Month	58.74" (1,492.00mm)	59.92" (1,521.97mm)	-1.18" (-29.97mm)	86th Wettest	Wettest since: 1962	2020
Jun 1963–May 1966 36-Month	86.37" (2,193.80mm)	89.88" (2,282.95mm)	-3.51" (-89.15mm)	24th Driest	Driest since: 1965	1955
Jun 1963–May 1966 36-Month	86.37" (2,193.80mm)	89.88" (2,282.95mm)	-3.51" (-89.15mm)	102nd Wettest	Wettest since: 1963	2019
Jun 1962–May 1966 48-Month	113.70" (2,887.98mm)	119.78" (3,042.41mm)	-6.08" (-154.43mm)	9th Driest	Driest since: 1957	1956
Jun 1962–May 1966 48-Month	113.70" (2,887.98mm)	119.78" (3,042.41mm)	-6.08" (-154.43mm)	116th Wettest	Wettest since: 1965	2019
Jun 1961–May 1966 60-Month	144.05" (3,658.87mm)	149.64" (3,800.86mm)	-5.59" (-141.99mm)	16th Driest	Driest since: 1958	1957
Jun 1961–May 1966 60-Month	144.05" (3,658.87mm)	149.64" (3,800.86mm)	-5.59" (-141.99mm)	108th Wettest	Wettest since: 1965	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on June 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings