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, October 1970

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
October 1970 1-Month	2.88" (73.15mm)	2.16" (54.86mm)	0.72" (18.29mm)	111th Driest	Driest since: 1969	1952
October 1970 1-Month	2.88" (73.15mm)	2.16" (54.86mm)	0.72" (18.29mm)	18th Wettest	Wettest since: 1959	2009
Sep–Oct 1970 2-Month	5.94" (150.88mm)	4.65" (118.11mm)	1.29" (32.77mm)	121st Driest	Driest since: 1969	1952
Sep–Oct 1970 2-Month	5.94" (150.88mm)	4.65" (118.11mm)	1.29" (32.77mm)	8th Wettest	Wettest since: 1959	2018
Aug–Oct 1970 3-Month	8.31" (211.07mm)	7.27" (184.66mm)	1.04" (26.41mm)	113th Driest	Driest since: 1969	1952
	8.31" (211.07mm)	7.27" (184.66mm)	1.04" (26.41mm)	16th Wettest	Wettest since: 1959	2018
	Ties: 1971
Jul–Oct 1970 4-Month	10.72" (272.29mm)	10.05" (255.27mm)	0.67" (17.02mm)	91st Driest	Driest since: 1969	1952
Jul–Oct 1970 4-Month	10.72" (272.29mm)	10.05" (255.27mm)	0.67" (17.02mm)	38th Wettest	Wettest since: 1959	1941
Jun–Oct 1970 5-Month	13.49" (342.65mm)	12.97" (329.44mm)	0.52" (13.21mm)	74th Driest	Driest since: 1968	1952
	13.49" (342.65mm)	12.97" (329.44mm)	0.52" (13.21mm)	55th Wettest	Wettest since: 1969	1941
	Ties: 1925
May–Oct 1970 6-Month	16.10" (408.94mm)	15.88" (403.35mm)	0.22" (5.59mm)	66th Driest	Driest since: 1966	1952
	16.10" (408.94mm)	15.88" (403.35mm)	0.22" (5.59mm)	63rd Wettest	Wettest since: 1969	1941
	Ties: 1935
Apr–Oct 1970 7-Month	18.88" (479.55mm)	18.40" (467.36mm)	0.48" (12.19mm)	73rd Driest	Driest since: 1966	1952
Apr–Oct 1970 7-Month	18.88" (479.55mm)	18.40" (467.36mm)	0.48" (12.19mm)	56th Wettest	Wettest since: 1969	1941
Mar–Oct 1970 8-Month	21.56" (547.62mm)	20.91" (531.11mm)	0.65" (16.51mm)	77th Driest	Driest since: 1969	1956
Mar–Oct 1970 8-Month	21.56" (547.62mm)	20.91" (531.11mm)	0.65" (16.51mm)	52nd Wettest	Wettest since: 1961	2019
Feb–Oct 1970 9-Month	23.19" (589.03mm)	23.04" (585.22mm)	0.15" (3.81mm)	63rd Driest	Driest since: 1969	1934
Feb–Oct 1970 9-Month	23.19" (589.03mm)	23.04" (585.22mm)	0.15" (3.81mm)	66th Wettest	Wettest since: 1965	2019
Jan–Oct 1970 10-Month	25.28" (642.11mm)	25.36" (644.14mm)	-0.08" (-2.03mm)	56th Driest	Driest since: 1968	1934
Jan–Oct 1970 10-Month	25.28" (642.11mm)	25.36" (644.14mm)	-0.08" (-2.03mm)	73rd Wettest	Wettest since: 1969	2019
Dec 1969–Oct 1970 11-Month	28.22" (716.79mm)	27.70" (703.58mm)	0.52" (13.21mm)	72nd Driest	Driest since: 1968	1931
Dec 1969–Oct 1970 11-Month	28.22" (716.79mm)	27.70" (703.58mm)	0.52" (13.21mm)	56th Wettest	Wettest since: 1969	2019
Nov 1969–Oct 1970 12-Month	29.81" (757.17mm)	29.93" (760.22mm)	-0.12" (-3.05mm)	55th Driest	Driest since: 1968	1934
Nov 1969–Oct 1970 12-Month	29.81" (757.17mm)	29.93" (760.22mm)	-0.12" (-3.05mm)	73rd Wettest	Wettest since: 1969	2019
May 1969–Oct 1970 18-Month	46.18" (1,172.97mm)	45.83" (1,164.08mm)	0.35" (8.89mm)	63rd Driest	Driest since: 1967	1931
May 1969–Oct 1970 18-Month	46.18" (1,172.97mm)	45.83" (1,164.08mm)	0.35" (8.89mm)	65th Wettest	Wettest since: 1969	2019
Nov 1968–Oct 1970 24-Month	61.55" (1,563.37mm)	59.90" (1,521.46mm)	1.65" (41.91mm)	83rd Driest	Driest since: 1969	1931
Nov 1968–Oct 1970 24-Month	61.55" (1,563.37mm)	59.90" (1,521.46mm)	1.65" (41.91mm)	44th Wettest	Wettest since: 1959	2019
Nov 1967–Oct 1970 36-Month	90.97" (2,310.64mm)	89.86" (2,282.44mm)	1.11" (28.20mm)	73rd Driest	Driest since: 1969	1956
Nov 1967–Oct 1970 36-Month	90.97" (2,310.64mm)	89.86" (2,282.44mm)	1.11" (28.20mm)	53rd Wettest	Wettest since: 1960	2019
Nov 1966–Oct 1970 48-Month	120.45" (3,059.43mm)	119.78" (3,042.41mm)	0.67" (17.02mm)	62nd Driest	Driest since: 1969	1956
Nov 1966–Oct 1970 48-Month	120.45" (3,059.43mm)	119.78" (3,042.41mm)	0.67" (17.02mm)	63rd Wettest	Wettest since: 1961	2019
Nov 1965–Oct 1970 60-Month	147.52" (3,747.01mm)	149.66" (3,801.36mm)	-2.14" (-54.35mm)	40th Driest	Driest since: 1968	1934
Nov 1965–Oct 1970 60-Month	147.52" (3,747.01mm)	149.66" (3,801.36mm)	-2.14" (-54.35mm)	84th Wettest	Wettest since: 1969	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings