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.

Iowa

Precipitation Rankings, November 1939

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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
November 1939 1-Month	0.49" (12.45mm)	1.75" (44.45mm)	-1.26" (-32.00mm)	15th Driest	Driest since: 1933	1976
	0.49" (12.45mm)	1.75" (44.45mm)	-1.26" (-32.00mm)	114th Wettest	Wettest since: 1938	1931
	Ties: 1966
Oct–Nov 1939 2-Month	1.97" (50.04mm)	4.04" (102.62mm)	-2.07" (-52.58mm)	16th Driest	Driest since: 1933	1910
Oct–Nov 1939 2-Month	1.97" (50.04mm)	4.04" (102.62mm)	-2.07" (-52.58mm)	113th Wettest	Wettest since: 1938	1931
Sep–Nov 1939 3-Month	2.81" (71.37mm)	7.71" (195.83mm)	-4.90" (-124.46mm)	2nd Driest	Driest to Date	1953
Sep–Nov 1939 3-Month	2.81" (71.37mm)	7.71" (195.83mm)	-4.90" (-124.46mm)	127th Wettest	Wettest since: 1938	1931
Aug–Nov 1939 4-Month	7.48" (189.99mm)	11.55" (293.37mm)	-4.07" (-103.38mm)	9th Driest	Driest since: 1917	1976
Aug–Nov 1939 4-Month	7.48" (189.99mm)	11.55" (293.37mm)	-4.07" (-103.38mm)	120th Wettest	Wettest since: 1938	2018
Jul–Nov 1939 5-Month	10.68" (271.27mm)	15.41" (391.41mm)	-4.73" (-120.14mm)	11th Driest	Driest since: 1930	1976
Jul–Nov 1939 5-Month	10.68" (271.27mm)	15.41" (391.41mm)	-4.73" (-120.14mm)	118th Wettest	Wettest since: 1938	1993
Jun–Nov 1939 6-Month	15.60" (396.24mm)	20.04" (509.02mm)	-4.44" (-112.78mm)	16th Driest	Driest since: 1937	1976
Jun–Nov 1939 6-Month	15.60" (396.24mm)	20.04" (509.02mm)	-4.44" (-112.78mm)	113th Wettest	Wettest since: 1938	1993
May–Nov 1939 7-Month	17.64" (448.06mm)	24.09" (611.89mm)	-6.45" (-163.83mm)	9th Driest	Driest since: 1910	1976
May–Nov 1939 7-Month	17.64" (448.06mm)	24.09" (611.89mm)	-6.45" (-163.83mm)	120th Wettest	Wettest since: 1938	1993
Apr–Nov 1939 8-Month	19.64" (498.86mm)	27.03" (686.56mm)	-7.39" (-187.70mm)	9th Driest	Driest since: 1933	1910
Apr–Nov 1939 8-Month	19.64" (498.86mm)	27.03" (686.56mm)	-7.39" (-187.70mm)	120th Wettest	Wettest since: 1938	1993
Mar–Nov 1939 9-Month	21.27" (540.26mm)	28.99" (736.35mm)	-7.72" (-196.09mm)	5th Driest	Driest since: 1936	1910
Mar–Nov 1939 9-Month	21.27" (540.26mm)	28.99" (736.35mm)	-7.72" (-196.09mm)	124th Wettest	Wettest since: 1938	1993
Feb–Nov 1939 10-Month	23.04" (585.22mm)	30.00" (762.00mm)	-6.96" (-176.78mm)	8th Driest	Driest since: 1936	1910
Feb–Nov 1939 10-Month	23.04" (585.22mm)	30.00" (762.00mm)	-6.96" (-176.78mm)	121st Wettest	Wettest since: 1938	1993
Jan–Nov 1939 11-Month	23.90" (607.06mm)	30.98" (786.89mm)	-7.08" (-179.83mm)	8th Driest	Driest since: 1933	1910
Jan–Nov 1939 11-Month	23.90" (607.06mm)	30.98" (786.89mm)	-7.08" (-179.83mm)	121st Wettest	Wettest since: 1938	1993
Dec 1938–Nov 1939 12-Month	24.59" (624.59mm)	32.08" (814.83mm)	-7.49" (-190.24mm)	7th Driest	Driest since: 1910	1910
Dec 1938–Nov 1939 12-Month	24.59" (624.59mm)	32.08" (814.83mm)	-7.49" (-190.24mm)	121st Wettest	Wettest since: 1938	1993
Jun 1938–Nov 1939 18-Month	46.73" (1,186.94mm)	52.18" (1,325.37mm)	-5.45" (-138.43mm)	28th Driest	Driest since: 1937	1956
Jun 1938–Nov 1939 18-Month	46.73" (1,186.94mm)	52.18" (1,325.37mm)	-5.45" (-138.43mm)	100th Wettest	Wettest since: 1938	2019
Dec 1937–Nov 1939 24-Month	60.96" (1,548.38mm)	64.24" (1,631.70mm)	-3.28" (-83.32mm)	44th Driest	Driest since: 1937	1956
Dec 1937–Nov 1939 24-Month	60.96" (1,548.38mm)	64.24" (1,631.70mm)	-3.28" (-83.32mm)	83rd Wettest	Wettest since: 1938	2019
Dec 1936–Nov 1939 36-Month	89.23" (2,266.44mm)	96.35" (2,447.29mm)	-7.12" (-180.85mm)	21st Driest	Driest since: 1937	1957
Dec 1936–Nov 1939 36-Month	89.23" (2,266.44mm)	96.35" (2,447.29mm)	-7.12" (-180.85mm)	105th Wettest	Wettest since: 1938	2010
Dec 1935–Nov 1939 48-Month	114.20" (2,900.68mm)	128.38" (3,260.85mm)	-14.18" (-360.17mm)	8th Driest	Driest since: 1937	1958
Dec 1935–Nov 1939 48-Month	114.20" (2,900.68mm)	128.38" (3,260.85mm)	-14.18" (-360.17mm)	117th Wettest	Wettest since: 1938	2010
Dec 1934–Nov 1939 60-Month	146.38" (3,718.05mm)	160.36" (4,073.14mm)	-13.98" (-355.09mm)	12th Driest	Driest since: 1937	1956
Dec 1934–Nov 1939 60-Month	146.38" (3,718.05mm)	160.36" (4,073.14mm)	-13.98" (-355.09mm)	112th Wettest	Wettest since: 1938	2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings