Divisional 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, Climate Division 9. Southeast

Precipitation Rankings, December 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
December 1939 1-Month	0.74" (18.80mm)	1.51" (38.35mm)	-0.77" (-19.55mm)	24th Driest	Driest since: 1929	1976
December 1939 1-Month	0.74" (18.80mm)	1.51" (38.35mm)	-0.77" (-19.55mm)	105th Wettest	Wettest since: 1938	2015
Nov–Dec 1939 2-Month	1.83" (46.48mm)	3.62" (91.95mm)	-1.79" (-45.47mm)	18th Driest	Driest since: 1933	1976
Nov–Dec 1939 2-Month	1.83" (46.48mm)	3.62" (91.95mm)	-1.79" (-45.47mm)	111th Wettest	Wettest since: 1938	2015
Oct–Dec 1939 3-Month	3.31" (84.07mm)	6.23" (158.24mm)	-2.92" (-74.17mm)	15th Driest	Driest since: 1933	1910
Oct–Dec 1939 3-Month	3.31" (84.07mm)	6.23" (158.24mm)	-2.92" (-74.17mm)	114th Wettest	Wettest since: 1938	1941
Sep–Dec 1939 4-Month	3.86" (98.04mm)	10.15" (257.81mm)	-6.29" (-159.77mm)	3rd Driest	Driest to Date	1950
Sep–Dec 1939 4-Month	3.86" (98.04mm)	10.15" (257.81mm)	-6.29" (-159.77mm)	126th Wettest	Wettest since: 1938	1961
Aug–Dec 1939 5-Month	10.57" (268.48mm)	13.87" (352.30mm)	-3.30" (-83.82mm)	27th Driest	Driest since: 1937	1953
	10.57" (268.48mm)	13.87" (352.30mm)	-3.30" (-83.82mm)	102nd Wettest	Wettest since: 1938	1970
	Ties: 1930
Jul–Dec 1939 6-Month	13.21" (335.53mm)	17.85" (453.39mm)	-4.64" (-117.86mm)	23rd Driest	Driest since: 1937	1953
Jul–Dec 1939 6-Month	13.21" (335.53mm)	17.85" (453.39mm)	-4.64" (-117.86mm)	106th Wettest	Wettest since: 1938	1902
Jun–Dec 1939 7-Month	19.05" (483.87mm)	22.46" (570.48mm)	-3.41" (-86.61mm)	37th Driest	Driest since: 1937	1953
Jun–Dec 1939 7-Month	19.05" (483.87mm)	22.46" (570.48mm)	-3.41" (-86.61mm)	92nd Wettest	Wettest since: 1938	1902
May–Dec 1939 8-Month	21.32" (541.53mm)	26.50" (673.10mm)	-5.18" (-131.57mm)	23rd Driest	Driest since: 1937	1953
May–Dec 1939 8-Month	21.32" (541.53mm)	26.50" (673.10mm)	-5.18" (-131.57mm)	106th Wettest	Wettest since: 1938	2010
Apr–Dec 1939 9-Month	25.20" (640.08mm)	29.84" (757.94mm)	-4.64" (-117.86mm)	31st Driest	Driest since: 1937	1953
Apr–Dec 1939 9-Month	25.20" (640.08mm)	29.84" (757.94mm)	-4.64" (-117.86mm)	98th Wettest	Wettest since: 1938	2010
Mar–Dec 1939 10-Month	29.03" (737.36mm)	32.19" (817.63mm)	-3.16" (-80.27mm)	42nd Driest	Driest since: 1937	1901
Mar–Dec 1939 10-Month	29.03" (737.36mm)	32.19" (817.63mm)	-3.16" (-80.27mm)	87th Wettest	Wettest since: 1938	2010
Feb–Dec 1939 11-Month	30.63" (778.00mm)	33.42" (848.87mm)	-2.79" (-70.87mm)	47th Driest	Driest since: 1937	1901
Feb–Dec 1939 11-Month	30.63" (778.00mm)	33.42" (848.87mm)	-2.79" (-70.87mm)	82nd Wettest	Wettest since: 1938	2010
Jan–Dec 1939 12-Month	31.52" (800.61mm)	34.75" (882.65mm)	-3.23" (-82.04mm)	43rd Driest	Driest since: 1937	1901
Jan–Dec 1939 12-Month	31.52" (800.61mm)	34.75" (882.65mm)	-3.23" (-82.04mm)	86th Wettest	Wettest since: 1938	2010
Jul 1938–Dec 1939 18-Month	47.25" (1,200.15mm)	52.63" (1,336.80mm)	-5.38" (-136.65mm)	35th Driest	Driest since: 1937	1956
Jul 1938–Dec 1939 18-Month	47.25" (1,200.15mm)	52.63" (1,336.80mm)	-5.38" (-136.65mm)	93rd Wettest	Wettest since: 1938	2010
Jan 1938–Dec 1939 24-Month	68.81" (1,747.77mm)	69.50" (1,765.30mm)	-0.69" (-17.53mm)	61st Driest	Driest since: 1938	1989
Jan 1938–Dec 1939 24-Month	68.81" (1,747.77mm)	69.50" (1,765.30mm)	-0.69" (-17.53mm)	67th Wettest	Wettest since: 1932	2010
Jan 1937–Dec 1939 36-Month	96.82" (2,459.23mm)	104.23" (2,647.44mm)	-7.41" (-188.21mm)	27th Driest	Driest since: 1938	1989
Jan 1937–Dec 1939 36-Month	96.82" (2,459.23mm)	104.23" (2,647.44mm)	-7.41" (-188.21mm)	100th Wettest	Wettest since: 1933	2010
Jan 1936–Dec 1939 48-Month	122.85" (3,120.39mm)	138.86" (3,527.04mm)	-16.01" (-406.65mm)	12th Driest	Driest since: 1937	1956
Jan 1936–Dec 1939 48-Month	122.85" (3,120.39mm)	138.86" (3,527.04mm)	-16.01" (-406.65mm)	114th Wettest	Wettest since: 1938	2010
Jan 1935–Dec 1939 60-Month	162.93" (4,138.42mm)	173.41" (4,404.61mm)	-10.48" (-266.19mm)	24th Driest	Driest since: 1938	1956
Jan 1935–Dec 1939 60-Month	162.93" (4,138.42mm)	173.41" (4,404.61mm)	-10.48" (-266.19mm)	101st Wettest	Wettest since: 1935	2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings