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, December 2019

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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 2019 1-Month	1.28" (32.51mm)	1.11" (28.19mm)	0.17" (4.32mm)	82nd Driest	Driest since: 2017	2002
	1.28" (32.51mm)	1.11" (28.19mm)	0.17" (4.32mm)	47th Wettest	Wettest since: 2018	2015
	Ties: 2003
Nov–Dec 2019 2-Month	2.77" (70.36mm)	2.87" (72.90mm)	-0.10" (-2.54mm)	65th Driest	Driest since: 2017	1976
Nov–Dec 2019 2-Month	2.77" (70.36mm)	2.87" (72.90mm)	-0.10" (-2.54mm)	64th Wettest	Wettest since: 2018	2015
Oct–Dec 2019 3-Month	7.55" (191.77mm)	5.16" (131.06mm)	2.39" (60.71mm)	114th Driest	Driest since: 2017	1910
Oct–Dec 2019 3-Month	7.55" (191.77mm)	5.16" (131.06mm)	2.39" (60.71mm)	15th Wettest	Wettest since: 2018	1931
Sep–Dec 2019 4-Month	13.76" (349.50mm)	8.83" (224.28mm)	4.93" (125.22mm)	120th Driest	Driest since: 2017	1939, 1976
Sep–Dec 2019 4-Month	13.76" (349.50mm)	8.83" (224.28mm)	4.93" (125.22mm)	9th Wettest	Wettest since: 2018	1931
Aug–Dec 2019 5-Month	17.29" (439.17mm)	12.67" (321.82mm)	4.62" (117.35mm)	115th Driest	Driest since: 2017	1976
Aug–Dec 2019 5-Month	17.29" (439.17mm)	12.67" (321.82mm)	4.62" (117.35mm)	14th Wettest	Wettest since: 2018	2018
Jul–Dec 2019 6-Month	20.67" (525.02mm)	16.52" (419.61mm)	4.15" (105.41mm)	106th Driest	Driest since: 2017	1976
	20.67" (525.02mm)	16.52" (419.61mm)	4.15" (105.41mm)	23rd Wettest	Wettest since: 2018	2018
	Ties: 1987
Jun–Dec 2019 7-Month	24.58" (624.33mm)	21.15" (537.21mm)	3.43" (87.12mm)	100th Driest	Driest since: 2017	1976
Jun–Dec 2019 7-Month	24.58" (624.33mm)	21.15" (537.21mm)	3.43" (87.12mm)	29th Wettest	Wettest since: 2018	2018
May–Dec 2019 8-Month	32.79" (832.87mm)	25.20" (640.08mm)	7.59" (192.79mm)	121st Driest	Driest since: 2017	1976
May–Dec 2019 8-Month	32.79" (832.87mm)	25.20" (640.08mm)	7.59" (192.79mm)	8th Wettest	Wettest since: 2018	1993
Apr–Dec 2019 9-Month	35.82" (909.83mm)	28.15" (715.01mm)	7.67" (194.82mm)	117th Driest	Driest since: 2017	1910
Apr–Dec 2019 9-Month	35.82" (909.83mm)	28.15" (715.01mm)	7.67" (194.82mm)	12th Wettest	Wettest since: 2018	1993
Mar–Dec 2019 10-Month	38.01" (965.45mm)	30.10" (764.54mm)	7.91" (200.91mm)	117th Driest	Driest since: 2017	1910
Mar–Dec 2019 10-Month	38.01" (965.45mm)	30.10" (764.54mm)	7.91" (200.91mm)	12th Wettest	Wettest since: 2018	1993
Feb–Dec 2019 11-Month	40.35" (1,024.89mm)	31.12" (790.45mm)	9.23" (234.44mm)	119th Driest	Driest since: 2017	1910
Feb–Dec 2019 11-Month	40.35" (1,024.89mm)	31.12" (790.45mm)	9.23" (234.44mm)	10th Wettest	Wettest since: 2018	1993
Jan–Dec 2019 12-Month	41.63" (1,057.40mm)	32.09" (815.09mm)	9.54" (242.31mm)	119th Driest	Driest since: 2017	1910
Jan–Dec 2019 12-Month	41.63" (1,057.40mm)	32.09" (815.09mm)	9.54" (242.31mm)	10th Wettest	Wettest since: 2018	1993
Jul 2018–Dec 2019 18-Month	68.08" (1,729.23mm)	48.69" (1,236.73mm)	19.39" (492.50mm)	126th Driest	Driest since: 2018	1956
Jul 2018–Dec 2019 18-Month	68.08" (1,729.23mm)	48.69" (1,236.73mm)	19.39" (492.50mm)	2nd Wettest	Wettest since: 1993	1993
Jan 2018–Dec 2019 24-Month	86.71" (2,202.43mm)	64.24" (1,631.70mm)	22.47" (570.73mm)	127th Driest	Driest since: 2018	1989
Jan 2018–Dec 2019 24-Month	86.71" (2,202.43mm)	64.24" (1,631.70mm)	22.47" (570.73mm)	1st Wettest	Wettest to Date	2019
Jan 2017–Dec 2019 36-Month	119.07" (3,024.38mm)	96.36" (2,447.54mm)	22.71" (576.84mm)	122nd Driest	Driest since: 2018	1957
Jan 2017–Dec 2019 36-Month	119.07" (3,024.38mm)	96.36" (2,447.54mm)	22.71" (576.84mm)	5th Wettest	Wettest since: 2016	2010
Jan 2016–Dec 2019 48-Month	157.17" (3,992.12mm)	128.37" (3,260.60mm)	28.80" (731.52mm)	121st Driest	Driest since: 2017	1958
Jan 2016–Dec 2019 48-Month	157.17" (3,992.12mm)	128.37" (3,260.60mm)	28.80" (731.52mm)	5th Wettest	Wettest since: 2018	2010
Jan 2015–Dec 2019 60-Month	199.70" (5,072.38mm)	160.36" (4,073.14mm)	39.34" (999.24mm)	122nd Driest	Driest since: 2018	1956
Jan 2015–Dec 2019 60-Month	199.70" (5,072.38mm)	160.36" (4,073.14mm)	39.34" (999.24mm)	3rd Wettest	Wettest since: 2011	2010

Citing This Page

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