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 1956

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2021)	Wettest/Driest Since	Record
December 1956 1-Month	0.52" (13.21mm)	1.11" (28.19mm)	-0.59" (-14.98mm)	17th Driest	Driest since: 1955	2002
	0.52" (13.21mm)	1.11" (28.19mm)	-0.59" (-14.98mm)	111th Wettest	Wettest since: 1954	2015
	Ties: 1943
Nov–Dec 1956 2-Month	2.55" (64.77mm)	2.87" (72.90mm)	-0.32" (-8.13mm)	56th Driest	Driest since: 1955	1976
Nov–Dec 1956 2-Month	2.55" (64.77mm)	2.87" (72.90mm)	-0.32" (-8.13mm)	72nd Wettest	Wettest since: 1953	2015
Oct–Dec 1956 3-Month	3.95" (100.33mm)	5.16" (131.06mm)	-1.21" (-30.73mm)	38th Driest	Driest since: 1955	1910
Oct–Dec 1956 3-Month	3.95" (100.33mm)	5.16" (131.06mm)	-1.21" (-30.73mm)	90th Wettest	Wettest since: 1954	1931
Sep–Dec 1956 4-Month	5.49" (139.45mm)	8.83" (224.28mm)	-3.34" (-84.83mm)	15th Driest	Driest since: 1955	1939, 1976
Sep–Dec 1956 4-Month	5.49" (139.45mm)	8.83" (224.28mm)	-3.34" (-84.83mm)	113th Wettest	Wettest since: 1954	1931
Aug–Dec 1956 5-Month	9.98" (253.49mm)	12.67" (321.82mm)	-2.69" (-68.33mm)	24th Driest	Driest since: 1955	1976
Aug–Dec 1956 5-Month	9.98" (253.49mm)	12.67" (321.82mm)	-2.69" (-68.33mm)	104th Wettest	Wettest since: 1954	2018
Jul–Dec 1956 6-Month	14.50" (368.30mm)	16.52" (419.61mm)	-2.02" (-51.31mm)	40th Driest	Driest since: 1955	1976
Jul–Dec 1956 6-Month	14.50" (368.30mm)	16.52" (419.61mm)	-2.02" (-51.31mm)	88th Wettest	Wettest since: 1954	2018
Jun–Dec 1956 7-Month	17.10" (434.34mm)	21.15" (537.21mm)	-4.05" (-102.87mm)	20th Driest	Driest since: 1955	1976
Jun–Dec 1956 7-Month	17.10" (434.34mm)	21.15" (537.21mm)	-4.05" (-102.87mm)	108th Wettest	Wettest since: 1954	2018
May–Dec 1956 8-Month	20.38" (517.65mm)	25.20" (640.08mm)	-4.82" (-122.43mm)	17th Driest	Driest since: 1955	1976
May–Dec 1956 8-Month	20.38" (517.65mm)	25.20" (640.08mm)	-4.82" (-122.43mm)	111th Wettest	Wettest since: 1954	1993
Apr–Dec 1956 9-Month	22.36" (567.94mm)	28.15" (715.01mm)	-5.79" (-147.07mm)	15th Driest	Driest since: 1955	1910
Apr–Dec 1956 9-Month	22.36" (567.94mm)	28.15" (715.01mm)	-5.79" (-147.07mm)	113th Wettest	Wettest since: 1954	1993
Mar–Dec 1956 10-Month	23.29" (591.57mm)	30.10" (764.54mm)	-6.81" (-172.97mm)	10th Driest	Driest since: 1955	1910
Mar–Dec 1956 10-Month	23.29" (591.57mm)	30.10" (764.54mm)	-6.81" (-172.97mm)	118th Wettest	Wettest since: 1954	1993
Feb–Dec 1956 11-Month	23.83" (605.28mm)	31.12" (790.45mm)	-7.29" (-185.17mm)	9th Driest	Driest since: 1955	1910
Feb–Dec 1956 11-Month	23.83" (605.28mm)	31.12" (790.45mm)	-7.29" (-185.17mm)	119th Wettest	Wettest since: 1954	1993
Jan–Dec 1956 12-Month	24.28" (616.71mm)	32.09" (815.09mm)	-7.81" (-198.38mm)	5th Driest	Driest since: 1955	1910
Jan–Dec 1956 12-Month	24.28" (616.71mm)	32.09" (815.09mm)	-7.81" (-198.38mm)	123rd Wettest	Wettest since: 1954	1993
Jul 1955–Dec 1956 18-Month	34.88" (885.95mm)	48.69" (1,236.73mm)	-13.81" (-350.78mm)	1st Driest	Driest since: 1956	1956
Jul 1955–Dec 1956 18-Month	34.88" (885.95mm)	48.69" (1,236.73mm)	-13.81" (-350.78mm)	126th Wettest	Wettest since: 1955	1993
Jan 1955–Dec 1956 24-Month	47.25" (1,200.15mm)	64.24" (1,631.70mm)	-16.99" (-431.55mm)	2nd Driest	Driest since: 1956	1989
Jan 1955–Dec 1956 24-Month	47.25" (1,200.15mm)	64.24" (1,631.70mm)	-16.99" (-431.55mm)	125th Wettest	Wettest since: 1955	2019
Jan 1954–Dec 1956 36-Month	81.43" (2,068.32mm)	96.36" (2,447.54mm)	-14.93" (-379.22mm)	5th Driest	Driest since: 1912	1957
Jan 1954–Dec 1956 36-Month	81.43" (2,068.32mm)	96.36" (2,447.54mm)	-14.93" (-379.22mm)	121st Wettest	Wettest since: 1955	2010
Jan 1953–Dec 1956 48-Month	107.22" (2,723.39mm)	128.37" (3,260.60mm)	-21.15" (-537.21mm)	2nd Driest	Driest since: 1956	1958
Jan 1953–Dec 1956 48-Month	107.22" (2,723.39mm)	128.37" (3,260.60mm)	-21.15" (-537.21mm)	123rd Wettest	Wettest since: 1955	2010
Jan 1952–Dec 1956 60-Month	136.73" (3,472.94mm)	160.36" (4,073.14mm)	-23.63" (-600.20mm)	1st Driest	Driest since: 1956	1956
Jan 1952–Dec 1956 60-Month	136.73" (3,472.94mm)	160.36" (4,073.14mm)	-23.63" (-600.20mm)	123rd Wettest	Wettest since: 1955	2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published November 2022, retrieved on December 1, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings