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, April 1978

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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
April 1978 1-Month	4.80" (121.92mm)	3.34" (84.84mm)	1.46" (37.08mm)	108th Driest	Driest since: 1977	2018
April 1978 1-Month	4.80" (121.92mm)	3.34" (84.84mm)	1.46" (37.08mm)	21st Wettest	Wettest since: 1976	1973
Mar–Apr 1978 2-Month	5.98" (151.89mm)	5.70" (144.78mm)	0.28" (7.11mm)	74th Driest	Driest since: 1975	1915
Mar–Apr 1978 2-Month	5.98" (151.89mm)	5.70" (144.78mm)	0.28" (7.11mm)	55th Wettest	Wettest since: 1977	1973
Feb–Apr 1978 3-Month	6.92" (175.77mm)	6.92" (175.77mm)	0.00" (0.00mm)	59th Driest	Driest since: 1977	1958
	6.92" (175.77mm)	6.92" (175.77mm)	0.00" (0.00mm)	70th Wettest	Wettest since: 1977	1973
	Ties: 1977, 2012
Jan–Apr 1978 4-Month	7.55" (191.77mm)	8.25" (209.55mm)	-0.70" (-17.78mm)	49th Driest	Driest since: 1971	1956
Jan–Apr 1978 4-Month	7.55" (191.77mm)	8.25" (209.55mm)	-0.70" (-17.78mm)	80th Wettest	Wettest since: 1977	1973
Dec 1977–Apr 1978 5-Month	8.80" (223.52mm)	9.74" (247.40mm)	-0.94" (-23.88mm)	44th Driest	Driest since: 1977	1956
Dec 1977–Apr 1978 5-Month	8.80" (223.52mm)	9.74" (247.40mm)	-0.94" (-23.88mm)	84th Wettest	Wettest since: 1976	1973
Nov 1977–Apr 1978 6-Month	10.98" (278.89mm)	11.86" (301.24mm)	-0.88" (-22.35mm)	48th Driest	Driest since: 1977	1956
Nov 1977–Apr 1978 6-Month	10.98" (278.89mm)	11.86" (301.24mm)	-0.88" (-22.35mm)	80th Wettest	Wettest since: 1976	1973
Oct 1977–Apr 1978 7-Month	15.62" (396.75mm)	14.49" (368.05mm)	1.13" (28.70mm)	76th Driest	Driest since: 1977	1956
Oct 1977–Apr 1978 7-Month	15.62" (396.75mm)	14.49" (368.05mm)	1.13" (28.70mm)	52nd Wettest	Wettest since: 1976	1929
Sep 1977–Apr 1978 8-Month	20.72" (526.29mm)	18.41" (467.61mm)	2.31" (58.68mm)	92nd Driest	Driest since: 1977	1956
	20.72" (526.29mm)	18.41" (467.61mm)	2.31" (58.68mm)	36th Wettest	Wettest since: 1974	1927
	Ties: 2016
Aug 1977–Apr 1978 9-Month	29.38" (746.25mm)	22.15" (562.61mm)	7.23" (183.64mm)	117th Driest	Driest since: 1977	1956
Aug 1977–Apr 1978 9-Month	29.38" (746.25mm)	22.15" (562.61mm)	7.23" (183.64mm)	11th Wettest	Wettest since: 1973	2019
Jul 1977–Apr 1978 10-Month	32.41" (823.21mm)	26.13" (663.70mm)	6.28" (159.51mm)	107th Driest	Driest since: 1977	1902
Jul 1977–Apr 1978 10-Month	32.41" (823.21mm)	26.13" (663.70mm)	6.28" (159.51mm)	21st Wettest	Wettest since: 1974	1993
Jun 1977–Apr 1978 11-Month	34.76" (882.90mm)	30.68" (779.27mm)	4.08" (103.63mm)	96th Driest	Driest since: 1977	1902
Jun 1977–Apr 1978 11-Month	34.76" (882.90mm)	30.68" (779.27mm)	4.08" (103.63mm)	32nd Wettest	Wettest since: 1974	1903
May 1977–Apr 1978 12-Month	37.58" (954.53mm)	34.74" (882.40mm)	2.84" (72.13mm)	83rd Driest	Driest since: 1977	1902
May 1977–Apr 1978 12-Month	37.58" (954.53mm)	34.74" (882.40mm)	2.84" (72.13mm)	45th Wettest	Wettest since: 1975	2011
Nov 1976–Apr 1978 18-Month	45.71" (1,161.03mm)	46.62" (1,184.15mm)	-0.91" (-23.12mm)	52nd Driest	Driest since: 1977	1902
Nov 1976–Apr 1978 18-Month	45.71" (1,161.03mm)	46.62" (1,184.15mm)	-0.91" (-23.12mm)	75th Wettest	Wettest since: 1975	2011
May 1976–Apr 1978 24-Month	63.66" (1,616.96mm)	69.50" (1,765.30mm)	-5.84" (-148.34mm)	31st Driest	Driest since: 1977	1957
May 1976–Apr 1978 24-Month	63.66" (1,616.96mm)	69.50" (1,765.30mm)	-5.84" (-148.34mm)	96th Wettest	Wettest since: 1976	2011
May 1975–Apr 1978 36-Month	96.45" (2,449.83mm)	104.16" (2,645.66mm)	-7.71" (-195.83mm)	27th Driest	Driest since: 1965	1958
May 1975–Apr 1978 36-Month	96.45" (2,449.83mm)	104.16" (2,645.66mm)	-7.71" (-195.83mm)	99th Wettest	Wettest since: 1977	2011
May 1974–Apr 1978 48-Month	134.67" (3,420.62mm)	138.69" (3,522.73mm)	-4.02" (-102.11mm)	46th Driest	Driest since: 1970	1957
May 1974–Apr 1978 48-Month	134.67" (3,420.62mm)	138.69" (3,522.73mm)	-4.02" (-102.11mm)	79th Wettest	Wettest since: 1977	2011
May 1973–Apr 1978 60-Month	180.15" (4,575.81mm)	173.27" (4,401.06mm)	6.88" (174.75mm)	76th Driest	Driest since: 1972	1958
May 1973–Apr 1978 60-Month	180.15" (4,575.81mm)	173.27" (4,401.06mm)	6.88" (174.75mm)	48th Wettest	Wettest since: 1977	2012

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings