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 1920

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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 1920 1-Month	5.01" (127.25mm)	3.34" (84.84mm)	1.67" (42.41mm)	112th Driest	Driest since: 1919	2018
April 1920 1-Month	5.01" (127.25mm)	3.34" (84.84mm)	1.67" (42.41mm)	17th Wettest	Wettest to Date	1973
Mar–Apr 1920 2-Month	9.64" (244.86mm)	5.70" (144.78mm)	3.94" (100.08mm)	125th Driest	Driest since: 1919	1915
Mar–Apr 1920 2-Month	9.64" (244.86mm)	5.70" (144.78mm)	3.94" (100.08mm)	4th Wettest	Wettest to Date	1973
Feb–Apr 1920 3-Month	9.98" (253.49mm)	6.92" (175.77mm)	3.06" (77.72mm)	117th Driest	Driest since: 1919	1958
Feb–Apr 1920 3-Month	9.98" (253.49mm)	6.92" (175.77mm)	3.06" (77.72mm)	12th Wettest	Wettest to Date	1973
Jan–Apr 1920 4-Month	10.43" (264.92mm)	8.25" (209.55mm)	2.18" (55.37mm)	103rd Driest	Driest since: 1919	1956
Jan–Apr 1920 4-Month	10.43" (264.92mm)	8.25" (209.55mm)	2.18" (55.37mm)	26th Wettest	Wettest since: 1916	1973
Dec 1919–Apr 1920 5-Month	10.86" (275.84mm)	9.74" (247.40mm)	1.12" (28.44mm)	79th Driest	Driest since: 1918	1956
Dec 1919–Apr 1920 5-Month	10.86" (275.84mm)	9.74" (247.40mm)	1.12" (28.44mm)	49th Wettest	Wettest since: 1919	1973
Nov 1919–Apr 1920 6-Month	14.46" (367.28mm)	11.86" (301.24mm)	2.60" (66.04mm)	101st Driest	Driest since: 1919	1956
Nov 1919–Apr 1920 6-Month	14.46" (367.28mm)	11.86" (301.24mm)	2.60" (66.04mm)	27th Wettest	Wettest to Date	1973
Oct 1919–Apr 1920 7-Month	17.70" (449.58mm)	14.49" (368.05mm)	3.21" (81.53mm)	108th Driest	Driest since: 1919	1956
Oct 1919–Apr 1920 7-Month	17.70" (449.58mm)	14.49" (368.05mm)	3.21" (81.53mm)	20th Wettest	Wettest to Date	1929
Sep 1919–Apr 1920 8-Month	23.54" (597.92mm)	18.41" (467.61mm)	5.13" (130.31mm)	112th Driest	Driest since: 1919	1956
Sep 1919–Apr 1920 8-Month	23.54" (597.92mm)	18.41" (467.61mm)	5.13" (130.31mm)	16th Wettest	Wettest to Date	1927
Aug 1919–Apr 1920 9-Month	26.54" (674.12mm)	22.15" (562.61mm)	4.39" (111.51mm)	103rd Driest	Driest since: 1919	1956
Aug 1919–Apr 1920 9-Month	26.54" (674.12mm)	22.15" (562.61mm)	4.39" (111.51mm)	25th Wettest	Wettest since: 1903	2019
Jul 1919–Apr 1920 10-Month	29.29" (743.97mm)	26.13" (663.70mm)	3.16" (80.27mm)	95th Driest	Driest since: 1919	1902
Jul 1919–Apr 1920 10-Month	29.29" (743.97mm)	26.13" (663.70mm)	3.16" (80.27mm)	33rd Wettest	Wettest since: 1916	1993
Jun 1919–Apr 1920 11-Month	33.01" (838.45mm)	30.68" (779.27mm)	2.33" (59.18mm)	85th Driest	Driest since: 1919	1902
Jun 1919–Apr 1920 11-Month	33.01" (838.45mm)	30.68" (779.27mm)	2.33" (59.18mm)	43rd Wettest	Wettest since: 1916	1903
May 1919–Apr 1920 12-Month	37.61" (955.29mm)	34.74" (882.40mm)	2.87" (72.89mm)	84th Driest	Driest since: 1918	1902
May 1919–Apr 1920 12-Month	37.61" (955.29mm)	34.74" (882.40mm)	2.87" (72.89mm)	44th Wettest	Wettest since: 1919	2011
Nov 1918–Apr 1920 18-Month	51.31" (1,303.27mm)	46.62" (1,184.15mm)	4.69" (119.12mm)	96th Driest	Driest since: 1919	1902
	51.31" (1,303.27mm)	46.62" (1,184.15mm)	4.69" (119.12mm)	31st Wettest	Wettest since: 1916	2011
	Ties: 1933
May 1918–Apr 1920 24-Month	76.35" (1,939.29mm)	69.50" (1,765.30mm)	6.85" (173.99mm)	95th Driest	Driest since: 1919	1957
May 1918–Apr 1920 24-Month	76.35" (1,939.29mm)	69.50" (1,765.30mm)	6.85" (173.99mm)	32nd Wettest	Wettest since: 1917	2011
May 1917–Apr 1920 36-Month	104.24" (2,647.70mm)	104.16" (2,645.66mm)	0.08" (2.04mm)	61st Driest	Driest since: 1919	1958
May 1917–Apr 1920 36-Month	104.24" (2,647.70mm)	104.16" (2,645.66mm)	0.08" (2.04mm)	65th Wettest	Wettest since: 1918	2011
May 1916–Apr 1920 48-Month	138.01" (3,505.45mm)	138.69" (3,522.73mm)	-0.68" (-17.28mm)	61st Driest	Driest since: 1918	1957
May 1916–Apr 1920 48-Month	138.01" (3,505.45mm)	138.69" (3,522.73mm)	-0.68" (-17.28mm)	64th Wettest	Wettest since: 1919	2011
May 1915–Apr 1920 60-Month	183.22" (4,653.79mm)	173.27" (4,401.06mm)	9.95" (252.73mm)	83rd Driest	Driest since: 1919	1958
May 1915–Apr 1920 60-Month	183.22" (4,653.79mm)	173.27" (4,401.06mm)	9.95" (252.73mm)	41st Wettest	Wettest since: 1907	2012

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published January 2023, retrieved on January 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings