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, August 1911

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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
August 1911 1-Month	3.48" (88.39mm)	3.84" (97.54mm)	-0.36" (-9.15mm)	56th Driest	Driest since: 1909	1984
August 1911 1-Month	3.48" (88.39mm)	3.84" (97.54mm)	-0.36" (-9.15mm)	73rd Wettest	Wettest since: 1910	2007
Jul–Aug 1911 2-Month	5.88" (149.35mm)	7.70" (195.58mm)	-1.82" (-46.23mm)	30th Driest	Driest since: 1901	1947
Jul–Aug 1911 2-Month	5.88" (149.35mm)	7.70" (195.58mm)	-1.82" (-46.23mm)	99th Wettest	Wettest since: 1910	1993
Jun–Aug 1911 3-Month	7.79" (197.87mm)	12.33" (313.18mm)	-4.54" (-115.31mm)	6th Driest	Driest since: 1901	1927
Jun–Aug 1911 3-Month	7.79" (197.87mm)	12.33" (313.18mm)	-4.54" (-115.31mm)	123rd Wettest	Wettest since: 1910	1993
May–Aug 1911 4-Month	11.71" (297.43mm)	16.38" (416.05mm)	-4.67" (-118.62mm)	11th Driest	Driest since: 1910	1936
May–Aug 1911 4-Month	11.71" (297.43mm)	16.38" (416.05mm)	-4.67" (-118.62mm)	118th Wettest	Wettest since: 1909	1993
Apr–Aug 1911 5-Month	14.77" (375.16mm)	19.32" (490.73mm)	-4.55" (-115.57mm)	11th Driest	Driest since: 1910	1936
Apr–Aug 1911 5-Month	14.77" (375.16mm)	19.32" (490.73mm)	-4.55" (-115.57mm)	118th Wettest	Wettest since: 1909	1993
Mar–Aug 1911 6-Month	15.64" (397.26mm)	21.28" (540.51mm)	-5.64" (-143.25mm)	8th Driest	Driest since: 1910	1936
Mar–Aug 1911 6-Month	15.64" (397.26mm)	21.28" (540.51mm)	-5.64" (-143.25mm)	121st Wettest	Wettest since: 1909	1993
Feb–Aug 1911 7-Month	18.40" (467.36mm)	22.29" (566.17mm)	-3.89" (-98.81mm)	18th Driest	Driest since: 1910	1988
Feb–Aug 1911 7-Month	18.40" (467.36mm)	22.29" (566.17mm)	-3.89" (-98.81mm)	111th Wettest	Wettest since: 1909	1993
Jan–Aug 1911 8-Month	19.27" (489.46mm)	23.27" (591.06mm)	-4.00" (-101.60mm)	18th Driest	Driest since: 1910	1988
Jan–Aug 1911 8-Month	19.27" (489.46mm)	23.27" (591.06mm)	-4.00" (-101.60mm)	111th Wettest	Wettest since: 1909	1993
Dec 1910–Aug 1911 9-Month	19.64" (498.86mm)	24.37" (619.00mm)	-4.73" (-120.14mm)	13th Driest	Driest since: 1910	1988
	19.64" (498.86mm)	24.37" (619.00mm)	-4.73" (-120.14mm)	115th Wettest	Wettest since: 1909	1993
	Ties: 1925
Nov 1910–Aug 1911 10-Month	19.98" (507.49mm)	26.11" (663.19mm)	-6.13" (-155.70mm)	8th Driest	Driest since: 1901	1934
Nov 1910–Aug 1911 10-Month	19.98" (507.49mm)	26.11" (663.19mm)	-6.13" (-155.70mm)	120th Wettest	Wettest since: 1910	1993
Oct 1910–Aug 1911 11-Month	20.80" (528.32mm)	28.42" (721.87mm)	-7.62" (-193.55mm)	3rd Driest	Driest to Date	1934
Oct 1910–Aug 1911 11-Month	20.80" (528.32mm)	28.42" (721.87mm)	-7.62" (-193.55mm)	125th Wettest	Wettest since: 1910	1993
Sep 1910–Aug 1911 12-Month	24.54" (623.32mm)	32.12" (815.85mm)	-7.58" (-192.53mm)	8th Driest	Driest to Date	1934
Sep 1910–Aug 1911 12-Month	24.54" (623.32mm)	32.12" (815.85mm)	-7.58" (-192.53mm)	120th Wettest	Wettest since: 1910	1993
Mar 1910–Aug 1911 18-Month	37.45" (951.23mm)	53.43" (1,357.12mm)	-15.98" (-405.89mm)	1st Driest	Driest to Date	1911
Mar 1910–Aug 1911 18-Month	37.45" (951.23mm)	53.43" (1,357.12mm)	-15.98" (-405.89mm)	127th Wettest	Wettest since: 1910	1993
Sep 1909–Aug 1911 24-Month	52.69" (1,338.33mm)	64.28" (1,632.71mm)	-11.59" (-294.38mm)	7th Driest	Driest to Date	1934
Sep 1909–Aug 1911 24-Month	52.69" (1,338.33mm)	64.28" (1,632.71mm)	-11.59" (-294.38mm)	120th Wettest	Wettest since: 1910	1993
Sep 1908–Aug 1911 36-Month	85.86" (2,180.84mm)	96.39" (2,448.31mm)	-10.53" (-267.47mm)	14th Driest	Driest to Date	1957
Sep 1908–Aug 1911 36-Month	85.86" (2,180.84mm)	96.39" (2,448.31mm)	-10.53" (-267.47mm)	112th Wettest	Wettest since: 1910	2010
Sep 1907–Aug 1911 48-Month	120.28" (3,055.11mm)	128.37" (3,260.60mm)	-8.09" (-205.49mm)	24th Driest	Driest since: 1901	1936
Sep 1907–Aug 1911 48-Month	120.28" (3,055.11mm)	128.37" (3,260.60mm)	-8.09" (-205.49mm)	101st Wettest	Wettest since: 1910	2010
Sep 1906–Aug 1911 60-Month	155.08" (3,939.03mm)	160.37" (4,073.40mm)	-5.29" (-134.37mm)	35th Driest	Driest since: 1901	1957
Sep 1906–Aug 1911 60-Month	155.08" (3,939.03mm)	160.37" (4,073.40mm)	-5.29" (-134.37mm)	89th Wettest	Wettest since: 1910	2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings