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, October 1951

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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
October 1951 1-Month	3.27" (83.06mm)	2.29" (58.17mm)	0.98" (24.89mm)	98th Driest	Driest since: 1950	1952
October 1951 1-Month	3.27" (83.06mm)	2.29" (58.17mm)	0.98" (24.89mm)	31st Wettest	Wettest since: 1947	2009
Sep–Oct 1951 2-Month	5.74" (145.80mm)	5.96" (151.38mm)	-0.22" (-5.58mm)	63rd Driest	Driest since: 1950	1952
Sep–Oct 1951 2-Month	5.74" (145.80mm)	5.96" (151.38mm)	-0.22" (-5.58mm)	66th Wettest	Wettest since: 1947	1941
Aug–Oct 1951 3-Month	11.91" (302.51mm)	9.80" (248.92mm)	2.11" (53.59mm)	98th Driest	Driest since: 1950	1953
Aug–Oct 1951 3-Month	11.91" (302.51mm)	9.80" (248.92mm)	2.11" (53.59mm)	31st Wettest	Wettest since: 1946	2018
Jul–Oct 1951 4-Month	16.44" (417.58mm)	13.66" (346.96mm)	2.78" (70.62mm)	102nd Driest	Driest since: 1950	1953, 1976
Jul–Oct 1951 4-Month	16.44" (417.58mm)	13.66" (346.96mm)	2.78" (70.62mm)	27th Wettest	Wettest since: 1941	1993
Jun–Oct 1951 5-Month	22.63" (574.80mm)	18.29" (464.57mm)	4.34" (110.23mm)	112th Driest	Driest since: 1950	1976
Jun–Oct 1951 5-Month	22.63" (574.80mm)	18.29" (464.57mm)	4.34" (110.23mm)	17th Wettest	Wettest since: 1941	1993
May–Oct 1951 6-Month	27.61" (701.29mm)	22.33" (567.18mm)	5.28" (134.11mm)	113th Driest	Driest since: 1950	1976
May–Oct 1951 6-Month	27.61" (701.29mm)	22.33" (567.18mm)	5.28" (134.11mm)	16th Wettest	Wettest since: 1915	1993
Apr–Oct 1951 7-Month	32.50" (825.50mm)	25.28" (642.11mm)	7.22" (183.39mm)	119th Driest	Driest since: 1950	1988
Apr–Oct 1951 7-Month	32.50" (825.50mm)	25.28" (642.11mm)	7.22" (183.39mm)	10th Wettest	Wettest since: 1902	1993
Mar–Oct 1951 8-Month	36.68" (931.67mm)	27.23" (691.64mm)	9.45" (240.03mm)	122nd Driest	Driest since: 1950	1988
Mar–Oct 1951 8-Month	36.68" (931.67mm)	27.23" (691.64mm)	9.45" (240.03mm)	7th Wettest	Wettest since: 1902	1993
Feb–Oct 1951 9-Month	39.10" (993.14mm)	28.25" (717.55mm)	10.85" (275.59mm)	125th Driest	Driest since: 1950	1988
Feb–Oct 1951 9-Month	39.10" (993.14mm)	28.25" (717.55mm)	10.85" (275.59mm)	4th Wettest	Wettest to Date	1993
Jan–Oct 1951 10-Month	39.71" (1,008.63mm)	29.23" (742.44mm)	10.48" (266.19mm)	124th Driest	Driest since: 1950	1988
Jan–Oct 1951 10-Month	39.71" (1,008.63mm)	29.23" (742.44mm)	10.48" (266.19mm)	5th Wettest	Wettest to Date	1993
Dec 1950–Oct 1951 11-Month	40.46" (1,027.68mm)	30.33" (770.38mm)	10.13" (257.30mm)	120th Driest	Driest since: 1950	1988
Dec 1950–Oct 1951 11-Month	40.46" (1,027.68mm)	30.33" (770.38mm)	10.13" (257.30mm)	8th Wettest	Wettest since: 1902	1993
Nov 1950–Oct 1951 12-Month	41.03" (1,042.16mm)	32.07" (814.58mm)	8.96" (227.58mm)	117th Driest	Driest since: 1950	1956
Nov 1950–Oct 1951 12-Month	41.03" (1,042.16mm)	32.07" (814.58mm)	8.96" (227.58mm)	11th Wettest	Wettest since: 1902	1993
May 1950–Oct 1951 18-Month	61.90" (1,572.26mm)	54.47" (1,383.54mm)	7.43" (188.72mm)	108th Driest	Driest since: 1950	1956
May 1950–Oct 1951 18-Month	61.90" (1,572.26mm)	54.47" (1,383.54mm)	7.43" (188.72mm)	20th Wettest	Wettest since: 1915	2019
Nov 1949–Oct 1951 24-Month	70.32" (1,786.13mm)	64.23" (1,631.44mm)	6.09" (154.69mm)	99th Driest	Driest since: 1950	1956
Nov 1949–Oct 1951 24-Month	70.32" (1,786.13mm)	64.23" (1,631.44mm)	6.09" (154.69mm)	28th Wettest	Wettest since: 1903	1993
Nov 1948–Oct 1951 36-Month	101.29" (2,572.77mm)	96.34" (2,447.04mm)	4.95" (125.73mm)	87th Driest	Driest since: 1950	1957
Nov 1948–Oct 1951 36-Month	101.29" (2,572.77mm)	96.34" (2,447.04mm)	4.95" (125.73mm)	39th Wettest	Wettest since: 1947	2010
Nov 1947–Oct 1951 48-Month	128.74" (3,270.00mm)	128.36" (3,260.34mm)	0.38" (9.66mm)	60th Driest	Driest since: 1950	1958
Nov 1947–Oct 1951 48-Month	128.74" (3,270.00mm)	128.36" (3,260.34mm)	0.38" (9.66mm)	65th Wettest	Wettest since: 1948	2010
Nov 1946–Oct 1951 60-Month	162.20" (4,119.88mm)	160.34" (4,072.64mm)	1.86" (47.24mm)	67th Driest	Driest since: 1950	1956
Nov 1946–Oct 1951 60-Month	162.20" (4,119.88mm)	160.34" (4,072.64mm)	1.86" (47.24mm)	57th Wettest	Wettest since: 1948	2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings