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, January 1979

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
January 1979 1-Month	1.66" (42.16mm)	0.98" (24.89mm)	0.68" (17.27mm)	114th Driest	Driest since: 1978	1981
	1.66" (42.16mm)	0.98" (24.89mm)	0.68" (17.27mm)	16th Wettest	Wettest since: 1973	1949
	Ties: 1936
Dec 1978–Jan 1979 2-Month	2.68" (68.07mm)	2.08" (52.83mm)	0.60" (15.24mm)	99th Driest	Driest since: 1978	2003
Dec 1978–Jan 1979 2-Month	2.68" (68.07mm)	2.08" (52.83mm)	0.60" (15.24mm)	30th Wettest	Wettest since: 1974	2016
Nov 1978–Jan 1979 3-Month	5.09" (129.29mm)	3.82" (97.03mm)	1.27" (32.26mm)	107th Driest	Driest since: 1978	2003
	5.09" (129.29mm)	3.82" (97.03mm)	1.27" (32.26mm)	22nd Wettest	Wettest since: 1974	1932
	Ties: 1962
Oct 1978–Jan 1979 4-Month	6.40" (162.56mm)	6.13" (155.70mm)	0.27" (6.86mm)	73rd Driest	Driest since: 1977	1911
Oct 1978–Jan 1979 4-Month	6.40" (162.56mm)	6.13" (155.70mm)	0.27" (6.86mm)	56th Wettest	Wettest since: 1978	1932
Sep 1978–Jan 1979 5-Month	11.91" (302.51mm)	9.83" (249.68mm)	2.08" (52.83mm)	96th Driest	Driest since: 1977	1977
Sep 1978–Jan 1979 5-Month	11.91" (302.51mm)	9.83" (249.68mm)	2.08" (52.83mm)	33rd Wettest	Wettest since: 1978	1932
Aug 1978–Jan 1979 6-Month	15.20" (386.08mm)	13.69" (347.73mm)	1.51" (38.35mm)	85th Driest	Driest since: 1977	1977
	15.20" (386.08mm)	13.69" (347.73mm)	1.51" (38.35mm)	44th Wettest	Wettest since: 1978	2019
	Ties: 1916
Jul 1978–Jan 1979 7-Month	21.07" (535.18mm)	17.57" (446.28mm)	3.50" (88.90mm)	101st Driest	Driest since: 1977	1977
Jul 1978–Jan 1979 7-Month	21.07" (535.18mm)	17.57" (446.28mm)	3.50" (88.90mm)	28th Wettest	Wettest since: 1978	2019
Jun 1978–Jan 1979 8-Month	25.32" (643.13mm)	22.18" (563.37mm)	3.14" (79.76mm)	97th Driest	Driest since: 1977	1977
Jun 1978–Jan 1979 8-Month	25.32" (643.13mm)	22.18" (563.37mm)	3.14" (79.76mm)	32nd Wettest	Wettest since: 1978	2019
May 1978–Jan 1979 9-Month	29.08" (738.63mm)	26.22" (665.99mm)	2.86" (72.64mm)	92nd Driest	Driest since: 1977	1977
May 1978–Jan 1979 9-Month	29.08" (738.63mm)	26.22" (665.99mm)	2.86" (72.64mm)	37th Wettest	Wettest since: 1978	1994
Apr 1978–Jan 1979 10-Month	33.72" (856.49mm)	29.17" (740.92mm)	4.55" (115.57mm)	101st Driest	Driest since: 1978	1911
Apr 1978–Jan 1979 10-Month	33.72" (856.49mm)	29.17" (740.92mm)	4.55" (115.57mm)	28th Wettest	Wettest since: 1974	1994
Mar 1978–Jan 1979 11-Month	34.43" (874.52mm)	31.14" (790.96mm)	3.29" (83.56mm)	91st Driest	Driest since: 1977	1911
Mar 1978–Jan 1979 11-Month	34.43" (874.52mm)	31.14" (790.96mm)	3.29" (83.56mm)	38th Wettest	Wettest since: 1978	1994
Feb 1978–Jan 1979 12-Month	35.21" (894.33mm)	32.15" (816.61mm)	3.06" (77.72mm)	88th Driest	Driest since: 1977	1911
Feb 1978–Jan 1979 12-Month	35.21" (894.33mm)	32.15" (816.61mm)	3.06" (77.72mm)	41st Wettest	Wettest since: 1978	1994
Aug 1977–Jan 1979 18-Month	55.52" (1,410.21mm)	45.86" (1,164.84mm)	9.66" (245.37mm)	115th Driest	Driest since: 1978	1957
Aug 1977–Jan 1979 18-Month	55.52" (1,410.21mm)	45.86" (1,164.84mm)	9.66" (245.37mm)	13th Wettest	Wettest since: 1974	2020
Feb 1977–Jan 1979 24-Month	71.89" (1,826.01mm)	64.28" (1,632.71mm)	7.61" (193.30mm)	103rd Driest	Driest since: 1978	1990
Feb 1977–Jan 1979 24-Month	71.89" (1,826.01mm)	64.28" (1,632.71mm)	7.61" (193.30mm)	25th Wettest	Wettest since: 1975	2020
Feb 1976–Jan 1979 36-Month	95.76" (2,432.30mm)	96.29" (2,445.77mm)	-0.53" (-13.47mm)	58th Driest	Driest since: 1978	1958
Feb 1976–Jan 1979 36-Month	95.76" (2,432.30mm)	96.29" (2,445.77mm)	-0.53" (-13.47mm)	69th Wettest	Wettest since: 1976	2011
Feb 1975–Jan 1979 48-Month	124.53" (3,163.06mm)	128.27" (3,258.06mm)	-3.74" (-95.00mm)	39th Driest	Driest since: 1978	1959
Feb 1975–Jan 1979 48-Month	124.53" (3,163.06mm)	128.27" (3,258.06mm)	-3.74" (-95.00mm)	87th Wettest	Wettest since: 1977	2011
Feb 1974–Jan 1979 60-Month	156.83" (3,983.48mm)	160.30" (4,071.62mm)	-3.47" (-88.14mm)	39th Driest	Driest since: 1971	1957
Feb 1974–Jan 1979 60-Month	156.83" (3,983.48mm)	160.30" (4,071.62mm)	-3.47" (-88.14mm)	86th Wettest	Wettest since: 1978	2011

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