Divisional Rankings

Divisional Data Info
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, January 1978

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2023)		 Wettest/Driest
Since		 Record
January 1978
1-Month 		0.63"
(16.00mm)		 1.32"
(33.53mm)		 -0.69"
(-17.53mm)		 32nd Driest
Driest since:
 1981
98th Wettest
Wettest since:
 1916
Dec 1977–Jan 1978
2-Month 		1.88"
(47.75mm)		 2.82"
(71.63mm)		 -0.94"
(-23.88mm)		 31st Driest
Driest since:
 1956
98th Wettest
Wettest since:
 1907
Ties: 2022
Nov 1977–Jan 1978
3-Month 		4.06"
(103.12mm)		 4.93"
(125.22mm)		 -0.87"
(-22.10mm)		 51st Driest
Driest since:
 1956
78th Wettest
Wettest since:
 1993
Ties: 1930
Oct 1977–Jan 1978
4-Month 		8.70"
(220.98mm)		 7.56"
(192.02mm)		 1.14"
(28.96mm)		 90th Driest
Driest since:
 1951
39th Wettest
Wettest since:
 1932
Sep 1977–Jan 1978
5-Month 		13.80"
(350.52mm)		 11.48"
(291.59mm)		 2.32"
(58.93mm)		 93rd Driest
Driest since:
 1951
36th Wettest
Wettest since:
 1962
Aug 1977–Jan 1978
6-Month 		22.46"
(570.48mm)		 15.23"
(386.84mm)		 7.23"
(183.64mm)		 121st Driest
Driest since:
 1954
8th Wettest
Wettest since:
 1971
Jul 1977–Jan 1978
7-Month 		25.49"
(647.45mm)		 19.21"
(487.93mm)		 6.28"
(159.52mm)		 109th Driest
Driest since:
 1954
20th Wettest
Wettest since:
 1903
Jun 1977–Jan 1978
8-Month 		27.84"
(707.14mm)		 23.76"
(603.50mm)		 4.08"
(103.64mm)		 97th Driest
Driest since:
 1954
32nd Wettest
Wettest since:
 1903
May 1977–Jan 1978
9-Month 		30.66"
(778.76mm)		 27.81"
(706.37mm)		 2.85"
(72.39mm)		 89th Driest
Driest since:
 1954
40th Wettest
Wettest since:
 2011
Apr 1977–Jan 1978
10-Month 		32.59"
(827.79mm)		 31.15"
(791.21mm)		 1.44"
(36.58mm)		 77th Driest
Driest since:
 1954
52nd Wettest
Wettest since:
 2011
Mar 1977–Jan 1978
11-Month 		37.16"
(943.86mm)		 33.52"
(851.41mm)		 3.64"
(92.45mm)		 90th Driest
Driest since:
 1902
39th Wettest
Wettest since:
 2011
Feb 1977–Jan 1978
12-Month 		37.58"
(954.53mm)		 34.76"
(882.90mm)		 2.82"
(71.63mm)		 87th Driest
Driest since:
 1902
42nd Wettest
Wettest since:
 2011
Aug 1976–Jan 1978
18-Month 		45.55"
(1,156.97mm)		 49.98"
(1,269.49mm)		 -4.43"
(-112.52mm)		 40th Driest
Driest since:
 1957
88th Wettest
Wettest since:
 2011
Feb 1976–Jan 1978
24-Month 		67.50"
(1,714.50mm)		 69.50"
(1,765.30mm)		 -2.00"
(-50.80mm)		 53rd Driest
Driest since:
 1957
75th Wettest
Wettest since:
 2011
Feb 1975–Jan 1978
36-Month 		96.24"
(2,444.50mm)		 104.12"
(2,644.65mm)		 -7.88"
(-200.15mm)		 23rd Driest
Driest since:
 1990
104th Wettest
Wettest since:
 2011
Feb 1974–Jan 1978
48-Month 		133.93"
(3,401.82mm)		 138.65"
(3,521.71mm)		 -4.72"
(-119.89mm)		 42nd Driest
Driest since:
 1957
84th Wettest
Wettest since:
 2011
Feb 1973–Jan 1978
60-Month 		186.84"
(4,745.74mm)		 173.26"
(4,400.80mm)		 13.58"
(344.94mm)		 98th Driest
Driest since:
 1957
27th Wettest
Wettest since:
 2012

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