Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Upper Midwest Climate Region

Precipitation Rankings, December 1931

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
December 1931
1-Month		1.39"
(35.31mm)		1.25"
(31.75mm)		0.14"
(3.56mm)		76th Driest
Driest since:
1943
53rd Wettest
Wettest since:
2015
Ties: 1924
Nov–Dec 1931
2-Month		5.46"
(138.68mm)		3.10"
(78.74mm)		2.36"
(59.94mm)		125th Driest
Driest since:
1976
4th Wettest
Wettest since:
2015
Oct–Dec 1931
3-Month		8.29"
(210.57mm)		5.38"
(136.65mm)		2.91"
(73.92mm)		122nd Driest
Driest since:
1976
7th Wettest
Wettest to Date
1982
Sep–Dec 1931
4-Month		13.07"
(331.98mm)		8.74"
(222.00mm)		4.33"
(109.98mm)		125th Driest
Driest since:
1976
4th Wettest
Wettest to Date
2019
Aug–Dec 1931
5-Month		15.74"
(399.80mm)		12.27"
(311.66mm)		3.47"
(88.14mm)		114th Driest
Driest since:
1976
15th Wettest
Wettest since:
2019
Jul–Dec 1931
6-Month		17.97"
(456.44mm)		15.84"
(402.34mm)		2.13"
(54.10mm)		96th Driest
Driest since:
1976
33rd Wettest
Wettest since:
1900
Jun–Dec 1931
7-Month		22.00"
(558.80mm)		19.89"
(505.21mm)		2.11"
(53.59mm)		95th Driest
Driest since:
1976
34th Wettest
Wettest since:
2010
May–Dec 1931
8-Month		24.52"
(622.81mm)		23.31"
(592.07mm)		1.21"
(30.74mm)		82nd Driest
Driest since:
1976
47th Wettest
Wettest since:
2019
Apr–Dec 1931
9-Month		25.90"
(657.86mm)		25.81"
(655.57mm)		0.09"
(2.29mm)		60th Driest
Driest since:
1976
69th Wettest
Wettest since:
2019
Ties: 1961
Mar–Dec 1931
10-Month		27.45"
(697.23mm)		27.52"
(699.01mm)		-0.07"
(-1.78mm)		57th Driest
Driest since:
1910
72nd Wettest
Wettest since:
2019
Feb–Dec 1931
11-Month		27.96"
(710.18mm)		28.54"
(724.92mm)		-0.58"
(-14.74mm)		51st Driest
Driest since:
1910
78th Wettest
Wettest since:
2019
Jan–Dec 1931
12-Month		28.56"
(725.42mm)		29.68"
(753.87mm)		-1.12"
(-28.45mm)		39th Driest
Driest since:
1910
90th Wettest
Wettest since:
2019
Jul 1930–Dec 1931
18-Month		39.08"
(992.63mm)		45.59"
(1,157.99mm)		-6.51"
(-165.36mm)		7th Driest
Driest since:
1976
121st Wettest
Wettest since:
2019
Jan 1930–Dec 1931
24-Month		52.60"
(1,336.04mm)		59.39"
(1,508.51mm)		-6.79"
(-172.47mm)		10th Driest
Driest since:
1989
118th Wettest
Wettest since:
2019
Jan 1929–Dec 1931
36-Month		79.23"
(2,012.44mm)		89.07"
(2,262.38mm)		-9.84"
(-249.94mm)		5th Driest
Driest since:
1989
122nd Wettest
Wettest since:
2019
Jan 1928–Dec 1931
48-Month		110.60"
(2,809.24mm)		118.71"
(3,015.23mm)		-8.11"
(-205.99mm)		12th Driest
Driest since:
1936
114th Wettest
Wettest since:
2019
Jan 1927–Dec 1931
60-Month		139.23"
(3,536.44mm)		148.36"
(3,768.34mm)		-9.13"
(-231.90mm)		14th Driest
Driest since:
1936
111th Wettest
Wettest since:
2019

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