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 1897

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
December 1897
1-Month 		1.32"
(33.53mm)		 1.25"
(31.75mm)		 0.07"
(1.78mm)		 70th Driest
Driest since:
 1943
59th Wettest
Wettest since:
 2015
Ties: 1941, 1946, 1978
Nov–Dec 1897
2-Month 		2.51"
(63.75mm)		 3.10"
(78.74mm)		 -0.59"
(-14.99mm)		 37th Driest
Driest to Date
 1976
92nd Wettest
Wettest since:
 2015
Ties: 1969
Oct–Dec 1897
3-Month 		4.19"
(106.43mm)		 5.38"
(136.65mm)		 -1.19"
(-30.22mm)		 21st Driest
Driest since:
 1976
108th Wettest
Wettest since:
 1982
Ties: 1938, 1960
Sep–Dec 1897
4-Month 		6.01"
(152.65mm)		 8.74"
(222.00mm)		 -2.73"
(-69.35mm)		 10th Driest
Driest to Date
 1976
119th Wettest
Wettest since:
 2019
Aug–Dec 1897
5-Month 		8.27"
(210.06mm)		 12.27"
(311.66mm)		 -4.00"
(-101.60mm)		 2nd Driest
Driest to Date
 1976
127th Wettest
Wettest since:
 2019
Jul–Dec 1897
6-Month 		13.08"
(332.23mm)		 15.84"
(402.34mm)		 -2.76"
(-70.11mm)		 16th Driest
Driest since:
 1976
113th Wettest
Wettest since:
 1900
Jun–Dec 1897
7-Month 		17.48"
(443.99mm)		 19.89"
(505.21mm)		 -2.41"
(-61.22mm)		 20th Driest
Driest since:
 1976
109th Wettest
Wettest since:
 2010
May–Dec 1897
8-Month 		19.47"
(494.54mm)		 23.31"
(592.07mm)		 -3.84"
(-97.53mm)		 11th Driest
Driest to Date
 1976
118th Wettest
Wettest since:
 2019
Apr–Dec 1897
9-Month 		22.28"
(565.91mm)		 25.81"
(655.57mm)		 -3.53"
(-89.66mm)		 18th Driest
Driest since:
 1976
111th Wettest
Wettest since:
 2019
Mar–Dec 1897
10-Month 		24.64"
(625.86mm)		 27.52"
(699.01mm)		 -2.88"
(-73.15mm)		 24th Driest
Driest since:
 1910
105th Wettest
Wettest since:
 2019
Feb–Dec 1897
11-Month 		25.91"
(658.11mm)		 28.54"
(724.92mm)		 -2.63"
(-66.81mm)		 26th Driest
Driest since:
 1910
103rd Wettest
Wettest since:
 2019
Jan–Dec 1897
12-Month 		28.26"
(717.80mm)		 29.68"
(753.87mm)		 -1.42"
(-36.07mm)		 33rd Driest
Driest since:
 1910
96th Wettest
Wettest since:
 2019
Jul 1896–Dec 1897
18-Month 		44.84"
(1,138.94mm)		 45.59"
(1,157.99mm)		 -0.75"
(-19.05mm)		 45th Driest
Driest to Date
 1976
83rd Wettest
Wettest since:
 2019
Jan 1896–Dec 1897
24-Month 		61.06"
(1,550.92mm)		 59.39"
(1,508.51mm)		 1.67"
(42.41mm)		 70th Driest
Driest since:
 1989
58th Wettest
Wettest to Date
 2019
Jan 1895–Dec 1897
36-Month 		85.14"
(2,162.56mm)		 89.07"
(2,262.38mm)		 -3.93"
(-99.82mm)		 28th Driest
Driest to Date
 1989
99th Wettest
Wettest to Date
 2019

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