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.

Montana, Climate Division 3. North Central

Precipitation Rankings, January 2021

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2023)		 Wettest/Driest
Since		 Record
January 2021
1-Month 		0.27"
(6.86mm)		 0.79"
(20.07mm)		 -0.52"
(-13.21mm)		 8th Driest
Driest since:
 1944
122nd Wettest
Wettest since:
 1971
Ties: 1940
Dec 2020–Jan 2021
2-Month 		0.63"
(16.00mm)		 1.56"
(39.62mm)		 -0.93"
(-23.62mm)		 8th Driest
Driest since:
 1944
121st Wettest
Wettest since:
 1918
Ties: 1941
Nov 2020–Jan 2021
3-Month 		1.84"
(46.74mm)		 2.29"
(58.17mm)		 -0.45"
(-11.43mm)		 44th Driest
Driest since:
 1944
85th Wettest
Wettest since:
 1907
Oct 2020–Jan 2021
4-Month 		3.33"
(84.58mm)		 3.11"
(78.99mm)		 0.22"
(5.59mm)		 75th Driest
Driest since:
 1908
54th Wettest
Wettest since:
 1907
Sep 2020–Jan 2021
5-Month 		4.55"
(115.57mm)		 4.41"
(112.01mm)		 0.14"
(3.56mm)		 69th Driest
Driest since:
 1988
60th Wettest
Wettest since:
 1912
Aug 2020–Jan 2021
6-Month 		4.90"
(124.46mm)		 5.76"
(146.30mm)		 -0.86"
(-21.84mm)		 35th Driest
Driest since:
 2002
94th Wettest
Wettest since:
 1912
Jul 2020–Jan 2021
7-Month 		5.69"
(144.53mm)		 7.34"
(186.44mm)		 -1.65"
(-41.91mm)		 22nd Driest
Driest since:
 1905
107th Wettest
Wettest since:
 1912
Ties: 1908
Jun 2020–Jan 2021
8-Month 		9.17"
(232.92mm)		 10.29"
(261.37mm)		 -1.12"
(-28.45mm)		 51st Driest
Driest since:
 1905
78th Wettest
Wettest since:
 1912
May 2020–Jan 2021
9-Month 		11.30"
(287.02mm)		 12.45"
(316.23mm)		 -1.15"
(-29.21mm)		 49th Driest
Driest since:
 1905
80th Wettest
Wettest since:
 1928
Apr 2020–Jan 2021
10-Month 		12.12"
(307.85mm)		 13.56"
(344.42mm)		 -1.44"
(-36.57mm)		 43rd Driest
Driest since:
 1905
86th Wettest
Wettest since:
 1928
Mar 2020–Jan 2021
11-Month 		12.91"
(327.91mm)		 14.37"
(365.00mm)		 -1.46"
(-37.09mm)		 42nd Driest
Driest since:
 1905
87th Wettest
Wettest since:
 1928
Ties: 1927, 1944
Feb 2020–Jan 2021
12-Month 		13.53"
(343.66mm)		 14.98"
(380.49mm)		 -1.45"
(-36.83mm)		 41st Driest
Driest since:
 1919
88th Wettest
Wettest since:
 1928
Aug 2019–Jan 2021
18-Month 		21.30"
(541.02mm)		 20.76"
(527.30mm)		 0.54"
(13.72mm)		 79th Driest
Driest since:
 2002
49th Wettest
Wettest since:
 1928
Feb 2019–Jan 2021
24-Month 		30.43"
(772.92mm)		 30.01"
(762.25mm)		 0.42"
(10.67mm)		 68th Driest
Driest since:
 1920
60th Wettest
Wettest since:
 1917
Feb 2018–Jan 2021
36-Month 		44.68"
(1,134.87mm)		 45.06"
(1,144.52mm)		 -0.38"
(-9.65mm)		 57th Driest
Driest since:
 1921
70th Wettest
Wettest since:
 1899
Feb 2017–Jan 2021
48-Month 		57.12"
(1,450.85mm)		 60.16"
(1,528.06mm)		 -3.04"
(-77.21mm)		 35th Driest
Driest since:
 1921
91st Wettest
Wettest since:
 1900
Feb 2016–Jan 2021
60-Month 		77.23"
(1,961.64mm)		 75.31"
(1,912.87mm)		 1.92"
(48.77mm)		 78th Driest
Driest since:
 1922
47th Wettest
Wettest since:
 1900

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