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 1921

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
January 1921
1-Month 		0.41"
(10.41mm)		 0.79"
(20.07mm)		 -0.38"
(-9.66mm)		 22nd Driest
Driest since:
 1944
107th Wettest
Wettest since:
 1971
Ties: 1910
Dec 1920–Jan 1921
2-Month 		0.80"
(20.32mm)		 1.56"
(39.62mm)		 -0.76"
(-19.30mm)		 14th Driest
Driest since:
 1944
114th Wettest
Wettest since:
 1918
Ties: 1919
Nov 1920–Jan 1921
3-Month 		0.95"
(24.13mm)		 2.29"
(58.17mm)		 -1.34"
(-34.04mm)		 3rd Driest
Driest since:
 1944
125th Wettest
Wettest since:
 1907
Oct 1920–Jan 1921
4-Month 		2.02"
(51.31mm)		 3.11"
(78.99mm)		 -1.09"
(-27.68mm)		 15th Driest
Driest since:
 1908
113th Wettest
Wettest since:
 1907
Sep 1920–Jan 1921
5-Month 		2.39"
(60.71mm)		 4.41"
(112.01mm)		 -2.02"
(-51.30mm)		 7th Driest
Driest since:
 1988
121st Wettest
Wettest since:
 1912
Aug 1920–Jan 1921
6-Month 		3.50"
(88.90mm)		 5.76"
(146.30mm)		 -2.26"
(-57.40mm)		 8th Driest
Driest since:
 2002
120th Wettest
Wettest since:
 1912
Jul 1920–Jan 1921
7-Month 		5.17"
(131.32mm)		 7.34"
(186.44mm)		 -2.17"
(-55.12mm)		 11th Driest
Driest since:
 1905
117th Wettest
Wettest since:
 1912
Ties: 2008
Jun 1920–Jan 1921
8-Month 		7.65"
(194.31mm)		 10.29"
(261.37mm)		 -2.64"
(-67.06mm)		 15th Driest
Driest since:
 1905
113th Wettest
Wettest since:
 1912
May 1920–Jan 1921
9-Month 		9.21"
(233.93mm)		 12.45"
(316.23mm)		 -3.24"
(-82.30mm)		 13th Driest
Driest since:
 1905
115th Wettest
Wettest since:
 1928
Apr 1920–Jan 1921
10-Month 		11.61"
(294.89mm)		 13.56"
(344.42mm)		 -1.95"
(-49.53mm)		 28th Driest
Driest since:
 1905
100th Wettest
Wettest since:
 1928
Mar 1920–Jan 1921
11-Month 		12.18"
(309.37mm)		 14.37"
(365.00mm)		 -2.19"
(-55.63mm)		 27th Driest
Driest since:
 1905
101st Wettest
Wettest since:
 1928
Feb 1920–Jan 1921
12-Month 		12.86"
(326.64mm)		 14.98"
(380.49mm)		 -2.12"
(-53.85mm)		 28th Driest
Driest since:
 1919
100th Wettest
Wettest since:
 1928
Ties: 1988
Aug 1919–Jan 1921
18-Month 		18.66"
(473.96mm)		 20.76"
(527.30mm)		 -2.10"
(-53.34mm)		 27th Driest
Driest since:
 2002
100th Wettest
Wettest since:
 1928
Feb 1919–Jan 1921
24-Month 		24.00"
(609.60mm)		 30.01"
(762.25mm)		 -6.01"
(-152.65mm)		 9th Driest
Driest since:
 1920
118th Wettest
Wettest since:
 1917
Feb 1918–Jan 1921
36-Month 		33.58"
(852.93mm)		 45.06"
(1,144.52mm)		 -11.48"
(-291.59mm)		 1st Driest
Driest since:
 1921
125th Wettest
Wettest since:
 1899
Feb 1917–Jan 1921
48-Month 		47.42"
(1,204.47mm)		 60.16"
(1,528.06mm)		 -12.74"
(-323.59mm)		 1st Driest
Driest since:
 1921
124th Wettest
Wettest since:
 1900
Feb 1916–Jan 1921
60-Month 		67.08"
(1,703.83mm)		 75.31"
(1,912.87mm)		 -8.23"
(-209.04mm)		 12th Driest
Driest since:
 1922
112th Wettest
Wettest since:
 1900

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