Statewide Rankings

Statewide 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

Average Temperature Rankings, September 2017

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2017
1-Month
55.2°F
(12.9°C)
53.8°F
(12.1°C)
1.4°F
(0.8°C)
84th Coolest
Coolest since:
1965
45th Warmest
Warmest since:
1998
Ties: 1917
Aug–Sep 2017
2-Month
60.4°F
(15.8°C)
59.0°F
(15.0°C)
1.4°F
(0.8°C)
89th Coolest
Coolest since:
1965
40th Warmest
Warmest since:
2022
Ties: 1976, 2007
Jul–Sep 2017
3-Month
64.1°F
(17.8°C)
61.2°F
(16.2°C)
2.9°F
(1.6°C)
118th Coolest
Coolest since:
1912
11th Warmest
Warmest since:
2022
Jun–Sep 2017
4-Month
63.2°F
(17.3°C)
60.4°F
(15.8°C)
2.8°F
(1.5°C)
116th Coolest
Coolest since:
1993
13th Warmest
Warmest since:
2021
Ties: 1998, 2013
May–Sep 2017
5-Month
61.0°F
(16.1°C)
58.4°F
(14.7°C)
2.6°F
(1.4°C)
117th Coolest
Coolest since:
1907
12th Warmest
Warmest since:
1936
Apr–Sep 2017
6-Month
57.9°F
(14.4°C)
55.5°F
(13.1°C)
2.4°F
(1.3°C)
120th Coolest
Coolest since:
1907
9th Warmest
Warmest since:
1936
Ties: 1940, 2001, 2003
Mar–Sep 2017
7-Month
54.7°F
(12.6°C)
51.7°F
(10.9°C)
3.0°F
(1.7°C)
122nd Coolest
Coolest since:
1965
7th Warmest
Warmest since:
2012
Feb–Sep 2017
8-Month
51.1°F
(10.6°C)
48.0°F
(8.9°C)
3.1°F
(1.7°C)
124th Coolest
Coolest since:
1899
5th Warmest
Warmest since:
2012, 2016
Ties: 1998, 2007
Jan–Sep 2017
9-Month
47.1°F
(8.4°C)
44.5°F
(6.9°C)
2.6°F
(1.5°C)
112th Coolest
Coolest since:
1899
17th Warmest
Warmest since:
2012
Dec 2016–Sep 2017
10-Month
43.8°F
(6.6°C)
42.1°F
(5.6°C)
1.7°F
(1.0°C)
97th Coolest
Coolest since:
1950
31st Warmest
Warmest since:
2012
Ties: 1900, 1986, 2001
Nov 2016–Sep 2017
11-Month
43.4°F
(6.3°C)
41.0°F
(5.0°C)
2.4°F
(1.3°C)
109th Coolest
Coolest since:
1899
19th Warmest
Warmest since:
2012
Ties: 1940
Oct 2016–Sep 2017
12-Month
43.4°F
(6.3°C)
41.1°F
(5.1°C)
2.3°F
(1.2°C)
111th Coolest
Coolest since:
1899
17th Warmest
Warmest since:
2012
Ties: 1940, 1963, 1990, 2003, 2022
Apr 2016–Sep 2017
18-Month
48.0°F
(8.9°C)
45.9°F
(7.7°C)
2.1°F
(1.2°C)
113th Coolest
Coolest since:
1917
15th Warmest
Warmest since:
2016
Ties: 1999
Oct 2015–Sep 2017
24-Month
44.2°F
(6.8°C)
41.1°F
(5.1°C)
3.1°F
(1.7°C)
125th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2016
Ties: 1988, 2007
Oct 2014–Sep 2017
36-Month
44.3°F
(6.8°C)
41.1°F
(5.1°C)
3.2°F
(1.7°C)
125th Coolest
Coolest since:
1951
1st Warmest
Warmest to Date
2017
Oct 2013–Sep 2017
48-Month
43.5°F
(6.4°C)
41.1°F
(5.1°C)
2.4°F
(1.3°C)
124th Coolest
Coolest since:
1952
1st Warmest
Warmest since:
2007, 2017, 2018
Ties: 2007, 2018
Oct 2012–Sep 2017
60-Month
43.4°F
(6.3°C)
41.1°F
(5.1°C)
2.3°F
(1.2°C)
121st Coolest
Coolest since:
1952
3rd Warmest
Warmest since:
2016

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