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 1901

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1901
1-Month
48.7°F
(9.3°C)
53.8°F
(12.1°C)
-5.1°F
(-2.8°C)
6th Coolest
Coolest to Date
1965
123rd Warmest
Warmest since:
1998
Aug–Sep 1901
2-Month
57.2°F
(14.0°C)
59.0°F
(15.0°C)
-1.8°F
(-1.0°C)
23rd Coolest
Coolest since:
1965
106th Warmest
Warmest since:
2022
Ties: 1941
Jul–Sep 1901
3-Month
60.7°F
(15.9°C)
61.2°F
(16.2°C)
-0.5°F
(-0.3°C)
40th Coolest
Coolest since:
1912
89th Warmest
Warmest since:
2022
Ties: 1941, 1956, 1975, 1999, 2010
Jun–Sep 1901
4-Month
58.8°F
(14.9°C)
60.5°F
(15.8°C)
-1.7°F
(-0.9°C)
14th Coolest
Coolest since:
1993
115th Warmest
Warmest since:
2021
Ties: 1927, 1944
May–Sep 1901
5-Month
58.3°F
(14.6°C)
58.4°F
(14.7°C)
-0.1°F
(-0.1°C)
53rd Coolest
Coolest since:
1907
76th Warmest
Warmest since:
1936
Ties: 1910, 1918, 1984, 1996
Apr–Sep 1901
6-Month
55.4°F
(13.0°C)
55.5°F
(13.1°C)
-0.1°F
(-0.1°C)
56th Coolest
Coolest since:
1907
73rd Warmest
Warmest since:
1936
Ties: 1984
Mar–Sep 1901
7-Month
51.9°F
(11.1°C)
51.7°F
(10.9°C)
0.2°F
(0.2°C)
61st Coolest
Coolest since:
1965
68th Warmest
Warmest since:
2012
Ties: 1921, 1952, 1960
Feb–Sep 1901
8-Month
47.5°F
(8.6°C)
47.9°F
(8.8°C)
-0.4°F
(-0.2°C)
47th Coolest
Coolest since:
1899
82nd Warmest
Warmest since:
2012, 2016
Ties: 1908, 1936, 2014
Jan–Sep 1901
9-Month
44.3°F
(6.8°C)
44.5°F
(6.9°C)
-0.2°F
(-0.1°C)
55th Coolest
Coolest since:
1899
74th Warmest
Warmest since:
2012
Ties: 1923, 1932, 1944, 1970, 1971, 2018
Dec 1900–Sep 1901
10-Month
42.6°F
(5.9°C)
42.1°F
(5.6°C)
0.5°F
(0.3°C)
78th Coolest
Coolest since:
1950
50th Warmest
Warmest since:
2012
Ties: 1906, 1925, 1930
Nov 1900–Sep 1901
11-Month
41.1°F
(5.1°C)
41.0°F
(5.0°C)
0.1°F
(0.1°C)
60th Coolest
Coolest since:
1899
68th Warmest
Warmest since:
2012
Ties: 1933, 1942
Oct 1900–Sep 1901
12-Month
41.3°F
(5.2°C)
41.2°F
(5.1°C)
0.1°F
(0.1°C)
64th Coolest
Coolest since:
1899
64th Warmest
Warmest since:
2012
Apr 1900–Sep 1901
18-Month
46.6°F
(8.1°C)
45.9°F
(7.7°C)
0.7°F
(0.4°C)
84th Coolest
Coolest since:
1917
44th Warmest
Warmest to Date
2016
Ties: 1980
Oct 1899–Sep 1901
24-Month
42.1°F
(5.6°C)
41.1°F
(5.1°C)
1.0°F
(0.5°C)
90th Coolest
Coolest since:
1917
37th Warmest
Warmest to Date
2016
Ties: 1954, 1984
Oct 1898–Sep 1901
36-Month
40.3°F
(4.6°C)
41.1°F
(5.1°C)
-0.8°F
(-0.5°C)
19th Coolest
Coolest since:
1951
107th Warmest
Warmest to Date
2017
Ties: 1905, 1924, 1949, 1953, 1957, 1971
Oct 1897–Sep 1901
48-Month
40.3°F
(4.6°C)
41.1°F
(5.1°C)
-0.8°F
(-0.5°C)
18th Coolest
Coolest since:
1952
107th Warmest
Warmest to Date
2007, 2017, 2018
Ties: 1929
Oct 1896–Sep 1901
60-Month
40.2°F
(4.6°C)
41.1°F
(5.1°C)
-0.9°F
(-0.5°C)
12th Coolest
Coolest since:
1952
112th Warmest
Warmest to Date
2016
Ties: 1903, 1919, 1950, 1954

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