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 1946

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1946
1-Month
53.0°F
(11.7°C)
53.8°F
(12.1°C)
-0.8°F
(-0.4°C)
39th Coolest
Coolest since:
1965
90th Warmest
Warmest since:
1998
Ties: 1973, 2018
Aug–Sep 1946
2-Month
58.0°F
(14.4°C)
59.0°F
(15.0°C)
-1.0°F
(-0.6°C)
35th Coolest
Coolest since:
1965
94th Warmest
Warmest since:
2022
Ties: 1954, 1962, 1972
Jul–Sep 1946
3-Month
61.0°F
(16.1°C)
61.2°F
(16.2°C)
-0.2°F
(-0.1°C)
49th Coolest
Coolest since:
1912
80th Warmest
Warmest since:
2022
Ties: 1925, 1995
Jun–Sep 1946
4-Month
60.1°F
(15.6°C)
60.5°F
(15.8°C)
-0.4°F
(-0.2°C)
40th Coolest
Coolest since:
1993
89th Warmest
Warmest since:
2021
Ties: 1958, 1986
May–Sep 1946
5-Month
57.7°F
(14.3°C)
58.4°F
(14.7°C)
-0.7°F
(-0.4°C)
34th Coolest
Coolest since:
1907
95th Warmest
Warmest since:
1936
Ties: 1926, 1928, 1944, 1978
Apr–Sep 1946
6-Month
55.7°F
(13.2°C)
55.5°F
(13.1°C)
0.2°F
(0.1°C)
72nd Coolest
Coolest since:
1907
57th Warmest
Warmest since:
1936
Ties: 1906, 1914, 1923, 1957, 1979
Mar–Sep 1946
7-Month
53.0°F
(11.7°C)
51.7°F
(10.9°C)
1.3°F
(0.8°C)
95th Coolest
Coolest since:
1965
34th Warmest
Warmest since:
2012
Ties: 1933, 1949, 1991, 2005
Feb–Sep 1946
8-Month
49.4°F
(9.7°C)
47.9°F
(8.8°C)
1.5°F
(0.9°C)
98th Coolest
Coolest since:
1899
31st Warmest
Warmest since:
2012, 2016
Ties: 1926, 1976, 1984, 2020
Jan–Sep 1946
9-Month
46.5°F
(8.1°C)
44.5°F
(6.9°C)
2.0°F
(1.2°C)
104th Coolest
Coolest since:
1899
25th Warmest
Warmest since:
2012
Ties: 1984, 1994, 2020
Dec 1945–Sep 1946
10-Month
43.6°F
(6.4°C)
42.1°F
(5.6°C)
1.5°F
(0.8°C)
90th Coolest
Coolest since:
1950
38th Warmest
Warmest since:
2012
Ties: 1953
Nov 1945–Sep 1946
11-Month
42.1°F
(5.6°C)
41.0°F
(5.0°C)
1.1°F
(0.6°C)
91st Coolest
Coolest since:
1899
37th Warmest
Warmest since:
2012
Ties: 1941
Oct 1945–Sep 1946
12-Month
42.4°F
(5.8°C)
41.2°F
(5.1°C)
1.2°F
(0.7°C)
95th Coolest
Coolest since:
1899
33rd Warmest
Warmest since:
2012
Ties: 1921, 1926, 1953, 1977, 2020
Apr 1945–Sep 1946
18-Month
46.1°F
(7.8°C)
45.9°F
(7.7°C)
0.2°F
(0.1°C)
67th Coolest
Coolest since:
1917
61st Warmest
Warmest since:
2016
Ties: 1948, 1954, 1974, 1984
Oct 1944–Sep 1946
24-Month
41.7°F
(5.4°C)
41.1°F
(5.1°C)
0.6°F
(0.3°C)
80th Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2016
Ties: 1958, 1959, 1962, 1967
Oct 1943–Sep 1946
36-Month
41.8°F
(5.4°C)
41.1°F
(5.1°C)
0.7°F
(0.3°C)
87th Coolest
Coolest since:
1951
39th Warmest
Warmest since:
2017
Ties: 1955
Oct 1942–Sep 1946
48-Month
41.4°F
(5.2°C)
41.1°F
(5.1°C)
0.3°F
(0.1°C)
76th Coolest
Coolest since:
1952
49th Warmest
Warmest since:
2007, 2017, 2018
Ties: 1944, 1947, 1997
Oct 1941–Sep 1946
60-Month
41.3°F
(5.2°C)
41.1°F
(5.1°C)
0.2°F
(0.1°C)
66th Coolest
Coolest since:
1952
58th Warmest
Warmest since:
2016
Ties: 1933, 1939, 1981

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