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 1955

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1955
1-Month
52.9°F
(11.6°C)
53.8°F
(12.1°C)
-0.9°F
(-0.5°C)
38th Coolest
Coolest since:
1965
91st Warmest
Warmest since:
1998
Aug–Sep 1955
2-Month
59.6°F
(15.3°C)
59.0°F
(15.0°C)
0.6°F
(0.3°C)
75th Coolest
Coolest since:
1965
54th Warmest
Warmest since:
2022
Ties: 1943, 1973, 1996, 2008, 2016
Jul–Sep 1955
3-Month
61.4°F
(16.3°C)
61.2°F
(16.2°C)
0.2°F
(0.1°C)
56th Coolest
Coolest since:
1912
73rd Warmest
Warmest since:
2022
Ties: 1908, 1971, 1984, 2018
Jun–Sep 1955
4-Month
60.3°F
(15.7°C)
60.5°F
(15.8°C)
-0.2°F
(-0.1°C)
46th Coolest
Coolest since:
1993
83rd Warmest
Warmest since:
2021
Ties: 1898, 1906, 1925, 1947, 1974
May–Sep 1955
5-Month
57.9°F
(14.4°C)
58.4°F
(14.7°C)
-0.5°F
(-0.3°C)
41st Coolest
Coolest since:
1907
88th Warmest
Warmest since:
1936
Ties: 1906, 1995
Apr–Sep 1955
6-Month
54.8°F
(12.7°C)
55.5°F
(13.1°C)
-0.7°F
(-0.4°C)
35th Coolest
Coolest since:
1907
94th Warmest
Warmest since:
1936
Mar–Sep 1955
7-Month
50.0°F
(10.0°C)
51.7°F
(10.9°C)
-1.7°F
(-0.9°C)
15th Coolest
Coolest since:
1965
114th Warmest
Warmest since:
2012
Feb–Sep 1955
8-Month
45.8°F
(7.7°C)
47.9°F
(8.8°C)
-2.1°F
(-1.1°C)
12th Coolest
Coolest since:
1899
117th Warmest
Warmest since:
2012, 2016
Jan–Sep 1955
9-Month
42.8°F
(6.0°C)
44.5°F
(6.9°C)
-1.7°F
(-0.9°C)
22nd Coolest
Coolest since:
1899
107th Warmest
Warmest since:
2012
Ties: 1909, 1943
Dec 1954–Sep 1955
10-Month
41.2°F
(5.1°C)
42.1°F
(5.6°C)
-0.9°F
(-0.5°C)
36th Coolest
Coolest since:
1950
92nd Warmest
Warmest since:
2012
Ties: 1918
Nov 1954–Sep 1955
11-Month
40.9°F
(4.9°C)
41.0°F
(5.0°C)
-0.1°F
(-0.1°C)
55th Coolest
Coolest since:
1899
73rd Warmest
Warmest since:
2012
Ties: 2018
Oct 1954–Sep 1955
12-Month
41.0°F
(5.0°C)
41.2°F
(5.1°C)
-0.2°F
(-0.1°C)
51st Coolest
Coolest since:
1899
77th Warmest
Warmest since:
2012
Ties: 1932, 1933, 1986, 2014
Apr 1954–Sep 1955
18-Month
45.3°F
(7.4°C)
45.9°F
(7.7°C)
-0.6°F
(-0.3°C)
35th Coolest
Coolest since:
1917
93rd Warmest
Warmest since:
2016
Ties: 1947, 1971
Oct 1953–Sep 1955
24-Month
41.4°F
(5.2°C)
41.1°F
(5.1°C)
0.3°F
(0.1°C)
71st Coolest
Coolest since:
1917
56th Warmest
Warmest since:
2016
Ties: 2010, 2020
Oct 1952–Sep 1955
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: 1946
Oct 1951–Sep 1955
48-Month
41.2°F
(5.1°C)
41.1°F
(5.1°C)
0.1°F
(0.0°C)
66th Coolest
Coolest since:
1952
59th Warmest
Warmest since:
2007, 2017, 2018
Ties: 1921, 1939, 1948, 1956, 1960, 1962
Oct 1950–Sep 1955
60-Month
40.8°F
(4.9°C)
41.1°F
(5.1°C)
-0.3°F
(-0.2°C)
34th Coolest
Coolest since:
1952
90th Warmest
Warmest since:
2016
Ties: 1908, 1909, 1923, 1931, 1974, 1982

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