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 1990

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1990
1-Month
60.3°F
(15.7°C)
53.8°F
(12.1°C)
6.5°F
(3.6°C)
124th Coolest
Coolest since:
1965
5th Warmest
Warmest since:
1998
Aug–Sep 1990
2-Month
63.2°F
(17.3°C)
58.9°F
(14.9°C)
4.3°F
(2.4°C)
125th Coolest
Coolest since:
1965
4th Warmest
Warmest to Date
2022
Jul–Sep 1990
3-Month
64.0°F
(17.8°C)
61.2°F
(16.2°C)
2.8°F
(1.6°C)
117th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2022
Ties: 1967
Jun–Sep 1990
4-Month
62.7°F
(17.1°C)
60.4°F
(15.8°C)
2.3°F
(1.3°C)
111th Coolest
Coolest since:
1993
18th Warmest
Warmest since:
2021
Ties: 1938
May–Sep 1990
5-Month
59.9°F
(15.5°C)
58.4°F
(14.7°C)
1.5°F
(0.8°C)
106th Coolest
Coolest since:
1907
23rd Warmest
Warmest since:
1936
Ties: 1922, 1934, 1938, 1963
Apr–Sep 1990
6-Month
57.0°F
(13.9°C)
55.5°F
(13.1°C)
1.5°F
(0.8°C)
105th Coolest
Coolest since:
1907
24th Warmest
Warmest since:
1936
Ties: 2000, 2022
Mar–Sep 1990
7-Month
53.6°F
(12.0°C)
51.7°F
(10.9°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1965
20th Warmest
Warmest since:
2012
Ties: 1900, 1930, 2022
Feb–Sep 1990
8-Month
49.9°F
(9.9°C)
47.9°F
(8.8°C)
2.0°F
(1.1°C)
107th Coolest
Coolest since:
1899
22nd Warmest
Warmest since:
2012, 2016
Ties: 1977, 2013
Jan–Sep 1990
9-Month
47.2°F
(8.4°C)
44.5°F
(6.9°C)
2.7°F
(1.5°C)
113th Coolest
Coolest since:
1899
16th Warmest
Warmest since:
2012
Dec 1989–Sep 1990
10-Month
44.5°F
(6.9°C)
42.1°F
(5.6°C)
2.4°F
(1.3°C)
111th Coolest
Coolest since:
1950
17th Warmest
Warmest since:
2012
Ties: 1926, 1983, 1994, 2005, 2020
Nov 1989–Sep 1990
11-Month
43.5°F
(6.4°C)
41.0°F
(5.0°C)
2.5°F
(1.4°C)
111th Coolest
Coolest since:
1899
17th Warmest
Warmest since:
2012
Ties: 2005
Oct 1989–Sep 1990
12-Month
43.4°F
(6.3°C)
41.1°F
(5.1°C)
2.3°F
(1.2°C)
110th Coolest
Coolest since:
1899
18th Warmest
Warmest since:
2012
Ties: 1940, 1963, 2003, 2017
Apr 1989–Sep 1990
18-Month
47.6°F
(8.7°C)
45.9°F
(7.7°C)
1.7°F
(1.0°C)
106th Coolest
Coolest since:
1917
22nd Warmest
Warmest since:
2016
Oct 1988–Sep 1990
24-Month
42.3°F
(5.7°C)
41.1°F
(5.1°C)
1.2°F
(0.6°C)
96th Coolest
Coolest since:
1917
31st Warmest
Warmest since:
2016
Ties: 1995, 2018
Oct 1987–Sep 1990
36-Month
43.0°F
(6.1°C)
41.1°F
(5.1°C)
1.9°F
(1.0°C)
113th Coolest
Coolest since:
1951
13th Warmest
Warmest since:
2017
Ties: 2005, 2013, 2014
Oct 1986–Sep 1990
48-Month
43.2°F
(6.2°C)
41.0°F
(5.0°C)
2.2°F
(1.2°C)
116th Coolest
Coolest since:
1952
9th Warmest
Warmest to Date
2007, 2017, 2018
Oct 1985–Sep 1990
60-Month
42.8°F
(6.0°C)
41.1°F
(5.1°C)
1.7°F
(0.9°C)
109th Coolest
Coolest since:
1952
15th Warmest
Warmest to Date
2016
Ties: 2001

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