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 1998

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1998
1-Month
61.4°F
(16.3°C)
53.8°F
(12.1°C)
7.6°F
(4.2°C)
128th Coolest
Coolest since:
1965
1st Warmest
Warmest to Date
1998
Aug–Sep 1998
2-Month
64.8°F
(18.2°C)
59.0°F
(15.0°C)
5.8°F
(3.2°C)
127th Coolest
Coolest since:
1965
2nd Warmest
Warmest to Date
2022
Jul–Sep 1998
3-Month
66.2°F
(19.0°C)
61.2°F
(16.2°C)
5.0°F
(2.8°C)
127th Coolest
Coolest since:
1912
2nd Warmest
Warmest to Date
2022
Jun–Sep 1998
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: 2013, 2017
May–Sep 1998
5-Month
61.1°F
(16.2°C)
58.4°F
(14.7°C)
2.7°F
(1.5°C)
119th Coolest
Coolest since:
1907
10th Warmest
Warmest since:
1936
Ties: 2012
Apr–Sep 1998
6-Month
58.2°F
(14.6°C)
55.4°F
(13.0°C)
2.8°F
(1.6°C)
123rd Coolest
Coolest since:
1907
6th Warmest
Warmest since:
1936
Mar–Sep 1998
7-Month
54.0°F
(12.2°C)
51.7°F
(10.9°C)
2.3°F
(1.3°C)
113th Coolest
Coolest since:
1965
16th Warmest
Warmest since:
2012
Ties: 2000
Feb–Sep 1998
8-Month
51.1°F
(10.6°C)
47.9°F
(8.8°C)
3.2°F
(1.8°C)
124th Coolest
Coolest since:
1899
5th Warmest
Warmest since:
2012, 2016
Ties: 2007, 2017
Jan–Sep 1998
9-Month
47.5°F
(8.6°C)
44.4°F
(6.9°C)
3.1°F
(1.7°C)
117th Coolest
Coolest since:
1899
12th Warmest
Warmest since:
2012
Ties: 1961
Dec 1997–Sep 1998
10-Month
45.4°F
(7.4°C)
42.1°F
(5.6°C)
3.3°F
(1.8°C)
116th Coolest
Coolest since:
1950
12th Warmest
Warmest since:
2012
Nov 1997–Sep 1998
11-Month
44.0°F
(6.7°C)
41.0°F
(5.0°C)
3.0°F
(1.7°C)
115th Coolest
Coolest since:
1899
13th Warmest
Warmest since:
2012
Ties: 1987, 2003
Oct 1997–Sep 1998
12-Month
43.9°F
(6.6°C)
41.1°F
(5.1°C)
2.8°F
(1.5°C)
118th Coolest
Coolest since:
1899
10th Warmest
Warmest since:
2012
Ties: 1992, 2007, 2021
Apr 1997–Sep 1998
18-Month
47.9°F
(8.8°C)
45.9°F
(7.7°C)
2.0°F
(1.1°C)
111th Coolest
Coolest since:
1917
17th Warmest
Warmest since:
2016
Ties: 1940
Oct 1996–Sep 1998
24-Month
42.2°F
(5.7°C)
41.1°F
(5.1°C)
1.1°F
(0.6°C)
93rd Coolest
Coolest since:
1917
34th Warmest
Warmest since:
2016
Ties: 1939, 1961
Oct 1995–Sep 1998
36-Month
41.6°F
(5.3°C)
41.1°F
(5.1°C)
0.5°F
(0.2°C)
81st Coolest
Coolest since:
1951
45th Warmest
Warmest since:
2017
Ties: 1926, 1964, 1987, 2019
Oct 1994–Sep 1998
48-Month
41.7°F
(5.4°C)
41.1°F
(5.1°C)
0.6°F
(0.3°C)
80th Coolest
Coolest since:
1952
45th Warmest
Warmest since:
2007, 2017, 2018
Oct 1993–Sep 1998
60-Month
41.9°F
(5.5°C)
41.1°F
(5.1°C)
0.8°F
(0.4°C)
88th Coolest
Coolest since:
1952
36th Warmest
Warmest since:
2016
Ties: 1943, 1964, 1999

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