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, May 1989

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1989
1-Month
49.9°F
(9.9°C)
50.2°F
(10.1°C)
-0.3°F
(-0.2°C)
66th Coolest
Coolest since:
1907, 1927
63rd Warmest
Warmest since:
1934
Apr–May 1989
2-Month
45.5°F
(7.5°C)
45.5°F
(7.5°C)
0.0°F
(0.0°C)
66th Coolest
Coolest since:
1975
63rd Warmest
Warmest since:
1934
Ties: 1912
Mar–May 1989
3-Month
39.2°F
(4.0°C)
40.1°F
(4.5°C)
-0.9°F
(-0.5°C)
43rd Coolest
Coolest since:
1899
86th Warmest
Warmest since:
1910
Ties: 1929
Feb–May 1989
4-Month
31.8°F
(-0.1°C)
35.4°F
(1.9°C)
-3.6°F
(-2.0°C)
11th Coolest
Coolest since:
1899
118th Warmest
Warmest since:
1992
Ties: 1951
Jan–May 1989
5-Month
29.7°F
(-1.3°C)
31.7°F
(-0.2°C)
-2.0°F
(-1.1°C)
29th Coolest
Coolest since:
1899
100th Warmest
Warmest since:
1992
Ties: 1920
Dec 1988–May 1989
6-Month
28.6°F
(-1.9°C)
29.9°F
(-1.2°C)
-1.3°F
(-0.7°C)
39th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
1992
Nov 1988–May 1989
7-Month
28.9°F
(-1.7°C)
29.8°F
(-1.2°C)
-0.9°F
(-0.5°C)
43rd Coolest
Coolest since:
1899
85th Warmest
Warmest since:
1992
Ties: 1932, 1971, 1993
Oct 1988–May 1989
8-Month
31.1°F
(-0.5°C)
31.5°F
(-0.3°C)
-0.4°F
(-0.2°C)
52nd Coolest
Coolest since:
1899
76th Warmest
Warmest since:
1934, 2000
Ties: 1930
Sep 1988–May 1989
9-Month
33.6°F
(0.9°C)
34.0°F
(1.1°C)
-0.4°F
(-0.2°C)
53rd Coolest
Coolest since:
1899
75th Warmest
Warmest since:
2016
Ties: 1918
Aug 1988–May 1989
10-Month
36.8°F
(2.7°C)
37.0°F
(2.8°C)
-0.2°F
(-0.1°C)
53rd Coolest
Coolest since:
1917
75th Warmest
Warmest since:
1992, 2016
Ties: 1932, 1959
Jul 1988–May 1989
11-Month
39.6°F
(4.2°C)
39.6°F
(4.2°C)
0.0°F
(0.0°C)
57th Coolest
Coolest since:
1917
71st Warmest
Warmest since:
1992, 2016
Ties: 1945
Jun 1988–May 1989
12-Month
42.0°F
(5.6°C)
41.1°F
(5.1°C)
0.9°F
(0.5°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2016
Ties: 2020
Dec 1987–May 1989
18-Month
39.0°F
(3.9°C)
37.4°F
(3.0°C)
1.6°F
(0.9°C)
100th Coolest
Coolest since:
1917
27th Warmest
Warmest since:
2016
Ties: 1984, 2012, 2015
Jun 1987–May 1989
24-Month
42.6°F
(5.9°C)
41.1°F
(5.1°C)
1.5°F
(0.8°C)
105th Coolest
Coolest since:
1917
22nd Warmest
Warmest since:
2016
Ties: 1942, 1964, 1993, 2003
Jun 1986–May 1989
36-Month
43.1°F
(6.2°C)
41.1°F
(5.1°C)
2.0°F
(1.1°C)
115th Coolest
Coolest since:
1918
11th Warmest
Warmest to Date
2017
Ties: 2005
Jun 1985–May 1989
48-Month
42.4°F
(5.8°C)
41.1°F
(5.1°C)
1.3°F
(0.7°C)
102nd Coolest
Coolest since:
1899, 1952
23rd Warmest
Warmest since:
2016
Ties: 2010, 2014
Jun 1984–May 1989
60-Month
42.0°F
(5.6°C)
41.1°F
(5.1°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1952
35th Warmest
Warmest since:
2016
Ties: 1944, 1964, 1988, 2021

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