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 2021

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  • Record Warmest
PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
May 2021
1-Month
48.6°F
(9.2°C)
50.2°F
(10.1°C)
-1.6°F
(-0.9°C)
39th Coolest
Coolest since:
1907, 1927
90th Warmest
Warmest since:
1934
Ties: 1920, 2022
Apr–May 2021
2-Month
44.6°F
(7.0°C)
45.5°F
(7.5°C)
-0.9°F
(-0.5°C)
48th Coolest
Coolest since:
1975
81st Warmest
Warmest since:
1934
Ties: 1956
Mar–May 2021
3-Month
41.7°F
(5.4°C)
40.1°F
(4.5°C)
1.6°F
(0.9°C)
92nd Coolest
Coolest since:
1899
37th Warmest
Warmest since:
1910
Feb–May 2021
4-Month
34.7°F
(1.5°C)
35.4°F
(1.9°C)
-0.7°F
(-0.4°C)
52nd Coolest
Coolest since:
1899
77th Warmest
Warmest since:
1992
Ties: 1943, 1945, 1949
Jan–May 2021
5-Month
33.1°F
(0.6°C)
31.7°F
(-0.2°C)
1.4°F
(0.8°C)
83rd Coolest
Coolest since:
1899
46th Warmest
Warmest since:
1992
Dec 2020–May 2021
6-Month
32.4°F
(0.2°C)
29.9°F
(-1.2°C)
2.5°F
(1.4°C)
100th Coolest
Coolest since:
1917
28th Warmest
Warmest since:
1992
Ties: 1900, 1990, 1994
Nov 2020–May 2021
7-Month
32.4°F
(0.2°C)
29.8°F
(-1.2°C)
2.6°F
(1.4°C)
107th Coolest
Coolest since:
1899
21st Warmest
Warmest since:
1992
Ties: 1990
Oct 2020–May 2021
8-Month
33.3°F
(0.7°C)
31.5°F
(-0.3°C)
1.8°F
(1.0°C)
97th Coolest
Coolest since:
1899
31st Warmest
Warmest since:
1934, 2000
Ties: 1976
Sep 2020–May 2021
9-Month
35.9°F
(2.2°C)
34.0°F
(1.1°C)
1.9°F
(1.1°C)
101st Coolest
Coolest since:
1899
27th Warmest
Warmest since:
2016
Ties: 2003, 2017
Aug 2020–May 2021
10-Month
39.1°F
(3.9°C)
37.0°F
(2.8°C)
2.1°F
(1.1°C)
109th Coolest
Coolest since:
1917
19th Warmest
Warmest since:
1992, 2016
Ties: 1958, 1964
Jul 2020–May 2021
11-Month
41.5°F
(5.3°C)
39.6°F
(4.2°C)
1.9°F
(1.1°C)
106th Coolest
Coolest since:
1917
22nd Warmest
Warmest since:
1992, 2016
Ties: 1964, 1990
Jun 2020–May 2021
12-Month
43.0°F
(6.1°C)
41.1°F
(5.1°C)
1.9°F
(1.0°C)
108th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2016
Ties: 1958, 2005, 2017
Dec 2019–May 2021
18-Month
39.5°F
(4.2°C)
37.4°F
(3.0°C)
2.1°F
(1.2°C)
110th Coolest
Coolest since:
1917
17th Warmest
Warmest since:
2016
Ties: 1935, 1941
Jun 2019–May 2021
24-Month
42.5°F
(5.8°C)
41.1°F
(5.1°C)
1.4°F
(0.7°C)
100th Coolest
Coolest since:
1917
27th Warmest
Warmest since:
2016
Ties: 1932, 1939, 1990, 2014
Jun 2018–May 2021
36-Month
41.8°F
(5.4°C)
41.1°F
(5.1°C)
0.7°F
(0.3°C)
85th Coolest
Coolest since:
1918
41st Warmest
Warmest since:
2017
Ties: 1926, 1933, 1955, 2019
Jun 2017–May 2021
48-Month
41.8°F
(5.4°C)
41.1°F
(5.1°C)
0.7°F
(0.3°C)
84th Coolest
Coolest since:
1899, 1952
41st Warmest
Warmest since:
2016
Ties: 2020
Jun 2016–May 2021
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, 1989

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