Climate at a Glance

City Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2019. For more information, please see Climatological Rankings.


Helena, Montana

Average Temperature Rankings, May 1970

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  • Record Warmest
Period Value 1981-2010
Mean
Amomaly Rank
(1938-2019)
Warmest/Coolest
Since
Record
May 1970
1-Month
52.7°F
(11.5°C)
53.8°F
(12.1°C)
-1.1°F
(-0.6°C)
36th Coolest Coolest since: 1968 2010
46th Warmest Warmest since: 1969 1958
Apr–May 1970
2-Month
45.2°F
(7.3°C)
49.3°F
(9.6°C)
-4.1°F
(-2.3°C)
4th Coolest Coolest since: 1967 1975
78th Warmest Warmest since: 1969 1987
Mar–May 1970
3-Month
39.9°F
(4.4°C)
44.8°F
(7.1°C)
-4.9°F
(-2.7°C)
7th Coolest Coolest since: 1967 1975
73rd Warmest Warmest since: 1969 1992
Feb–May 1970
4-Month
38.4°F
(3.6°C)
40.5°F
(4.7°C)
-2.1°F
(-1.1°C)
25th Coolest Coolest since: 1969 2019
55th Warmest Warmest since: 1968 1992
Ties: 1945, 1957
Jan–May 1970
5-Month
34.7°F
(1.5°C)
37.0°F
(2.8°C)
-2.3°F
(-1.3°C)
23rd Coolest Coolest since: 1969 1943
57th Warmest Warmest since: 1968 1992
Ties: 1954, 1964, 2011
Dec 1969–May 1970
6-Month
33.4°F
(0.8°C)
34.4°F
(1.3°C)
-1.0°F
(-0.5°C)
36th Coolest Coolest since: 1969 1949
43rd Warmest Warmest since: 1967 1992
Nov 1969–May 1970
7-Month
33.6°F
(0.9°C)
34.2°F
(1.2°C)
-0.6°F
(-0.3°C)
37th Coolest Coolest since: 1969 1979
42nd Warmest Warmest since: 1967 2000
Ties: 1978, 2008
Oct 1969–May 1970
8-Month
34.3°F
(1.3°C)
35.5°F
(1.9°C)
-1.2°F
(-0.6°C)
32nd Coolest Coolest since: 1969 1949
46th Warmest Warmest since: 1968 2000
Sep 1969–May 1970
9-Month
37.1°F
(2.8°C)
38.0°F
(3.3°C)
-0.9°F
(-0.5°C)
33rd Coolest Coolest since: 1969 1949
45th Warmest Warmest since: 1968 2000
Aug 1969–May 1970
10-Month
40.5°F
(4.7°C)
41.0°F
(5.0°C)
-0.5°F
(-0.3°C)
35th Coolest Coolest since: 1969 1949, 1979
43rd Warmest Warmest since: 1968 2000
Ties: 1982
Jul 1969–May 1970
11-Month
43.1°F
(6.2°C)
43.6°F
(6.4°C)
-0.5°F
(-0.2°C)
37th Coolest Coolest since: 1969 1949
41st Warmest Warmest since: 1968 2016
Ties: 1966
Jun 1969–May 1970
12-Month
44.4°F
(6.9°C)
45.1°F
(7.3°C)
-0.7°F
(-0.4°C)
35th Coolest Coolest since: 1969 1949
43rd Warmest Warmest since: 1968 2016
Ties: 1978
Dec 1968–May 1970
18-Month
39.0°F
(3.9°C)
41.6°F
(5.3°C)
-2.6°F
(-1.4°C)
10th Coolest Coolest since: 1969 1950
65th Warmest Warmest since: 1968 2000
Jun 1968–May 1970
24-Month
43.0°F
(6.1°C)
45.2°F
(7.3°C)
-2.2°F
(-1.2°C)
10th Coolest Coolest since: 1957 1952
64th Warmest Warmest since: 1969 2000, 2017
Jun 1967–May 1970
36-Month
43.7°F
(6.5°C)
45.2°F
(7.3°C)
-1.5°F
(-0.8°C)
13th Coolest Coolest since: 1958 1951
57th Warmest Warmest since: 1969 1992, 2000
Ties: 1943, 1958, 1972, 1979, 1987
Jun 1966–May 1970
48-Month
44.3°F
(6.8°C)
45.2°F
(7.3°C)
-0.9°F
(-0.5°C)
25th Coolest Coolest since: 1969 1952
41st Warmest Warmest since: 1969 2002
Ties: 1943, 1948, 1965, 1969, 1988
Jun 1965–May 1970
60-Month
44.3°F
(6.8°C)
45.2°F
(7.3°C)
-0.9°F
(-0.5°C)
24th Coolest Coolest since: 1969 1952
38th Warmest Warmest since: 1968 1992, 2002
Ties: 1961, 1963, 1980, 1989

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: City Time Series, published September 2019, retrieved on September 22, 2019 from https://www.ncdc.noaa.gov/cag/