S
M
T
W
T
F
S
31
52°
43°
1
57°
41°
2
59°
45°
3
74°
43°
4
74°
52°
5
80°
46°
6
73°
54°
7
58°
41°
8
76°
34°
9
70°
49°
10
59°
45°
11
71°
47°
12
75°
43°
13
63°
46°
14
73°
39°
15
83°
43°
16
86°
59°
17
76°
52°
18
76°
46°
19
78°
47°
20
78°
52°
21
79°
49°
22
70°
46°
23
79°
47°
24
82°
50°
25
79°
52°
26
83°
53°
27
70°
48°
28
63°
47°
29
72°
51°
30
78°
52°
1
82°
57°
2
84°
58°
3
85°
51°
4
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Helena
Helena's June 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 46° and 58°. The average high for June is 78° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Helena. See also: July | August | September.
