S
M
T
W
T
F
S
31
84°
66°
1
90°
70°
2
82°
66°
3
83°
64°
4
86°
67°
5
87°
69°
6
88°
73°
7
82°
70°
8
87°
72°
9
90°
72°
10
90°
75°
11
87°
61°
12
85°
56°
13
86°
65°
14
77°
59°
15
82°
52°
16
80°
61°
17
93°
62°
18
80°
59°
19
82°
55°
20
82°
68°
21
75°
58°
22
75°
61°
23
77°
61°
24
82°
58°
25
78°
60°
26
74°
62°
27
77°
65°
28
81°
67°
29
86°
65°
30
82°
67°
1
84°
65°
2
85°
66°
3
86°
67°
4
82°
70°
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 74° to 86°, with overnight lows between 58° and 70°. The average high for June is 80° with an average low of 64°. 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.
