S
M
T
W
T
F
S
31
83°
65°
1
79°
65°
2
81°
66°
3
82°
64°
4
79°
64°
5
84°
66°
6
83°
67°
7
84°
69°
8
89°
66°
9
87°
68°
10
88°
69°
11
88°
70°
12
89°
70°
13
88°
69°
14
90°
70°
15
85°
70°
16
85°
71°
17
89°
71°
18
89°
70°
19
90°
71°
20
87°
71°
21
89°
72°
22
89°
71°
23
90°
72°
24
90°
72°
25
88°
71°
26
92°
72°
27
92°
72°
28
91°
73°
29
93°
73°
30
92°
72°
1
92°
72°
2
87°
73°
3
88°
71°
4
88°
71°
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 79° to 93°, with overnight lows between 64° and 73°. The average high for June is 87° with an average low of 70°. 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.
