S
M
T
W
T
F
S
31
99°
72°
1
96°
71°
2
85°
66°
3
85°
69°
4
90°
69°
5
89°
71°
6
85°
70°
7
85°
69°
8
96°
76°
9
94°
76°
10
95°
75°
11
95°
76°
12
88°
68°
13
98°
69°
14
80°
66°
15
84°
68°
16
94°
63°
17
101°
75°
18
82°
61°
19
89°
65°
20
93°
67°
21
93°
68°
22
82°
67°
23
80°
65°
24
80°
69°
25
92°
74°
26
92°
72°
27
92°
70°
28
99°
78°
29
99°
76°
30
97°
77°
1
96°
75°
2
99°
75°
3
102°
73°
4
104°
73°
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 96° to 104°, with overnight lows between 73° and 78°. The average high for June is 99° with an average low of 75°. 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.
