S
M
T
W
T
F
S
31
63°
55°
1
64°
55°
2
66°
52°
3
63°
52°
4
61°
52°
5
61°
48°
6
60°
50°
7
60°
49°
8
60°
46°
9
58°
45°
10
59°
47°
11
60°
49°
12
59°
48°
13
60°
50°
14
61°
49°
15
64°
50°
16
63°
50°
17
64°
50°
18
65°
51°
19
60°
50°
20
59°
48°
21
60°
46°
22
59°
47°
23
60°
51°
24
60°
50°
25
61°
48°
26
60°
47°
27
60°
47°
28
61°
48°
29
61°
51°
30
62°
50°
1
61°
50°
2
61°
50°
3
62°
49°
4
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Helensburgh
Helensburgh's June 2026 forecast shows daily high temperatures ranging from 58° to 65°, with overnight lows between 45° and 51°. The average high for June is 61° with an average low of 49°. 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 Helensburgh. See also: July | August | September.
