S
M
T
W
T
F
S
26
66°
50°
27
66°
48°
28
70°
59°
29
63°
50°
30
63°
46°
31
63°
43°
1
63°
50°
2
66°
48°
3
64°
52°
4
70°
57°
5
61°
55°
6
63°
54°
7
64°
55°
8
66°
54°
9
64°
52°
10
64°
48°
11
75°
48°
12
75°
54°
13
75°
57°
14
66°
57°
15
64°
52°
16
63°
54°
17
61°
56°
18
62°
53°
19
60°
50°
20
63°
46°
21
62°
43°
22
64°
46°
23
65°
46°
24
65°
51°
25
64°
52°
26
63°
50°
27
65°
50°
28
64°
51°
29
62°
50°
30
61°
51°
31
61°
51°
1
62°
52°
2
61°
52°
3
61°
51°
4
62°
50°
5
61°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port Glasgow
Port Glasgow's August 2026 forecast shows daily high temperatures ranging from 60° to 65°, with overnight lows between 43° and 56°. The average high for August is 62° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Port Glasgow. See also: September | October | November.
