S
M
T
W
T
F
S
30
82°
62°
31
82°
62°
1
83°
61°
2
83°
58°
3
77°
60°
4
82°
61°
5
80°
61°
6
77°
60°
7
76°
60°
8
75°
55°
9
75°
52°
10
74°
54°
11
76°
60°
12
81°
59°
13
79°
60°
14
76°
58°
15
79°
59°
16
71°
52°
17
75°
52°
18
Hist. Avg.
76°
53°
19
Hist. Avg.
75°
52°
20
Hist. Avg.
75°
52°
21
Hist. Avg.
75°
52°
22
Hist. Avg.
74°
51°
23
Hist. Avg.
74°
51°
24
Hist. Avg.
74°
50°
25
Hist. Avg.
73°
50°
26
Hist. Avg.
73°
50°
27
Hist. Avg.
72°
49°
28
Hist. Avg.
72°
49°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Glasgow
Glasgow's September 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 52° and 62°. The average high for September is 78° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Glasgow. See also: October | November | December.