S
M
T
W
T
F
S
30
90°
68°
31
96°
73°
1
95°
73°
2
96°
75°
3
98°
73°
4
101°
75°
5
91°
71°
6
88°
67°
7
85°
66°
8
87°
62°
9
89°
66°
10
98°
72°
11
91°
74°
12
88°
72°
13
87°
73°
14
87°
66°
15
82°
58°
16
83°
60°
17
89°
65°
18
92°
70°
19
85°
72°
20
90°
70°
21
86°
71°
22
80°
65°
23
68°
61°
24
70°
54°
25
71°
53°
26
74°
55°
27
75°
54°
28
75°
56°
29
76°
57°
30
77°
59°
1
78°
59°
2
73°
55°
3
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Scotland
Scotland's September 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 53° and 65°. The average high for September is 74° with an average low of 57°. 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 Scotland. See also: October | November | December.