S
M
T
W
T
F
S
30
63°
52°
31
62°
53°
1
65°
54°
2
65°
52°
3
66°
51°
4
66°
49°
5
65°
53°
6
65°
53°
7
64°
52°
8
65°
53°
9
65°
53°
10
64°
52°
11
64°
52°
12
63°
50°
13
62°
48°
14
60°
49°
15
59°
50°
16
60°
52°
17
63°
49°
18
63°
50°
19
60°
49°
20
61°
51°
21
63°
50°
22
62°
50°
23
58°
49°
24
60°
50°
25
61°
46°
26
61°
46°
27
57°
47°
28
58°
50°
29
61°
46°
30
59°
50°
1
60°
49°
2
60°
48°
3
57°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stevenston
Stevenston's September 2026 forecast shows daily high temperatures ranging from 57° to 66°, with overnight lows between 46° and 54°. The average high for September 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 September weather will actually feel in Stevenston. See also: October | November | December.
