S
M
T
W
T
F
S
30
67°
57°
31
71°
56°
1
71°
55°
2
70°
53°
3
67°
54°
4
69°
55°
5
68°
50°
6
69°
53°
7
67°
52°
8
69°
53°
9
65°
52°
10
65°
51°
11
64°
49°
12
64°
50°
13
65°
49°
14
64°
53°
15
63°
53°
16
66°
52°
17
65°
53°
18
66°
49°
19
67°
48°
20
62°
50°
21
63°
49°
22
62°
47°
23
62°
47°
24
61°
50°
25
62°
52°
26
63°
51°
27
65°
46°
28
63°
46°
29
60°
45°
30
61°
45°
1
60°
44°
2
61°
46°
3
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Southam
Southam's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 44° and 57°. The average high for September is 65° 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 Southam. See also: October | November | December.