S
M
T
W
T
F
S
30
68°
48°
31
67°
49°
1
69°
50°
2
70°
52°
3
71°
53°
4
71°
48°
5
69°
48°
6
67°
50°
7
69°
49°
8
70°
48°
9
70°
52°
10
69°
52°
11
70°
51°
12
70°
47°
13
67°
45°
14
65°
50°
15
64°
51°
16
65°
53°
17
66°
51°
18
68°
50°
19
65°
52°
20
68°
51°
21
69°
49°
22
67°
46°
23
62°
44°
24
62°
45°
25
63°
46°
26
65°
45°
27
64°
47°
28
61°
51°
29
64°
50°
30
64°
49°
1
65°
50°
2
66°
49°
3
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St Leonards
St Leonards's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 42° and 53°. The average high for September is 67° with an average low of 49°. 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 St Leonards. See also: October | November | December.