S
M
T
W
T
F
S
30
65°
54°
31
67°
53°
1
66°
52°
2
65°
53°
3
65°
52°
4
64°
49°
5
64°
47°
6
63°
48°
7
65°
48°
8
65°
50°
9
64°
50°
10
64°
51°
11
63°
51°
12
61°
50°
13
63°
51°
14
64°
49°
15
63°
51°
16
63°
50°
17
62°
49°
18
59°
50°
19
60°
50°
20
60°
49°
21
59°
50°
22
Hist. Avg.
58°
47°
23
Hist. Avg.
58°
47°
24
Hist. Avg.
58°
47°
25
Hist. Avg.
58°
47°
26
Hist. Avg.
57°
47°
27
Hist. Avg.
57°
47°
28
Hist. Avg.
57°
46°
29
Hist. Avg.
57°
46°
30
Hist. Avg.
57°
46°
1
Hist. Avg.
56°
46°
2
Hist. Avg.
56°
46°
3
Hist. Avg.
56°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Prestonpans
Prestonpans's September 2026 forecast shows daily high temperatures ranging from 59° to 67°, with overnight lows between 47° and 54°. The average high for September is 63° 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 Prestonpans. See also: October | November | December.