S
M
T
W
T
F
S
30
66°
53°
31
64°
53°
1
63°
52°
2
61°
49°
3
60°
49°
4
61°
50°
5
61°
52°
6
63°
54°
7
64°
53°
8
64°
52°
9
63°
53°
10
64°
52°
11
64°
52°
12
59°
51°
13
60°
49°
14
61°
47°
15
59°
47°
16
59°
49°
17
60°
47°
18
60°
46°
19
59°
46°
20
58°
47°
21
58°
46°
22
59°
52°
23
62°
50°
24
63°
48°
25
59°
45°
26
59°
45°
27
58°
47°
28
57°
46°
29
59°
45°
30
60°
44°
1
56°
43°
2
56°
42°
3
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Haddington
Haddington's September 2026 forecast shows daily high temperatures ranging from 56° to 66°, with overnight lows between 42° and 54°. The average high for September is 60° 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 Haddington. See also: October | November | December.
