S
M
T
W
T
F
S
30
85°
59°
31
76°
70°
1
90°
72°
2
73°
69°
3
89°
76°
4
88°
74°
5
81°
66°
6
76°
62°
7
82°
59°
8
83°
56°
9
87°
66°
10
90°
73°
11
82°
62°
12
78°
57°
13
85°
76°
14
77°
57°
15
70°
55°
16
81°
56°
17
83°
66°
18
84°
68°
19
69°
65°
20
73°
65°
21
68°
62°
22
66°
59°
23
68°
56°
24
66°
56°
25
72°
59°
26
69°
57°
27
70°
57°
28
72°
58°
29
72°
57°
30
73°
56°
1
75°
59°
2
72°
52°
3
67°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Loch Arbour
Loch Arbour's September 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 52° and 59°. The average high for September is 70° with an average low of 57°. 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 Loch Arbour. See also: October | November | December.