S
M
T
W
T
F
S
30
77°
64°
31
78°
63°
1
74°
57°
2
70°
56°
3
69°
56°
4
73°
54°
5
72°
55°
6
69°
52°
7
77°
57°
8
77°
58°
9
75°
57°
10
71°
56°
11
72°
55°
12
74°
56°
13
75°
56°
14
75°
55°
15
76°
56°
16
75°
54°
17
69°
54°
18
75°
55°
19
73°
55°
20
71°
54°
21
73°
55°
22
73°
56°
23
74°
54°
24
70°
50°
25
62°
46°
26
63°
47°
27
68°
50°
28
70°
51°
29
71°
52°
30
71°
52°
1
70°
51°
2
70°
51°
3
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alexandria Bay
Alexandria Bay's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 46° and 64°. The average high for September is 72° with an average low of 54°. 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 Alexandria Bay. See also: October | November | December.
