S
M
T
W
T
F
S
30
73°
58°
31
80°
58°
1
80°
57°
2
81°
54°
3
79°
51°
4
78°
55°
5
78°
51°
6
77°
51°
7
71°
55°
8
70°
54°
9
76°
48°
10
70°
47°
11
69°
54°
12
77°
47°
13
73°
53°
14
75°
52°
15
72°
55°
16
68°
47°
17
73°
46°
18
67°
45°
19
Hist. Avg.
70°
48°
20
Hist. Avg.
70°
47°
21
Hist. Avg.
69°
47°
22
Hist. Avg.
69°
47°
23
Hist. Avg.
68°
46°
24
Hist. Avg.
68°
46°
25
Hist. Avg.
67°
46°
26
Hist. Avg.
67°
46°
27
Hist. Avg.
66°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
66°
44°
30
Hist. Avg.
65°
44°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
64°
44°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sackets Harbor
Sackets Harbor's September 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 45° and 58°. The average high for September is 74° with an average low of 52°. 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 Sackets Harbor. See also: October | November | December.
