S
M
T
W
T
F
S
30
57°
48°
31
57°
48°
1
59°
47°
2
57°
48°
3
57°
46°
4
56°
47°
5
57°
47°
6
57°
46°
7
56°
47°
8
57°
47°
9
57°
46°
10
56°
46°
11
57°
47°
12
57°
40°
13
56°
46°
14
57°
45°
15
56°
45°
16
56°
44°
17
55°
44°
18
55°
43°
19
54°
44°
20
53°
43°
21
55°
44°
22
54°
43°
23
54°
42°
24
52°
41°
25
53°
41°
26
49°
41°
27
52°
42°
28
53°
42°
29
53°
42°
30
Hist. Avg.
49°
40°
1
Hist. Avg.
49°
39°
2
Hist. Avg.
49°
39°
3
Hist. Avg.
48°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Herendeen Bay
Herendeen Bay's September 2026 forecast shows daily high temperatures ranging from 49° to 59°, with overnight lows between 40° and 48°. The average high for September is 55° with an average low of 45°. 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 Herendeen Bay. See also: October | November | December.