S
M
T
W
T
F
S
30
70°
60°
31
77°
61°
1
78°
59°
2
78°
57°
3
76°
52°
4
76°
51°
5
75°
58°
6
75°
57°
7
74°
53°
8
Hist. Avg.
74°
52°
9
Hist. Avg.
74°
52°
10
Hist. Avg.
73°
51°
11
Hist. Avg.
73°
51°
12
Hist. Avg.
72°
50°
13
Hist. Avg.
72°
50°
14
Hist. Avg.
72°
50°
15
Hist. Avg.
71°
50°
16
Hist. Avg.
71°
49°
17
Hist. Avg.
70°
49°
18
Hist. Avg.
70°
48°
19
Hist. Avg.
70°
48°
20
Hist. Avg.
69°
48°
21
Hist. Avg.
69°
47°
22
Hist. Avg.
68°
47°
23
Hist. Avg.
68°
46°
24
Hist. Avg.
68°
46°
25
Hist. Avg.
67°
46°
26
Hist. Avg.
67°
45°
27
Hist. Avg.
66°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
66°
44°
30
Hist. Avg.
65°
44°
1
Hist. Avg.
65°
43°
2
Hist. Avg.
64°
43°
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 Boothbay
Boothbay's September 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 51° and 61°. The average high for September is 75° with an average low of 56°. 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 Boothbay. See also: October | November | December.