S
M
T
W
T
F
S
30
66°
55°
31
66°
54°
1
68°
54°
2
66°
59°
3
72°
62°
4
67°
51°
5
68°
52°
6
78°
58°
7
69°
53°
8
65°
50°
9
66°
51°
10
64°
53°
11
67°
53°
12
67°
51°
13
66°
54°
14
67°
53°
15
68°
54°
16
62°
47°
17
63°
50°
18
64°
48°
19
64°
52°
20
66°
53°
21
67°
53°
22
67°
52°
23
66°
52°
24
63°
51°
25
66°
52°
26
65°
52°
27
65°
49°
28
64°
51°
29
64°
52°
30
65°
50°
1
59°
47°
2
58°
46°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bath
Bath's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 44° and 62°. The average high for September is 66° with an average low of 51°. 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 Bath. See also: October | November | December.