S
M
T
W
T
F
S
30
81°
65°
31
83°
68°
1
90°
69°
2
91°
73°
3
86°
68°
4
77°
67°
5
79°
59°
6
77°
54°
7
78°
52°
8
81°
56°
9
75°
68°
10
78°
56°
11
77°
49°
12
84°
62°
13
74°
51°
14
70°
44°
15
77°
58°
16
69°
63°
17
65°
60°
18
72°
52°
19
62°
55°
20
63°
54°
21
61°
47°
22
66°
43°
23
68°
48°
24
70°
45°
25
66°
41°
26
70°
40°
27
74°
43°
28
74°
46°
29
76°
48°
30
65°
59°
1
71°
60°
2
65°
42°
3
64°
45°
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 64° to 65°, with overnight lows between 42° and 45°. The average high for September is 65° with an average low of 44°. 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.