S
M
T
W
T
F
S
30
87°
69°
31
91°
69°
1
94°
74°
2
96°
75°
3
95°
76°
4
95°
72°
5
91°
72°
6
84°
66°
7
84°
65°
8
85°
64°
9
86°
71°
10
91°
73°
11
85°
70°
12
82°
70°
13
87°
72°
14
88°
68°
15
82°
64°
16
82°
65°
17
81°
68°
18
82°
67°
19
79°
66°
20
78°
69°
21
84°
70°
22
83°
69°
23
79°
69°
24
79°
68°
25
80°
68°
26
82°
69°
27
83°
68°
28
81°
68°
29
81°
67°
30
80°
67°
1
80°
66°
2
77°
67°
3
80°
66°
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 77° to 91°, with overnight lows between 64° and 73°. The average high for September is 82° with an average low of 68°. 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.