S
M
T
W
T
F
S
30
80°
48°
31
71°
48°
1
71°
54°
2
76°
55°
3
70°
48°
4
70°
55°
5
72°
50°
6
74°
48°
7
71°
47°
8
70°
46°
9
69°
46°
10
68°
49°
11
68°
44°
12
67°
46°
13
68°
45°
14
70°
51°
15
73°
44°
16
66°
42°
17
65°
42°
18
63°
41°
19
63°
42°
20
64°
43°
21
64°
44°
22
63°
42°
23
64°
48°
24
69°
48°
25
70°
47°
26
69°
48°
27
70°
41°
28
67°
38°
29
60°
38°
30
62°
46°
1
61°
48°
2
64°
46°
3
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bolton
Bolton's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 38° and 55°. The average high for September is 68° with an average low of 46°. 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 Bolton. See also: October | November | December.