S
M
T
W
T
F
S
30
72°
57°
31
70°
57°
1
72°
46°
2
70°
60°
3
77°
66°
4
68°
54°
5
72°
50°
6
75°
57°
7
70°
61°
8
64°
55°
9
64°
52°
10
64°
46°
11
70°
48°
12
73°
45°
13
72°
63°
14
77°
63°
15
70°
55°
16
64°
50°
17
66°
55°
18
66°
52°
19
70°
61°
20
70°
52°
21
72°
50°
22
73°
52°
23
70°
52°
24
70°
45°
25
72°
54°
26
70°
45°
27
68°
48°
28
66°
43°
29
70°
46°
30
70°
57°
1
68°
46°
2
68°
54°
3
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Exeter
Exeter's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Exeter. See also: October | November | December.
