S
M
T
W
T
F
S
30
74°
52°
31
71°
50°
1
68°
52°
2
69°
50°
3
69°
51°
4
70°
51°
5
68°
52°
6
68°
55°
7
69°
56°
8
70°
53°
9
68°
50°
10
68°
50°
11
67°
51°
12
67°
53°
13
66°
52°
14
67°
50°
15
66°
55°
16
70°
47°
17
69°
48°
18
69°
48°
19
65°
54°
20
72°
53°
21
63°
45°
22
Hist. Avg.
67°
47°
23
Hist. Avg.
66°
47°
24
Hist. Avg.
66°
46°
25
Hist. Avg.
66°
46°
26
Hist. Avg.
65°
46°
27
Hist. Avg.
65°
45°
28
Hist. Avg.
64°
45°
29
Hist. Avg.
64°
45°
30
Hist. Avg.
64°
44°
1
Hist. Avg.
63°
44°
2
Hist. Avg.
63°
44°
3
Hist. Avg.
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Exeter
Exeter's September 2026 forecast shows daily high temperatures ranging from 63° to 74°, with overnight lows between 45° and 56°. The average high for September is 68° 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 Exeter. See also: October | November | December.
