S
M
T
W
T
F
S
26
95°
66°
27
92°
63°
28
94°
63°
29
94°
62°
30
95°
64°
31
97°
67°
1
99°
67°
2
100°
68°
3
100°
68°
4
101°
65°
5
101°
61°
6
99°
60°
7
95°
60°
8
93°
61°
9
94°
60°
10
93°
63°
11
96°
64°
12
98°
62°
13
98°
63°
14
97°
65°
15
96°
67°
16
92°
59°
17
90°
58°
18
90°
58°
19
91°
57°
20
90°
58°
21
90°
62°
22
93°
61°
23
95°
63°
24
94°
62°
25
93°
61°
26
93°
61°
27
92°
62°
28
94°
63°
29
96°
62°
30
95°
64°
31
96°
65°
1
96°
60°
2
94°
57°
3
Hist. Avg.
91°
62°
4
Hist. Avg.
91°
62°
5
Hist. Avg.
91°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Exeter
Exeter's August 2026 forecast shows daily high temperatures ranging from 90° to 101°, with overnight lows between 57° and 68°. The average high for August is 95° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Exeter. See also: September | October | November.