S
M
T
W
T
F
S
26
75°
60°
27
76°
57°
28
74°
60°
29
70°
58°
30
71°
59°
31
74°
61°
1
74°
62°
2
77°
62°
3
76°
61°
4
78°
61°
5
71°
59°
6
71°
61°
7
77°
61°
8
72°
60°
9
73°
61°
10
73°
58°
11
70°
55°
12
73°
61°
13
76°
61°
14
73°
56°
15
69°
55°
16
70°
60°
17
71°
60°
18
75°
61°
19
71°
61°
20
74°
60°
21
76°
60°
22
69°
57°
23
70°
60°
24
74°
59°
25
75°
59°
26
77°
52°
27
73°
51°
28
67°
50°
29
65°
51°
30
68°
52°
31
70°
58°
1
73°
59°
2
71°
60°
3
73°
58°
4
74°
49°
5
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tiverton
Tiverton's August 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 49° and 62°. The average high for August is 73° with an average low of 58°. 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 Tiverton. See also: September | October | November.