S
M
T
W
T
F
S
26
80°
60°
27
85°
65°
28
81°
63°
29
78°
58°
30
82°
59°
31
87°
62°
1
80°
67°
2
81°
66°
3
77°
58°
4
82°
53°
5
85°
61°
6
85°
64°
7
84°
68°
8
86°
65°
9
84°
61°
10
83°
68°
11
76°
63°
12
79°
67°
13
82°
66°
14
82°
65°
15
81°
71°
16
86°
67°
17
77°
61°
18
78°
61°
19
79°
60°
20
79°
63°
21
80°
64°
22
80°
62°
23
76°
60°
24
75°
59°
25
74°
60°
26
80°
62°
27
80°
63°
28
74°
55°
29
75°
58°
30
77°
61°
31
80°
62°
1
82°
63°
2
82°
62°
3
81°
61°
4
81°
61°
5
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Plymouth
Plymouth's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 55° and 71°. The average high for August is 79° 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 Plymouth. See also: September | October | November.
