S
M
T
W
T
F
S
26
83°
63°
27
85°
62°
28
85°
61°
29
78°
59°
30
78°
61°
31
80°
62°
1
83°
66°
2
83°
67°
3
85°
67°
4
85°
65°
5
81°
61°
6
84°
66°
7
86°
67°
8
84°
66°
9
85°
65°
10
78°
62°
11
80°
63°
12
83°
65°
13
83°
65°
14
78°
58°
15
76°
57°
16
77°
58°
17
77°
62°
18
82°
64°
19
82°
62°
20
84°
65°
21
84°
63°
22
78°
60°
23
82°
63°
24
79°
58°
25
81°
63°
26
84°
62°
27
85°
59°
28
81°
56°
29
76°
55°
30
76°
56°
31
77°
62°
1
76°
63°
2
79°
62°
3
77°
54°
4
76°
53°
5
74°
54°
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 53° and 67°. The average high for August is 81° with an average low of 61°. 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.
