S
M
T
W
T
F
S
28
84°
54°
29
85°
51°
30
86°
52°
1
93°
68°
2
93°
70°
3
91°
67°
4
85°
60°
5
84°
52°
6
80°
58°
7
74°
57°
8
85°
54°
9
90°
56°
10
82°
57°
11
81°
51°
12
82°
48°
13
87°
54°
14
96°
71°
15
87°
56°
16
85°
54°
17
79°
50°
18
80°
59°
19
78°
56°
20
80°
57°
21
81°
56°
22
79°
58°
23
80°
58°
24
81°
60°
25
79°
59°
26
78°
57°
27
79°
54°
28
77°
57°
29
76°
54°
30
75°
52°
31
76°
56°
1
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Plymouth
Plymouth's July 2026 forecast shows daily high temperatures ranging from 75° to 96°, with overnight lows between 50° and 71°. The average high for July is 80° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Plymouth. See also: August | September | October.