S
M
T
W
T
F
S
28
75°
59°
29
80°
64°
30
82°
62°
1
81°
60°
2
77°
59°
3
77°
62°
4
78°
62°
5
78°
61°
6
80°
60°
7
77°
60°
8
78°
61°
9
76°
60°
10
76°
61°
11
78°
61°
12
81°
65°
13
82°
64°
14
80°
67°
15
79°
65°
16
79°
63°
17
80°
63°
18
81°
64°
19
82°
62°
20
82°
65°
21
80°
63°
22
78°
64°
23
79°
64°
24
78°
62°
25
78°
65°
26
82°
69°
27
84°
69°
28
84°
68°
29
82°
67°
30
80°
65°
31
79°
66°
1
78°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in West Yarmouth
West Yarmouth's July 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 59° and 69°. The average high for July is 79° with an average low of 63°. 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 West Yarmouth. See also: August | September | October.