S
M
T
W
T
F
S
28
69°
52°
29
66°
49°
30
69°
50°
1
68°
55°
2
69°
59°
3
78°
60°
4
78°
57°
5
76°
55°
6
70°
55°
7
67°
57°
8
69°
56°
9
70°
57°
10
74°
58°
11
72°
56°
12
72°
57°
13
71°
57°
14
72°
56°
15
73°
58°
16
72°
59°
17
68°
58°
18
68°
57°
19
69°
57°
20
68°
58°
21
67°
58°
22
67°
57°
23
69°
59°
24
70°
59°
25
69°
58°
26
70°
59°
27
70°
59°
28
69°
58°
29
70°
59°
30
71°
60°
31
72°
60°
1
71°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Yarmouth
Yarmouth's July 2026 forecast shows daily high temperatures ranging from 67° to 78°, with overnight lows between 55° and 60°. The average high for July is 71° 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 July weather will actually feel in Yarmouth. See also: August | September | October.