S
M
T
W
T
F
S
28
66°
59°
29
64°
59°
30
66°
59°
1
64°
59°
2
68°
54°
3
66°
52°
4
68°
59°
5
70°
54°
6
75°
54°
7
81°
57°
8
79°
55°
9
79°
57°
10
82°
63°
11
82°
64°
12
81°
66°
13
77°
66°
14
75°
64°
15
74°
62°
16
78°
60°
17
78°
60°
18
75°
60°
19
74°
59°
20
74°
58°
21
74°
60°
22
73°
59°
23
72°
60°
24
72°
60°
25
73°
59°
26
70°
58°
27
69°
59°
28
64°
61°
29
67°
62°
30
66°
61°
31
66°
62°
1
67°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Porthtowan
Porthtowan's July 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 58° and 62°. The average high for July is 71° with an average low of 60°. 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 Porthtowan. See also: August | September | October.
