S
M
T
W
T
F
S
28
64°
56°
29
63°
54°
30
65°
56°
1
62°
57°
2
61°
56°
3
68°
55°
4
63°
58°
5
64°
57°
6
66°
58°
7
67°
58°
8
71°
55°
9
69°
58°
10
66°
56°
11
65°
56°
12
72°
58°
13
71°
56°
14
71°
55°
15
69°
56°
16
69°
56°
17
68°
55°
18
68°
54°
19
66°
53°
20
65°
54°
21
64°
53°
22
64°
56°
23
65°
55°
24
66°
56°
25
66°
56°
26
65°
55°
27
66°
56°
28
63°
56°
29
65°
55°
30
67°
57°
31
68°
56°
1
67°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Portstewart
Portstewart's July 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 53° and 58°. The average high for July is 67° with an average low of 56°. 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 Portstewart. See also: August | September | October.
