S
M
T
W
T
F
S
28
85°
69°
29
90°
64°
30
89°
71°
1
98°
75°
2
101°
81°
3
101°
80°
4
100°
74°
5
91°
71°
6
75°
68°
7
74°
66°
8
82°
67°
9
84°
71°
10
88°
70°
11
85°
67°
12
80°
65°
13
81°
64°
14
82°
63°
15
84°
65°
16
86°
67°
17
88°
66°
18
83°
67°
19
87°
69°
20
82°
63°
21
80°
63°
22
81°
64°
23
82°
64°
24
84°
65°
25
84°
66°
26
86°
67°
27
85°
69°
28
87°
70°
29
87°
70°
30
86°
69°
31
86°
70°
1
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Southampton
Southampton's July 2026 forecast shows daily high temperatures ranging from 74° to 100°, with overnight lows between 63° and 74°. The average high for July is 84° with an average low of 67°. 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 Southampton. See also: August | September | October.
