S
M
T
W
T
F
S
28
90°
83°
29
90°
83°
30
90°
82°
1
90°
82°
2
90°
80°
3
90°
81°
4
91°
81°
5
91°
81°
6
92°
80°
7
91°
82°
8
92°
82°
9
92°
82°
10
92°
82°
11
91°
81°
12
92°
78°
13
85°
74°
14
83°
73°
15
86°
82°
16
90°
82°
17
90°
83°
18
91°
80°
19
92°
81°
20
91°
80°
21
90°
81°
22
92°
80°
23
91°
79°
24
92°
81°
25
91°
82°
26
92°
80°
27
91°
82°
28
96°
83°
29
93°
82°
30
92°
83°
31
93°
83°
1
93°
83°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Galveston
Galveston's July 2026 forecast shows daily high temperatures ranging from 86° to 96°, with overnight lows between 79° and 83°. The average high for July is 91° with an average low of 82°. 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 Galveston. See also: August | September | October.