S
M
T
W
T
F
S
28
75°
64°
29
77°
62°
30
75°
62°
1
78°
62°
2
84°
60°
3
91°
59°
4
93°
64°
5
90°
67°
6
93°
66°
7
96°
66°
8
98°
66°
9
96°
67°
10
92°
65°
11
94°
65°
12
90°
69°
13
91°
72°
14
99°
70°
15
103°
72°
16
104°
71°
17
97°
69°
18
96°
68°
19
95°
68°
20
94°
68°
21
97°
69°
22
98°
72°
23
97°
69°
24
95°
70°
25
96°
69°
26
97°
69°
27
98°
67°
28
97°
65°
29
96°
66°
30
94°
63°
31
92°
65°
1
93°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grand Terrace
Grand Terrace's July 2026 forecast shows daily high temperatures ranging from 92° to 104°, with overnight lows between 63° and 72°. The average high for July is 96° with an average low of 68°. 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 Grand Terrace. See also: August | September | October.