S
M
T
W
T
F
S
31
88°
58°
1
90°
58°
2
86°
58°
3
90°
60°
4
93°
60°
5
89°
59°
6
85°
59°
7
83°
57°
8
84°
59°
9
90°
62°
10
93°
61°
11
93°
63°
12
92°
62°
13
93°
63°
14
89°
58°
15
90°
62°
16
91°
63°
17
91°
63°
18
92°
62°
19
91°
63°
20
91°
62°
21
92°
63°
22
92°
63°
23
91°
62°
24
92°
63°
25
92°
63°
26
91°
62°
27
92°
62°
28
90°
59°
29
89°
60°
30
92°
62°
1
93°
62°
2
94°
65°
3
94°
65°
4
93°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grand Terrace
Grand Terrace's June 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 57° and 65°. The average high for June is 91° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Grand Terrace. See also: July | August | September.