S
M
T
W
T
F
S
31
86°
46°
1
90°
50°
2
84°
52°
3
84°
52°
4
86°
52°
5
91°
52°
6
77°
50°
7
81°
48°
8
77°
50°
9
81°
59°
10
97°
58°
11
90°
55°
12
86°
54°
13
81°
55°
14
79°
56°
15
82°
55°
16
84°
54°
17
83°
57°
18
78°
54°
19
78°
50°
20
80°
54°
21
83°
53°
22
82°
53°
23
83°
52°
24
80°
53°
25
81°
54°
26
80°
51°
27
80°
51°
28
81°
52°
29
81°
52°
30
84°
55°
1
84°
56°
2
82°
53°
3
81°
57°
4
86°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Old Gilroy
Old Gilroy's June 2026 forecast shows daily high temperatures ranging from 78° to 97°, with overnight lows between 50° and 58°. The average high for June is 83° with an average low of 54°. 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 Old Gilroy. See also: July | August | September.