S
M
T
W
T
F
S
31
62°
49°
1
63°
49°
2
66°
53°
3
66°
50°
4
59°
48°
5
61°
49°
6
64°
48°
7
59°
48°
8
59°
50°
9
60°
50°
10
61°
50°
11
65°
51°
12
61°
53°
13
62°
51°
14
61°
53°
15
63°
53°
16
61°
49°
17
66°
51°
18
68°
53°
19
66°
50°
20
64°
48°
21
61°
48°
22
60°
47°
23
60°
47°
24
62°
48°
25
63°
48°
26
65°
51°
27
65°
51°
28
65°
47°
29
64°
48°
30
66°
50°
1
65°
54°
2
67°
53°
3
65°
47°
4
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in San Gregorio
San Gregorio's June 2026 forecast shows daily high temperatures ranging from 59° to 68°, with overnight lows between 47° and 54°. The average high for June is 63° with an average low of 50°. 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 San Gregorio. See also: July | August | September.