S
M
T
W
T
F
S
31
68°
50°
1
69°
48°
2
64°
48°
3
67°
51°
4
70°
52°
5
70°
53°
6
67°
52°
7
62°
50°
8
63°
50°
9
65°
54°
10
69°
55°
11
72°
54°
12
68°
51°
13
64°
49°
14
64°
50°
15
65°
50°
16
64°
48°
17
66°
55°
18
67°
52°
19
71°
50°
20
73°
52°
21
75°
50°
22
76°
55°
23
75°
50°
24
70°
51°
25
68°
52°
26
68°
54°
27
69°
58°
28
73°
50°
29
73°
56°
30
77°
51°
1
71°
50°
2
69°
52°
3
72°
54°
4
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Seguin
Seguin's June 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 48° and 58°. The average high for June is 69° with an average low of 52°. 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 Seguin. See also: July | August | September.