S
M
T
W
T
F
S
31
60°
41°
1
59°
42°
2
58°
42°
3
61°
43°
4
60°
44°
5
61°
48°
6
61°
48°
7
62°
46°
8
61°
46°
9
62°
47°
10
63°
47°
11
65°
53°
12
62°
46°
13
63°
49°
14
65°
53°
15
71°
54°
16
74°
55°
17
76°
54°
18
75°
55°
19
76°
56°
20
76°
57°
21
73°
58°
22
74°
58°
23
76°
50°
24
71°
49°
25
73°
56°
26
75°
59°
27
78°
59°
28
78°
60°
29
79°
59°
30
78°
52°
1
74°
48°
2
70°
59°
3
73°
61°
4
78°
61°
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 58° to 79°, with overnight lows between 41° and 61°. 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.