S
M
T
W
T
F
S
31
89°
68°
1
91°
70°
2
94°
70°
3
88°
70°
4
87°
72°
5
84°
72°
6
92°
73°
7
92°
77°
8
89°
74°
9
92°
75°
10
92°
75°
11
94°
77°
12
92°
77°
13
92°
75°
14
90°
76°
15
85°
70°
16
88°
74°
17
92°
73°
18
97°
74°
19
90°
78°
20
88°
77°
21
95°
78°
22
96°
79°
23
96°
76°
24
96°
75°
25
96°
74°
26
96°
75°
27
95°
78°
28
97°
75°
29
96°
76°
30
97°
75°
1
98°
75°
2
94°
73°
3
95°
75°
4
96°
74°
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 88° to 98°, with overnight lows between 73° and 79°. The average high for June is 95° with an average low of 76°. 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.