S
M
T
W
T
F
S
26
88°
72°
27
93°
71°
28
90°
70°
29
91°
71°
30
92°
64°
1
82°
61°
2
81°
67°
3
83°
68°
4
85°
68°
5
84°
64°
6
83°
67°
7
84°
64°
8
79°
62°
9
79°
63°
10
80°
67°
11
83°
69°
12
86°
68°
13
83°
68°
14
82°
67°
15
83°
64°
16
82°
63°
17
81°
64°
18
83°
70°
19
87°
69°
20
81°
64°
21
82°
63°
22
83°
67°
23
85°
71°
24
90°
70°
25
90°
68°
26
87°
69°
27
84°
68°
28
85°
65°
29
86°
69°
30
90°
67°
31
87°
68°
1
86°
69°
2
87°
70°
3
87°
71°
4
88°
70°
5
92°
68°
6
95°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seguin
Seguin's May 2026 forecast shows daily high temperatures ranging from 79° to 95°, with overnight lows between 61° and 72°. The average high for May is 85° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Seguin. See also: June | July | August.
