S
M
T
W
T
F
S
26
59°
33°
27
78°
37°
28
62°
43°
29
48°
39°
30
51°
36°
1
44°
36°
2
44°
32°
3
52°
30°
4
70°
42°
5
51°
36°
6
43°
37°
7
44°
33°
8
48°
38°
9
58°
37°
10
48°
34°
11
48°
34°
12
48°
37°
13
51°
39°
14
56°
43°
15
58°
44°
16
56°
44°
17
61°
43°
18
61°
45°
19
59°
45°
20
62°
42°
21
56°
39°
22
56°
39°
23
57°
41°
24
60°
42°
25
62°
46°
26
62°
44°
27
58°
44°
28
63°
45°
29
62°
45°
30
65°
48°
31
68°
50°
1
69°
48°
2
64°
48°
3
67°
51°
4
70°
52°
5
70°
53°
6
67°
52°
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 44° to 70°, with overnight lows between 33° and 53°. The average high for May is 59° with an average low of 43°. 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.
