S
M
T
W
T
F
S
26
82°
68°
27
82°
72°
28
86°
70°
29
79°
63°
30
63°
55°
1
55°
50°
2
70°
46°
3
75°
45°
4
81°
65°
5
85°
73°
6
86°
62°
7
66°
57°
8
78°
61°
9
83°
64°
10
87°
62°
11
78°
54°
12
83°
56°
13
88°
66°
14
88°
61°
15
86°
63°
16
88°
65°
17
84°
61°
18
79°
65°
19
80°
65°
20
82°
64°
21
83°
61°
22
81°
59°
23
80°
59°
24
82°
61°
25
80°
61°
26
81°
60°
27
82°
60°
28
82°
61°
29
83°
66°
30
82°
67°
31
81°
68°
1
84°
67°
2
85°
66°
3
86°
68°
4
89°
69°
5
85°
69°
6
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Augustine
San Augustine's May 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 54° and 73°. The average high for May is 83° with an average low of 63°. 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 San Augustine. See also: June | July | August.
