S
M
T
W
T
F
S
26
82°
57°
27
82°
57°
28
71°
61°
29
81°
64°
30
72°
58°
1
66°
51°
2
69°
43°
3
71°
45°
4
78°
52°
5
81°
62°
6
78°
54°
7
76°
49°
8
73°
51°
9
77°
58°
10
80°
57°
11
82°
60°
12
85°
58°
13
83°
59°
14
85°
58°
15
85°
63°
16
84°
62°
17
86°
62°
18
86°
63°
19
85°
62°
20
86°
64°
21
86°
64°
22
85°
63°
23
85°
64°
24
81°
64°
25
85°
63°
26
86°
65°
27
83°
65°
28
82°
64°
29
85°
64°
30
87°
65°
31
86°
64°
1
88°
66°
2
88°
66°
3
89°
67°
4
89°
67°
5
84°
66°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sulphur Spring
Sulphur Spring's May 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 43° and 67°. The average high for May is 82° with an average low of 60°. 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 Sulphur Spring. See also: June | July | August.