S
M
T
W
T
F
S
26
62°
43°
27
71°
39°
28
72°
49°
29
56°
47°
30
53°
38°
1
45°
38°
2
43°
35°
3
60°
31°
4
72°
46°
5
70°
48°
6
56°
42°
7
57°
36°
8
57°
43°
9
69°
50°
10
60°
43°
11
62°
36°
12
66°
36°
13
66°
43°
14
60°
39°
15
69°
35°
16
72°
52°
17
83°
59°
18
87°
62°
19
88°
65°
20
67°
49°
21
67°
47°
22
61°
48°
23
75°
55°
24
68°
58°
25
74°
52°
26
78°
61°
27
79°
52°
28
69°
46°
29
74°
45°
30
67°
48°
31
68°
48°
1
72°
49°
2
70°
53°
3
73°
52°
4
77°
57°
5
76°
56°
6
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Smithville
Smithville's May 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 45° and 61°. The average high for May is 73° with an average low of 52°. 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 Smithville. See also: June | July | August.
