S
M
T
W
T
F
S
26
57°
34°
27
57°
28°
28
61°
28°
29
70°
27°
30
72°
28°
1
73°
28°
2
73°
37°
3
68°
41°
4
59°
37°
5
66°
43°
6
77°
37°
7
79°
39°
8
81°
34°
9
81°
37°
10
88°
36°
11
88°
43°
12
88°
43°
13
74°
47°
14
81°
34°
15
79°
36°
16
72°
41°
17
54°
30°
18
63°
25°
19
70°
23°
20
77°
28°
21
79°
39°
22
79°
41°
23
82°
37°
24
82°
45°
25
81°
41°
26
61°
30°
27
54°
30°
28
61°
43°
29
65°
44°
30
73°
45°
31
79°
45°
1
87°
50°
2
87°
53°
3
90°
54°
4
89°
52°
5
91°
55°
6
88°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mason
Mason's May 2026 forecast shows daily high temperatures ranging from 61° to 91°, with overnight lows between 43° and 55°. The average high for May is 81° with an average low of 49°. 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 Mason. See also: June | July | August.
