S
M
T
W
T
F
S
26
64°
49°
27
70°
46°
28
76°
44°
29
82°
46°
30
85°
48°
1
88°
51°
2
87°
53°
3
76°
53°
4
63°
54°
5
70°
51°
6
78°
48°
7
88°
54°
8
88°
52°
9
90°
50°
10
93°
55°
11
98°
57°
12
97°
59°
13
84°
53°
14
86°
52°
15
91°
53°
16
84°
54°
17
82°
50°
18
87°
53°
19
92°
58°
20
95°
60°
21
96°
58°
22
92°
56°
23
86°
56°
24
88°
54°
25
88°
55°
26
85°
56°
27
86°
54°
28
80°
51°
29
80°
50°
30
84°
53°
31
88°
57°
1
90°
59°
2
91°
60°
3
91°
59°
4
83°
52°
5
84°
56°
6
90°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sierra Vista
Sierra Vista's May 2026 forecast shows daily high temperatures ranging from 80° to 96°, with overnight lows between 50° and 60°. The average high for May is 87° with an average low of 55°. 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 Sierra Vista. See also: June | July | August.
