S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
64°
57°
2
72°
45°
3
72°
46°
4
79°
53°
5
83°
61°
6
80°
57°
7
73°
47°
8
74°
47°
9
78°
55°
10
80°
59°
11
80°
60°
12
83°
59°
13
80°
59°
14
82°
58°
15
84°
63°
16
84°
63°
17
85°
62°
18
85°
63°
19
84°
64°
20
86°
64°
21
86°
63°
22
85°
64°
23
82°
64°
24
81°
65°
25
84°
65°
26
83°
64°
27
80°
65°
28
82°
61°
29
85°
64°
30
86°
63°
31
85°
64°
1
85°
66°
2
88°
67°
3
88°
67°
4
89°
66°
5
83°
65°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Zion
Zion's May 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 45° and 67°. The average high for May is 82° with an average low of 61°. 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 Zion. See also: June | July | August.