S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
71°
45°
3
74°
48°
4
79°
53°
5
80°
61°
6
80°
57°
7
73°
47°
8
74°
47°
9
78°
55°
10
80°
59°
11
80°
56°
12
81°
56°
13
83°
59°
14
81°
59°
15
84°
58°
16
79°
61°
17
80°
62°
18
79°
62°
19
80°
63°
20
79°
64°
21
80°
59°
22
80°
57°
23
78°
56°
24
79°
58°
25
80°
59°
26
80°
57°
27
79°
57°
28
80°
59°
29
82°
63°
30
83°
65°
31
82°
66°
1
82°
66°
2
83°
65°
3
83°
65°
4
84°
67°
5
83°
67°
6
84°
68°
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 71° to 84°, with overnight lows between 45° and 68°. The average high for May is 80° with an average low of 59°. 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.