S
M
T
W
T
F
S
26
55°
39°
27
68°
43°
28
64°
50°
29
54°
35°
30
49°
31°
1
46°
29°
2
52°
27°
3
68°
39°
4
80°
45°
5
60°
44°
6
57°
31°
7
54°
32°
8
62°
31°
9
73°
40°
10
58°
32°
11
51°
32°
12
71°
50°
13
59°
41°
14
59°
49°
15
74°
57°
16
75°
54°
17
73°
62°
18
76°
59°
19
67°
46°
20
59°
47°
21
67°
50°
22
67°
53°
23
70°
55°
24
70°
54°
25
69°
49°
26
74°
56°
27
74°
56°
28
75°
55°
29
74°
56°
30
73°
55°
31
68°
50°
1
66°
50°
2
66°
55°
3
74°
57°
4
74°
56°
5
73°
56°
6
72°
54°
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 59° to 76°, with overnight lows between 41° and 62°. The average high for May is 70° with an average low of 53°. 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.