S
M
T
W
T
F
S
30
79°
63°
31
80°
55°
1
79°
53°
2
74°
54°
3
73°
59°
4
76°
63°
5
81°
54°
6
80°
53°
7
72°
52°
8
73°
59°
9
74°
59°
10
75°
57°
11
72°
58°
12
70°
57°
13
70°
51°
14
69°
49°
15
68°
50°
16
69°
54°
17
68°
57°
18
75°
57°
19
77°
58°
20
76°
56°
21
75°
53°
22
71°
55°
23
68°
48°
24
67°
47°
25
64°
47°
26
65°
46°
27
Hist. Avg.
70°
50°
28
Hist. Avg.
69°
49°
29
Hist. Avg.
69°
49°
30
Hist. Avg.
68°
48°
1
Hist. Avg.
68°
48°
2
Hist. Avg.
67°
48°
3
Hist. Avg.
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Zion
Zion's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 46° and 63°. The average high for September is 73° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Zion. See also: October | November | December.