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Zion, IL

62°F
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Zion

Illinois

62°
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Zion, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities
Heat Advisory

September

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
30
Sunshine
79°
63°
31
Partly sunny
80°
55°
1
Mainly cloudy with t-storms
79°
53°
2
Mostly sunny and less humid
74°
54°
3
Plenty of sun
73°
59°
4
Mostly sunny
76°
63°
5
Humid with some sun
81°
54°
6
Some sun, a t-storm or two
80°
53°
7
Partly sunny and less humid
72°
52°
8
Plenty of sunshine
73°
59°
9
Plenty of sunshine
74°
59°
10
Couple of thunderstorms
75°
57°
11
Mostly cloudy
72°
58°
12
Rain
70°
57°
13
Cloudy
70°
51°
14
Cloudy most of the time
69°
49°
15
Times of clouds and sun
68°
50°
16
Times of clouds and sun
69°
54°
17
Mostly cloudy
68°
57°
18
Wall-to-wall sunshine
75°
57°
19
Mostly sunny and warm
77°
58°
20
Showers around in the p.m.
76°
56°
21
Times of clouds and sun
75°
53°
22
More sunshine than clouds
71°
55°
23
Occasional rain
68°
48°
24
Rain
67°
47°
25
Mostly cloudy
64°
47°
26
Times of clouds and sun
66°
47°
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
90° 80° 70° 60° 50° Sep
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 *27 *28 *29 *30
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 47° 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.

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