S
M
T
W
T
F
S
30
78°
53°
31
74°
50°
1
71°
53°
2
72°
51°
3
72°
52°
4
73°
51°
5
70°
52°
6
71°
57°
7
70°
54°
8
71°
52°
9
71°
50°
10
72°
50°
11
69°
51°
12
70°
52°
13
69°
51°
14
70°
48°
15
71°
54°
16
75°
48°
17
74°
50°
18
74°
48°
19
67°
51°
20
75°
52°
21
65°
43°
22
65°
42°
23
Hist. Avg.
69°
48°
24
Hist. Avg.
69°
47°
25
Hist. Avg.
68°
47°
26
Hist. Avg.
68°
46°
27
Hist. Avg.
67°
46°
28
Hist. Avg.
67°
46°
29
Hist. Avg.
66°
45°
30
Hist. Avg.
66°
45°
1
Hist. Avg.
66°
44°
2
Hist. Avg.
65°
44°
3
Hist. Avg.
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ionia
Ionia's September 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 42° and 57°. The average high for September is 71° with an average low of 51°. 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 Ionia. See also: October | November | December.
