S
M
T
W
T
F
S
30
78°
62°
31
79°
63°
1
79°
63°
2
81°
55°
3
78°
54°
4
75°
55°
5
76°
55°
6
77°
57°
7
82°
59°
8
84°
63°
9
84°
59°
10
80°
55°
11
76°
62°
12
77°
59°
13
81°
53°
14
75°
52°
15
73°
50°
16
74°
53°
17
76°
59°
18
80°
49°
19
74°
56°
20
75°
51°
21
78°
56°
22
74°
58°
23
80°
58°
24
78°
57°
25
78°
58°
26
79°
57°
27
80°
57°
28
80°
56°
29
79°
56°
30
78°
55°
1
79°
53°
2
79°
47°
3
76°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Peoria
North Peoria's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 45° and 63°. The average high for September is 78° with an average low of 56°. 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 North Peoria. See also: October | November | December.
