S
M
T
W
T
F
S
30
73°
47°
31
72°
47°
1
73°
51°
2
74°
56°
3
74°
56°
4
81°
57°
5
81°
55°
6
80°
47°
7
76°
47°
8
73°
46°
9
73°
45°
10
71°
46°
11
71°
47°
12
70°
45°
13
75°
50°
14
76°
52°
15
76°
51°
16
69°
48°
17
70°
49°
18
71°
50°
19
73°
42°
20
70°
44°
21
71°
42°
22
74°
40°
23
67°
40°
24
67°
41°
25
68°
45°
26
67°
40°
27
66°
44°
28
66°
44°
29
64°
38°
30
65°
39°
1
64°
44°
2
70°
40°
3
68°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Chester
North Chester's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 38° and 57°. The average high for September is 71° with an average low of 46°. 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 Chester. See also: October | November | December.