S
M
T
W
T
F
S
30
72°
59°
31
75°
52°
1
72°
46°
2
66°
57°
3
79°
64°
4
68°
54°
5
72°
48°
6
81°
54°
7
73°
59°
8
64°
55°
9
64°
52°
10
68°
46°
11
70°
54°
12
73°
48°
13
70°
63°
14
74°
62°
15
70°
50°
16
66°
53°
17
68°
46°
18
65°
59°
19
70°
52°
20
69°
53°
21
73°
54°
22
72°
53°
23
72°
53°
24
69°
51°
25
70°
51°
26
69°
49°
27
64°
49°
28
65°
50°
29
65°
49°
30
64°
47°
1
64°
45°
2
63°
49°
3
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Reading
Reading's September 2026 forecast shows daily high temperatures ranging from 63° to 74°, with overnight lows between 45° and 62°. The average high for September is 68° 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 Reading. See also: October | November | December.