S
M
T
W
T
F
S
30
75°
56°
31
74°
55°
1
75°
56°
2
74°
59°
3
75°
60°
4
76°
61°
5
75°
61°
6
76°
62°
7
82°
62°
8
81°
61°
9
79°
61°
10
74°
60°
11
79°
61°
12
76°
60°
13
72°
59°
14
71°
58°
15
70°
58°
16
70°
57°
17
71°
58°
18
69°
58°
19
73°
57°
20
70°
56°
21
79°
56°
22
79°
49°
23
75°
45°
24
69°
47°
25
68°
53°
26
72°
52°
27
70°
55°
28
76°
53°
29
76°
50°
30
75°
52°
1
73°
53°
2
74°
51°
3
74°
50°
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 68° to 82°, with overnight lows between 45° and 62°. The average high for September is 74° 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 Reading. See also: October | November | December.