S
M
T
W
T
F
S
30
82°
58°
31
79°
59°
1
78°
57°
2
79°
55°
3
78°
57°
4
80°
62°
5
79°
63°
6
80°
61°
7
84°
62°
8
79°
61°
9
77°
57°
10
84°
54°
11
77°
54°
12
78°
57°
13
78°
54°
14
76°
60°
15
82°
61°
16
83°
61°
17
82°
60°
18
80°
51°
19
76°
50°
20
73°
52°
21
73°
56°
22
77°
58°
23
80°
59°
24
79°
58°
25
80°
48°
26
78°
47°
27
69°
47°
28
68°
48°
29
69°
48°
30
69°
46°
1
Hist. Avg.
72°
50°
2
Hist. Avg.
72°
50°
3
Hist. Avg.
72°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pekin
Pekin's September 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 46° 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 Pekin. See also: October | November | December.