S
M
T
W
T
F
S
30
78°
62°
31
77°
60°
1
74°
59°
2
74°
65°
3
77°
64°
4
76°
65°
5
77°
64°
6
78°
62°
7
76°
59°
8
72°
55°
9
72°
55°
10
73°
61°
11
71°
55°
12
71°
60°
13
72°
62°
14
71°
58°
15
72°
56°
16
72°
55°
17
71°
58°
18
72°
52°
19
69°
58°
20
70°
55°
21
68°
54°
22
69°
51°
23
69°
56°
24
68°
55°
25
68°
55°
26
68°
50°
27
66°
47°
28
66°
48°
29
Hist. Avg.
67°
51°
30
Hist. Avg.
67°
50°
1
Hist. Avg.
67°
50°
2
Hist. Avg.
67°
49°
3
Hist. Avg.
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sapporo-shi
Sapporo-shi's September 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 47° and 65°. The average high for September is 72° with an average low of 57°. 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 Sapporo-shi. See also: October | November | December.