S
M
T
W
T
F
S
30
76°
59°
31
75°
61°
1
77°
59°
2
74°
60°
3
75°
60°
4
75°
57°
5
74°
56°
6
73°
56°
7
73°
57°
8
74°
57°
9
74°
58°
10
76°
59°
11
71°
61°
12
76°
55°
13
75°
55°
14
75°
53°
15
70°
53°
16
71°
54°
17
70°
58°
18
69°
53°
19
70°
51°
20
70°
51°
21
69°
55°
22
69°
57°
23
69°
57°
24
68°
53°
25
Hist. Avg.
69°
52°
26
Hist. Avg.
68°
52°
27
Hist. Avg.
68°
51°
28
Hist. Avg.
68°
51°
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 68° to 77°, with overnight lows between 51° and 61°. The average high for September is 73° 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 Sapporo-shi. See also: October | November | December.