S
M
T
W
T
F
S
30
71°
53°
31
70°
53°
1
69°
55°
2
70°
55°
3
70°
57°
4
71°
56°
5
71°
53°
6
70°
54°
7
69°
52°
8
68°
50°
9
68°
57°
10
69°
51°
11
67°
51°
12
69°
50°
13
71°
57°
14
73°
52°
15
70°
57°
16
73°
57°
17
73°
56°
18
72°
56°
19
73°
55°
20
73°
52°
21
66°
55°
22
64°
51°
23
65°
53°
24
64°
51°
25
61°
48°
26
68°
45°
27
68°
46°
28
58°
45°
29
57°
46°
30
57°
43°
1
Hist. Avg.
65°
49°
2
Hist. Avg.
65°
49°
3
Hist. Avg.
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Scarborough
Scarborough's September 2026 forecast shows daily high temperatures ranging from 57° to 73°, with overnight lows between 43° and 57°. The average high for September is 68° with an average low of 52°. 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 Scarborough. See also: October | November | December.