S
M
T
W
T
F
S
30
76°
63°
31
75°
67°
1
80°
67°
2
81°
63°
3
78°
61°
4
74°
60°
5
73°
58°
6
76°
61°
7
75°
60°
8
74°
62°
9
74°
63°
10
75°
53°
11
72°
58°
12
74°
57°
13
74°
59°
14
73°
59°
15
75°
58°
16
74°
57°
17
69°
57°
18
74°
56°
19
70°
58°
20
72°
57°
21
72°
58°
22
73°
58°
23
73°
55°
24
66°
54°
25
62°
52°
26
64°
53°
27
67°
53°
28
69°
54°
29
70°
54°
30
70°
53°
1
69°
54°
2
69°
54°
3
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whitby
Whitby's September 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 52° and 67°. The average high for September is 72° with an average low of 58°. 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 Whitby. See also: October | November | December.
