S
M
T
W
T
F
S
27
67°
54°
28
69°
55°
29
70°
55°
30
70°
54°
1
69°
54°
2
69°
54°
3
67°
54°
4
67°
54°
5
68°
53°
6
67°
53°
7
66°
54°
8
67°
53°
9
65°
48°
10
62°
51°
11
61°
50°
12
65°
48°
13
64°
48°
14
59°
49°
15
61°
48°
16
61°
47°
17
59°
46°
18
61°
47°
19
63°
50°
20
64°
46°
21
63°
45°
22
60°
46°
23
60°
36°
24
59°
41°
25
47°
44°
26
60°
45°
27
59°
40°
28
56°
38°
29
46°
36°
30
45°
34°
31
44°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Clarington
Clarington's October 2026 forecast shows daily high temperatures ranging from 44° to 70°, with overnight lows between 33° and 55°. The average high for October is 62° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Clarington. See also: November | December | January.