S
M
T
W
T
F
S
27
77°
53°
28
69°
57°
29
68°
53°
30
69°
53°
1
70°
62°
2
67°
42°
3
61°
39°
4
68°
42°
5
59°
35°
6
56°
30°
7
84°
51°
8
64°
47°
9
69°
35°
10
58°
37°
11
63°
42°
12
67°
15°
13
75°
59°
14
61°
51°
15
53°
47°
16
62°
40°
17
49°
31°
18
62°
29°
19
66°
33°
20
64°
37°
21
59°
32°
22
65°
36°
23
56°
33°
24
58°
33°
25
62°
33°
26
57°
40°
27
50°
32°
28
58°
37°
29
66°
38°
30
55°
37°
31
56°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Oshawa
Oshawa's October 2026 forecast shows daily high temperatures ranging from 55° to 56°, with overnight lows between 37° and 38°. The average high for October is 56° with an average low of 38°. 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 Oshawa. See also: November | December | January.
