S
M
T
W
T
F
S
27
70°
54°
28
64°
53°
29
60°
44°
30
67°
46°
1
65°
58°
2
65°
44°
3
62°
40°
4
62°
48°
5
56°
35°
6
55°
38°
7
60°
48°
8
66°
49°
9
62°
42°
10
59°
46°
11
66°
49°
12
57°
42°
13
53°
43°
14
58°
43°
15
60°
31°
16
60°
43°
17
60°
40°
18
58°
39°
19
58°
43°
20
57°
41°
21
56°
38°
22
52°
41°
23
57°
41°
24
57°
34°
25
51°
39°
26
57°
32°
27
45°
30°
28
50°
30°
29
53°
37°
30
52°
35°
31
54°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Nepean
Nepean's October 2026 forecast shows daily high temperatures ranging from 45° to 66°, with overnight lows between 30° and 49°. The average high for October is 57° with an average low of 40°. 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 Nepean. See also: November | December | January.