S
M
T
W
T
F
S
27
56°
38°
28
55°
34°
29
55°
37°
30
43°
36°
1
43°
33°
2
46°
38°
3
49°
41°
4
46°
41°
5
50°
42°
6
51°
36°
7
50°
33°
8
48°
32°
9
44°
35°
10
47°
35°
11
48°
36°
12
47°
34°
13
45°
32°
14
44°
29°
15
41°
35°
16
41°
33°
17
40°
27°
18
38°
26°
19
37°
23°
20
35°
22°
21
34°
23°
22
36°
24°
23
36°
24°
24
39°
31°
25
43°
31°
26
43°
30°
27
40°
29°
28
38°
28°
29
39°
29°
30
38°
27°
31
40°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Port Nikiski
Port Nikiski's October 2026 forecast shows daily high temperatures ranging from 34° to 51°, with overnight lows between 22° and 42°. The average high for October is 42° with an average low of 31°. 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 Port Nikiski. See also: November | December | January.