S
M
T
W
T
F
S
27
59°
45°
28
51°
37°
29
56°
41°
30
56°
43°
1
61°
43°
2
64°
57°
3
60°
43°
4
57°
42°
5
55°
42°
6
62°
49°
7
55°
42°
8
58°
40°
9
62°
48°
10
53°
38°
11
50°
34°
12
54°
35°
13
39°
29°
14
49°
29°
15
58°
38°
16
46°
37°
17
61°
37°
18
42°
33°
19
45°
29°
20
51°
38°
21
43°
33°
22
46°
33°
23
40°
35°
24
40°
33°
25
50°
33°
26
58°
44°
27
45°
31°
28
39°
34°
29
45°
41°
30
53°
44°
31
47°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. John's
St. John's's October 2026 forecast shows daily high temperatures ranging from 39° to 53°, with overnight lows between 31° and 44°. The average high for October is 46° with an average low of 36°. 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 St. John's. See also: November | December | January.