S
M
T
W
T
F
S
27
84°
60°
28
82°
65°
29
74°
69°
30
83°
69°
1
73°
59°
2
71°
53°
3
78°
47°
4
81°
53°
5
79°
51°
6
88°
53°
7
90°
57°
8
89°
58°
9
89°
57°
10
90°
57°
11
91°
62°
12
92°
69°
13
93°
58°
14
61°
53°
15
61°
49°
16
57°
38°
17
63°
32°
18
67°
41°
19
73°
51°
20
71°
55°
21
77°
57°
22
81°
56°
23
81°
54°
24
81°
56°
25
76°
56°
26
69°
55°
27
72°
58°
28
80°
62°
29
79°
55°
30
69°
55°
31
62°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. John
St. John's October 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 55° and 56°. The average high for October is 66° with an average low of 56°. 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. See also: November | December | January.