S
M
T
W
T
F
S
27
81°
52°
28
78°
48°
29
71°
47°
30
71°
51°
1
75°
55°
2
79°
55°
3
79°
54°
4
80°
54°
5
79°
55°
6
78°
55°
7
79°
45°
8
76°
44°
9
67°
42°
10
64°
42°
11
66°
51°
12
66°
53°
13
69°
54°
14
76°
48°
15
77°
48°
16
71°
44°
17
68°
39°
18
63°
41°
19
63°
39°
20
62°
48°
21
67°
48°
22
71°
46°
23
73°
41°
24
63°
37°
25
61°
47°
26
60°
46°
27
63°
36°
28
59°
34°
29
58°
33°
30
55°
36°
31
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Peters
St. Peters's October 2026 forecast shows daily high temperatures ranging from 55° to 81°, with overnight lows between 33° and 55°. The average high for October is 69° with an average low of 46°. 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. Peters. See also: November | December | January.
