S
M
T
W
T
F
S
27
70°
50°
28
67°
43°
29
67°
49°
30
68°
45°
1
69°
48°
2
65°
48°
3
68°
47°
4
65°
42°
5
62°
44°
6
64°
46°
7
58°
38°
8
56°
40°
9
61°
45°
10
65°
44°
11
66°
46°
12
68°
45°
13
65°
43°
14
55°
43°
15
63°
38°
16
52°
33°
17
51°
37°
18
51°
38°
19
56°
41°
20
62°
40°
21
54°
35°
22
50°
37°
23
60°
40°
24
61°
40°
25
59°
41°
26
54°
37°
27
57°
40°
28
56°
37°
29
55°
33°
30
54°
36°
31
49°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Peter
St. Peter's October 2026 forecast shows daily high temperatures ranging from 49° to 70°, with overnight lows between 29° and 50°. The average high for October is 60° with an average low of 41°. 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. Peter. See also: November | December | January.