S
M
T
W
T
F
S
27
86°
61°
28
88°
68°
29
86°
64°
30
86°
70°
1
86°
75°
2
86°
73°
3
86°
72°
4
86°
73°
5
84°
75°
6
79°
73°
7
82°
75°
8
81°
73°
9
81°
76°
10
87°
74°
11
84°
65°
12
86°
65°
13
84°
65°
14
85°
67°
15
83°
71°
16
83°
69°
17
81°
65°
18
78°
67°
19
79°
66°
20
76°
61°
21
74°
63°
22
75°
60°
23
75°
66°
24
74°
66°
25
74°
67°
26
75°
66°
27
77°
62°
28
77°
59°
29
72°
61°
30
72°
65°
31
75°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Marys
St. Marys's October 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 59° and 76°. The average high for October is 79° with an average low of 66°. 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. Marys. See also: November | December | January.
