S
M
T
W
T
F
S
27
81°
59°
28
81°
62°
29
82°
57°
30
79°
61°
1
80°
65°
2
87°
63°
3
81°
62°
4
83°
63°
5
85°
61°
6
84°
57°
7
79°
58°
8
80°
56°
9
81°
58°
10
78°
56°
11
86°
61°
12
86°
61°
13
85°
61°
14
Hist. Avg.
81°
58°
15
Hist. Avg.
81°
58°
16
Hist. Avg.
81°
57°
17
Hist. Avg.
80°
57°
18
Hist. Avg.
80°
57°
19
Hist. Avg.
80°
57°
20
Hist. Avg.
80°
56°
21
Hist. Avg.
80°
56°
22
Hist. Avg.
80°
56°
23
Hist. Avg.
80°
56°
24
Hist. Avg.
80°
56°
25
Hist. Avg.
79°
56°
26
Hist. Avg.
79°
55°
27
Hist. Avg.
79°
55°
28
Hist. Avg.
79°
55°
29
Hist. Avg.
79°
55°
30
Hist. Avg.
78°
55°
31
Hist. Avg.
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in San Marino
San Marino's October 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 56° and 65°. The average high for October is 82° with an average low of 60°. 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 San Marino. See also: November | December | January.