S
M
T
W
T
F
S
27
91°
82°
28
84°
72°
29
89°
69°
30
93°
71°
1
99°
73°
2
102°
78°
3
100°
82°
4
101°
82°
5
102°
81°
6
103°
79°
7
105°
78°
8
106°
76°
9
105°
77°
10
92°
70°
11
85°
72°
12
82°
68°
13
79°
62°
14
81°
58°
15
88°
67°
16
94°
73°
17
83°
73°
18
86°
70°
19
89°
67°
20
92°
69°
21
92°
75°
22
85°
67°
23
80°
62°
24
83°
65°
25
85°
61°
26
87°
60°
27
88°
60°
28
88°
62°
29
87°
66°
30
N/A
31
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in San Luis
San Luis's October 2026 forecast shows daily high temperatures ranging from 80° to 80°, with overnight lows between 66° and 66°. The average high for October is 80° 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 San Luis. See also: November | December | January.