S
M
T
W
T
F
S
27
N/A
28
84°
63°
29
100°
61°
30
90°
66°
1
93°
61°
2
104°
63°
3
106°
68°
4
106°
50°
5
106°
70°
6
106°
68°
7
104°
66°
8
97°
66°
9
97°
64°
10
84°
65°
11
71°
62°
12
71°
54°
13
74°
52°
14
82°
51°
15
87°
58°
16
91°
59°
17
93°
60°
18
89°
58°
19
90°
59°
20
88°
60°
21
86°
61°
22
87°
60°
23
80°
54°
24
83°
57°
25
82°
58°
26
82°
58°
27
81°
57°
28
82°
57°
29
81°
56°
30
80°
56°
31
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Santee
Santee's October 2026 forecast shows daily high temperatures ranging from 71° to 93°, with overnight lows between 51° and 65°. The average high for October is 83° with an average low of 58°. 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 Santee. See also: November | December | January.