S
M
T
W
T
F
S
27
83°
64°
28
87°
65°
29
85°
67°
30
87°
64°
1
87°
64°
2
86°
62°
3
87°
61°
4
80°
60°
5
79°
61°
6
80°
62°
7
80°
60°
8
81°
65°
9
83°
65°
10
84°
64°
11
84°
65°
12
83°
64°
13
85°
58°
14
80°
56°
15
77°
56°
16
75°
57°
17
76°
56°
18
76°
56°
19
77°
60°
20
76°
61°
21
75°
61°
22
79°
60°
23
80°
60°
24
79°
59°
25
80°
58°
26
76°
56°
27
76°
56°
28
Hist. Avg.
75°
54°
29
Hist. Avg.
75°
54°
30
Hist. Avg.
75°
54°
31
Hist. Avg.
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Slidell
Slidell's October 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 56° and 67°. The average high for October is 81° with an average low of 61°. 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 Slidell. See also: November | December | January.