S
M
T
W
T
F
S
30
79°
50°
31
80°
56°
1
82°
58°
2
88°
58°
3
88°
57°
4
80°
48°
5
77°
48°
6
79°
50°
7
78°
46°
8
77°
47°
9
78°
55°
10
75°
53°
11
76°
48°
12
77°
48°
13
76°
53°
14
77°
55°
15
84°
54°
16
85°
48°
17
82°
51°
18
81°
46°
19
83°
47°
20
82°
51°
21
82°
51°
22
80°
46°
23
78°
50°
24
73°
50°
25
71°
48°
26
73°
48°
27
71°
51°
28
70°
52°
29
69°
49°
30
69°
51°
1
76°
52°
2
75°
51°
3
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lacomb
Lacomb's September 2026 forecast shows daily high temperatures ranging from 69° to 88°, with overnight lows between 46° and 58°. The average high for September is 78° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Lacomb. See also: October | November | December.