S
M
T
W
T
F
S
30
85°
57°
31
85°
59°
1
86°
60°
2
91°
59°
3
89°
56°
4
85°
52°
5
82°
53°
6
82°
57°
7
89°
59°
8
90°
58°
9
87°
56°
10
85°
56°
11
86°
54°
12
87°
53°
13
82°
51°
14
81°
49°
15
82°
50°
16
81°
52°
17
84°
53°
18
87°
53°
19
87°
45°
20
81°
49°
21
78°
48°
22
81°
52°
23
Hist. Avg.
81°
48°
24
Hist. Avg.
80°
48°
25
Hist. Avg.
80°
47°
26
Hist. Avg.
80°
46°
27
Hist. Avg.
79°
46°
28
Hist. Avg.
78°
45°
29
Hist. Avg.
78°
45°
30
Hist. Avg.
78°
44°
1
Hist. Avg.
77°
44°
2
Hist. Avg.
77°
43°
3
Hist. Avg.
76°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lamar
Lamar's September 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 45° and 60°. The average high for September is 85° with an average low of 54°. 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 Lamar. See also: October | November | December.
