S
M
T
W
T
F
S
30
94°
62°
31
93°
62°
1
88°
60°
2
93°
60°
3
96°
59°
4
97°
65°
5
97°
65°
6
96°
68°
7
98°
68°
8
95°
64°
9
99°
65°
10
95°
64°
11
96°
63°
12
94°
62°
13
97°
65°
14
89°
57°
15
94°
58°
16
93°
57°
17
83°
51°
18
78°
57°
19
84°
56°
20
75°
54°
21
76°
55°
22
83°
55°
23
85°
56°
24
85°
54°
25
81°
51°
26
71°
44°
27
72°
48°
28
73°
50°
29
82°
51°
30
78°
49°
1
81°
50°
2
71°
46°
3
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lamar
Lamar's September 2026 forecast shows daily high temperatures ranging from 71° to 99°, with overnight lows between 44° and 68°. The average high for September is 86° with an average low of 56°. 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.
