S
M
T
W
T
F
S
30
91°
78°
31
90°
77°
1
90°
78°
2
92°
78°
3
90°
76°
4
89°
77°
5
91°
77°
6
92°
78°
7
92°
79°
8
94°
79°
9
92°
78°
10
93°
75°
11
91°
75°
12
90°
76°
13
91°
74°
14
88°
73°
15
87°
72°
16
88°
73°
17
87°
72°
18
88°
73°
19
91°
77°
20
91°
75°
21
87°
73°
22
86°
72°
23
Hist. Avg.
89°
73°
24
Hist. Avg.
89°
73°
25
Hist. Avg.
89°
72°
26
Hist. Avg.
89°
72°
27
Hist. Avg.
89°
72°
28
Hist. Avg.
88°
72°
29
Hist. Avg.
88°
72°
30
Hist. Avg.
88°
71°
1
Hist. Avg.
88°
71°
2
Hist. Avg.
88°
71°
3
Hist. Avg.
87°
70°
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 86° to 94°, with overnight lows between 72° and 79°. The average high for September is 90° with an average low of 76°. 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.
