S
M
T
W
T
F
S
26
90°
73°
27
95°
67°
28
91°
67°
29
93°
72°
30
96°
71°
31
98°
73°
1
97°
72°
2
98°
73°
3
99°
67°
4
92°
67°
5
90°
68°
6
91°
67°
7
91°
68°
8
92°
72°
9
95°
74°
10
97°
72°
11
98°
73°
12
96°
75°
13
96°
73°
14
99°
71°
15
97°
69°
16
90°
72°
17
96°
72°
18
98°
69°
19
96°
66°
20
88°
64°
21
89°
70°
22
93°
65°
23
92°
69°
24
90°
70°
25
88°
70°
26
88°
71°
27
94°
71°
28
94°
70°
29
95°
70°
30
95°
69°
31
87°
70°
1
92°
70°
2
91°
68°
3
93°
69°
4
92°
69°
5
92°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lamar
Lamar's August 2026 forecast shows daily high temperatures ranging from 87° to 99°, with overnight lows between 64° and 75°. The average high for August is 93° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lamar. See also: September | October | November.