S
M
T
W
T
F
S
26
99°
78°
27
98°
77°
28
99°
78°
29
99°
78°
30
98°
79°
31
100°
78°
1
99°
78°
2
99°
77°
3
98°
78°
4
100°
78°
5
99°
77°
6
99°
78°
7
95°
72°
8
96°
75°
9
98°
76°
10
99°
77°
11
93°
74°
12
94°
75°
13
98°
76°
14
97°
76°
15
97°
75°
16
98°
75°
17
98°
76°
18
97°
70°
19
97°
69°
20
92°
68°
21
92°
70°
22
97°
72°
23
98°
71°
24
96°
72°
25
93°
74°
26
96°
73°
27
96°
72°
28
97°
72°
29
95°
70°
30
90°
69°
31
89°
68°
1
90°
69°
2
91°
66°
3
87°
65°
4
87°
66°
5
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Allen
Allen's August 2026 forecast shows daily high temperatures ranging from 87° to 100°, with overnight lows between 65° and 79°. The average high for August is 96° with an average low of 73°. 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 Allen. See also: September | October | November.
