S
M
T
W
T
F
S
26
93°
62°
27
95°
62°
28
96°
61°
29
97°
63°
30
98°
63°
31
96°
62°
1
90°
58°
2
90°
59°
3
95°
60°
4
90°
58°
5
90°
58°
6
93°
61°
7
96°
60°
8
90°
60°
9
94°
60°
10
95°
61°
11
98°
61°
12
97°
58°
13
96°
57°
14
95°
58°
15
96°
58°
16
96°
61°
17
95°
62°
18
97°
61°
19
97°
60°
20
96°
59°
21
95°
56°
22
92°
54°
23
90°
55°
24
90°
58°
25
91°
56°
26
96°
58°
27
96°
60°
28
97°
60°
29
96°
58°
30
95°
59°
31
96°
57°
1
95°
56°
2
94°
56°
3
94°
57°
4
96°
60°
5
96°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Allendale
Allendale's August 2026 forecast shows daily high temperatures ranging from 90° to 98°, with overnight lows between 54° and 63°. The average high for August is 95° with an average low of 59°. 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 Allendale. See also: September | October | November.