S
M
T
W
T
F
S
26
89°
71°
27
87°
70°
28
89°
73°
29
90°
72°
30
90°
72°
31
89°
73°
1
91°
73°
2
89°
72°
3
89°
73°
4
91°
73°
5
91°
72°
6
90°
72°
7
91°
71°
8
90°
72°
9
91°
73°
10
91°
73°
11
89°
72°
12
86°
72°
13
87°
71°
14
85°
71°
15
85°
69°
16
84°
69°
17
84°
70°
18
85°
67°
19
86°
69°
20
84°
70°
21
84°
70°
22
85°
69°
23
87°
69°
24
90°
68°
25
89°
70°
26
86°
69°
27
84°
68°
28
86°
69°
29
88°
68°
30
87°
70°
31
89°
69°
1
86°
69°
2
83°
68°
3
83°
69°
4
84°
68°
5
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in DeKalb Highlands
DeKalb Highlands's August 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 66° and 73°. The average high for August is 87° 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 DeKalb Highlands. See also: September | October | November.