S
M
T
W
T
F
S
26
93°
71°
27
93°
73°
28
93°
72°
29
92°
72°
30
93°
71°
31
94°
72°
1
94°
72°
2
93°
72°
3
94°
71°
4
94°
72°
5
93°
72°
6
94°
71°
7
94°
72°
8
93°
72°
9
94°
72°
10
94°
72°
11
93°
70°
12
93°
71°
13
90°
70°
14
91°
71°
15
87°
67°
16
87°
69°
17
88°
69°
18
89°
70°
19
90°
70°
20
91°
69°
21
88°
70°
22
91°
70°
23
92°
69°
24
92°
68°
25
92°
69°
26
90°
69°
27
91°
68°
28
92°
69°
29
93°
68°
30
91°
69°
31
91°
68°
1
90°
68°
2
91°
67°
3
85°
62°
4
85°
62°
5
84°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in De Kalb
De Kalb's August 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 62° and 73°. The average high for August is 91° 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 De Kalb. See also: September | October | November.
