S
M
T
W
T
F
S
26
91°
72°
27
88°
71°
28
90°
72°
29
92°
72°
30
92°
71°
31
90°
72°
1
88°
71°
2
87°
71°
3
89°
70°
4
90°
69°
5
91°
71°
6
91°
70°
7
89°
68°
8
92°
69°
9
89°
68°
10
88°
67°
11
90°
66°
12
92°
68°
13
92°
70°
14
91°
69°
15
91°
70°
16
92°
69°
17
91°
69°
18
90°
70°
19
90°
69°
20
89°
69°
21
87°
68°
22
85°
67°
23
88°
67°
24
91°
68°
25
92°
69°
26
91°
69°
27
90°
68°
28
89°
66°
29
89°
66°
30
88°
67°
31
86°
68°
1
85°
66°
2
86°
63°
3
84°
62°
4
84°
62°
5
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sycamore
Sycamore's August 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 62° and 72°. The average high for August is 89° with an average low of 68°. 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 Sycamore. See also: September | October | November.
