S
M
T
W
T
F
S
26
84°
68°
27
86°
68°
28
87°
67°
29
86°
67°
30
85°
66°
31
78°
65°
1
79°
66°
2
86°
68°
3
87°
68°
4
87°
67°
5
88°
68°
6
86°
67°
7
83°
66°
8
83°
60°
9
84°
58°
10
78°
59°
11
78°
60°
12
79°
58°
13
78°
59°
14
78°
58°
15
77°
63°
16
79°
62°
17
83°
61°
18
78°
58°
19
78°
57°
20
81°
58°
21
81°
60°
22
82°
62°
23
84°
64°
24
84°
65°
25
85°
65°
26
86°
63°
27
85°
56°
28
80°
55°
29
76°
56°
30
75°
55°
31
76°
54°
1
77°
55°
2
75°
54°
3
75°
53°
4
76°
55°
5
78°
58°
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 75° to 88°, with overnight lows between 53° and 68°. The average high for August is 81° with an average low of 61°. 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.
