S
M
T
W
T
F
S
26
87°
68°
27
86°
68°
28
87°
67°
29
86°
67°
30
85°
65°
31
81°
61°
1
77°
65°
2
78°
65°
3
78°
63°
4
84°
66°
5
85°
67°
6
84°
66°
7
79°
61°
8
77°
63°
9
78°
64°
10
80°
64°
11
82°
65°
12
83°
66°
13
85°
65°
14
86°
66°
15
85°
65°
16
87°
60°
17
84°
57°
18
78°
55°
19
75°
55°
20
76°
56°
21
77°
55°
22
77°
55°
23
78°
56°
24
77°
57°
25
80°
61°
26
82°
56°
27
80°
56°
28
76°
54°
29
77°
59°
30
81°
62°
31
81°
54°
1
80°
54°
2
74°
53°
3
75°
58°
4
77°
62°
5
82°
53°
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 74° to 87°, 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.
