S
M
T
W
T
F
S
26
83°
66°
27
78°
64°
28
78°
61°
29
79°
65°
30
85°
68°
31
85°
66°
1
81°
63°
2
83°
65°
3
86°
59°
4
78°
61°
5
79°
64°
6
78°
60°
7
79°
58°
8
80°
57°
9
79°
58°
10
79°
65°
11
81°
61°
12
80°
61°
13
84°
57°
14
78°
57°
15
79°
59°
16
79°
58°
17
76°
58°
18
77°
57°
19
78°
56°
20
79°
60°
21
81°
64°
22
81°
64°
23
84°
65°
24
85°
65°
25
86°
61°
26
83°
57°
27
78°
62°
28
82°
63°
29
81°
55°
30
80°
54°
31
76°
53°
1
74°
57°
2
74°
54°
3
75°
55°
4
75°
53°
5
73°
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 73° to 86°, with overnight lows between 53° and 68°. The average high for August is 80° with an average low of 60°. 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.
