S
M
T
W
T
F
S
26
83°
67°
27
79°
61°
28
80°
63°
29
82°
64°
30
80°
60°
31
81°
58°
1
79°
59°
2
79°
57°
3
80°
59°
4
79°
58°
5
79°
59°
6
80°
59°
7
79°
60°
8
81°
64°
9
82°
64°
10
84°
62°
11
85°
58°
12
85°
66°
13
86°
58°
14
81°
56°
15
78°
59°
16
79°
61°
17
80°
58°
18
78°
57°
19
77°
56°
20
77°
56°
21
78°
57°
22
76°
56°
23
76°
56°
24
77°
57°
25
77°
63°
26
78°
64°
27
83°
65°
28
85°
62°
29
85°
55°
30
79°
57°
31
77°
57°
1
75°
61°
2
75°
56°
3
76°
52°
4
75°
58°
5
74°
62°
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 86°, with overnight lows between 52° and 67°. The average high for August is 80° with an average low of 59°. 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.
