S
M
T
W
T
F
S
26
99°
73°
27
98°
72°
28
100°
71°
29
98°
75°
30
94°
74°
31
100°
75°
1
92°
70°
2
90°
68°
3
93°
69°
4
97°
72°
5
96°
76°
6
95°
71°
7
97°
72°
8
96°
71°
9
95°
70°
10
95°
71°
11
95°
70°
12
96°
71°
13
94°
71°
14
92°
68°
15
89°
66°
16
88°
65°
17
95°
72°
18
94°
72°
19
94°
71°
20
95°
72°
21
95°
72°
22
94°
71°
23
94°
72°
24
93°
72°
25
94°
71°
26
94°
72°
27
93°
72°
28
94°
71°
29
92°
70°
30
94°
71°
31
93°
70°
1
92°
69°
2
92°
70°
3
93°
70°
4
92°
69°
5
92°
69°
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 88° to 97°, with overnight lows between 65° and 76°. The average high for August is 94° with an average low of 71°. 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.
