S
M
T
W
T
F
S
26
82°
62°
27
82°
64°
28
85°
63°
29
86°
67°
30
85°
68°
31
90°
68°
1
90°
67°
2
89°
68°
3
89°
70°
4
90°
63°
5
88°
60°
6
83°
59°
7
80°
60°
8
80°
59°
9
81°
60°
10
82°
61°
11
84°
67°
12
89°
68°
13
90°
67°
14
89°
63°
15
90°
60°
16
82°
58°
17
81°
57°
18
82°
60°
19
85°
61°
20
84°
59°
21
85°
58°
22
82°
63°
23
88°
65°
24
88°
64°
25
89°
62°
26
80°
64°
27
83°
65°
28
88°
64°
29
87°
66°
30
88°
60°
31
86°
61°
1
77°
60°
2
84°
61°
3
83°
60°
4
84°
63°
5
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sidney
Sidney's August 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 57° and 70°. The average high for August is 85° with an average low of 63°. 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 Sidney. See also: September | October | November.
