S
M
T
W
T
F
S
26
106°
76°
27
90°
71°
28
91°
63°
29
92°
64°
30
95°
64°
31
87°
58°
1
92°
57°
2
103°
67°
3
97°
59°
4
63°
51°
5
79°
49°
6
96°
56°
7
98°
57°
8
97°
64°
9
96°
59°
10
99°
63°
11
99°
63°
12
91°
60°
13
79°
64°
14
88°
63°
15
79°
62°
16
81°
58°
17
93°
59°
18
85°
57°
19
89°
59°
20
92°
60°
21
91°
65°
22
86°
63°
23
94°
66°
24
96°
67°
25
89°
63°
26
85°
59°
27
89°
59°
28
95°
60°
29
96°
61°
30
91°
57°
31
89°
59°
1
86°
59°
2
93°
58°
3
93°
56°
4
96°
59°
5
96°
60°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.