S
M
T
W
T
F
S
26
106°
79°
27
90°
71°
28
91°
63°
29
92°
64°
30
95°
64°
31
87°
58°
1
91°
58°
2
101°
68°
3
96°
63°
4
63°
52°
5
79°
50°
6
96°
57°
7
88°
58°
8
96°
64°
9
94°
58°
10
97°
64°
11
98°
64°
12
89°
64°
13
79°
64°
14
85°
63°
15
80°
62°
16
81°
56°
17
88°
60°
18
88°
59°
19
81°
57°
20
87°
59°
21
89°
59°
22
88°
60°
23
91°
59°
24
87°
57°
25
87°
59°
26
89°
57°
27
90°
57°
28
84°
55°
29
86°
52°
30
89°
58°
31
79°
56°
1
77°
54°
2
76°
56°
3
78°
55°
4
81°
56°
5
84°
56°
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 76° to 91°, with overnight lows between 52° and 60°. The average high for August is 85° with an average low of 57°. 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.
