S
M
T
W
T
F
S
26
100°
61°
27
96°
61°
28
99°
62°
29
100°
64°
30
96°
63°
31
94°
63°
1
101°
68°
2
102°
58°
3
83°
55°
4
80°
51°
5
81°
52°
6
83°
53°
7
82°
56°
8
90°
55°
9
91°
62°
10
88°
62°
11
87°
61°
12
80°
56°
13
81°
60°
14
90°
62°
15
90°
59°
16
80°
59°
17
85°
61°
18
90°
60°
19
81°
60°
20
88°
59°
21
92°
62°
22
90°
61°
23
87°
59°
24
85°
60°
25
89°
59°
26
88°
60°
27
82°
59°
28
81°
58°
29
82°
58°
30
80°
57°
31
82°
57°
1
76°
56°
2
75°
56°
3
74°
53°
4
73°
50°
5
73°
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 73° to 102°, with overnight lows between 50° and 68°. The average high for August is 86° 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 Sidney. See also: September | October | November.
