S
M
T
W
T
F
S
31
81°
48°
1
80°
51°
2
88°
50°
3
78°
48°
4
85°
51°
5
67°
41°
6
78°
35°
7
81°
44°
8
90°
53°
9
90°
45°
10
87°
47°
11
87°
60°
12
93°
53°
13
81°
56°
14
66°
53°
15
87°
53°
16
71°
51°
17
69°
49°
18
70°
48°
19
74°
44°
20
81°
46°
21
83°
47°
22
81°
54°
23
58°
51°
24
73°
45°
25
80°
39°
26
87°
44°
27
77°
43°
28
85°
52°
29
80°
48°
30
82°
47°
1
83°
47°
2
86°
44°
3
88°
50°
4
88°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sidney
Sidney's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September 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 September weather will actually feel in Sidney. See also: October | November | December.
