S
M
T
W
T
F
S
27
84°
59°
28
83°
59°
29
82°
58°
30
83°
59°
1
83°
59°
2
82°
58°
3
83°
57°
4
82°
56°
5
79°
56°
6
80°
55°
7
79°
51°
8
69°
45°
9
68°
46°
10
74°
50°
11
78°
52°
12
78°
52°
13
77°
53°
14
78°
53°
15
78°
52°
16
77°
51°
17
72°
50°
18
76°
51°
19
74°
52°
20
73°
49°
21
71°
46°
22
69°
42°
23
62°
45°
24
65°
47°
25
69°
48°
26
65°
36°
27
68°
39°
28
66°
46°
29
70°
49°
30
73°
50°
31
71°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sidney
Sidney's October 2026 forecast shows daily high temperatures ranging from 62° to 84°, with overnight lows between 36° and 59°. The average high for October is 75° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sidney. See also: November | December | January.