S
M
T
W
T
F
S
30
72°
63°
31
81°
52°
1
79°
46°
2
78°
48°
3
80°
50°
4
68°
53°
5
72°
59°
6
82°
51°
7
78°
62°
8
77°
63°
9
70°
48°
10
76°
40°
11
77°
51°
12
64°
41°
13
62°
33°
14
56°
52°
15
62°
36°
16
63°
46°
17
67°
43°
18
67°
52°
19
67°
49°
20
65°
43°
21
67°
44°
22
69°
49°
23
67°
44°
24
69°
48°
25
69°
49°
26
72°
48°
27
68°
48°
28
58°
46°
29
63°
46°
30
62°
45°
1
65°
45°
2
63°
44°
3
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Side Lake
Side Lake's September 2026 forecast shows daily high temperatures ranging from 56° to 72°, with overnight lows between 36° and 52°. The average high for September is 65° with an average low of 46°. 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 Side Lake. See also: October | November | December.
