S
M
T
W
T
F
S
30
82°
71°
31
90°
72°
1
91°
73°
2
96°
72°
3
97°
72°
4
93°
70°
5
95°
70°
6
85°
66°
7
86°
68°
8
86°
65°
9
88°
62°
10
84°
60°
11
83°
59°
12
78°
59°
13
78°
56°
14
77°
55°
15
76°
50°
16
80°
56°
17
79°
57°
18
73°
53°
19
76°
55°
20
79°
55°
21
77°
54°
22
78°
53°
23
75°
53°
24
77°
52°
25
76°
52°
26
69°
45°
27
65°
41°
28
63°
40°
29
64°
43°
30
64°
39°
1
64°
48°
2
66°
46°
3
62°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Holiday Lake
Holiday Lake's September 2026 forecast shows daily high temperatures ranging from 62° to 97°, with overnight lows between 39° and 72°. The average high for September is 78° with an average low of 55°. 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 Holiday Lake. See also: October | November | December.