S
M
T
W
T
F
S
30
90°
67°
31
91°
68°
1
90°
66°
2
89°
66°
3
89°
65°
4
88°
61°
5
88°
66°
6
90°
64°
7
88°
65°
8
87°
64°
9
87°
65°
10
88°
65°
11
88°
64°
12
83°
63°
13
81°
64°
14
82°
63°
15
82°
63°
16
84°
62°
17
81°
62°
18
82°
61°
19
81°
56°
20
80°
55°
21
78°
55°
22
79°
56°
23
81°
59°
24
82°
60°
25
83°
61°
26
82°
59°
27
83°
59°
28
77°
53°
29
78°
52°
30
Hist. Avg.
80°
54°
1
Hist. Avg.
80°
53°
2
Hist. Avg.
79°
53°
3
Hist. Avg.
79°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Helicon
Helicon's September 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 52° and 68°. The average high for September is 84° with an average low of 62°. 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 Helicon. See also: October | November | December.