S
M
T
W
T
F
S
30
88°
66°
31
87°
65°
1
82°
61°
2
83°
60°
3
82°
59°
4
81°
58°
5
82°
59°
6
83°
61°
7
84°
62°
8
85°
58°
9
83°
58°
10
84°
62°
11
86°
63°
12
83°
64°
13
86°
63°
14
86°
63°
15
85°
62°
16
85°
62°
17
86°
63°
18
85°
62°
19
84°
61°
20
82°
60°
21
83°
57°
22
80°
53°
23
76°
59°
24
Hist. Avg.
80°
56°
25
Hist. Avg.
79°
55°
26
Hist. Avg.
79°
55°
27
Hist. Avg.
79°
55°
28
Hist. Avg.
78°
54°
29
Hist. Avg.
78°
54°
30
Hist. Avg.
78°
53°
1
Hist. Avg.
77°
53°
2
Hist. Avg.
77°
53°
3
Hist. Avg.
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hilltop
Hilltop's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 53° and 66°. The average high for September is 84° with an average low of 61°. 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 Hilltop. See also: October | November | December.