S
M
T
W
T
F
S
30
79°
57°
31
76°
57°
1
76°
63°
2
77°
65°
3
82°
64°
4
85°
65°
5
84°
63°
6
81°
56°
7
79°
57°
8
77°
56°
9
76°
55°
10
74°
54°
11
74°
55°
12
75°
55°
13
78°
60°
14
79°
61°
15
76°
55°
16
74°
57°
17
73°
56°
18
74°
59°
19
76°
52°
20
75°
55°
21
73°
53°
22
78°
51°
23
71°
50°
24
71°
50°
25
70°
55°
26
72°
52°
27
72°
56°
28
73°
56°
29
74°
48°
30
70°
51°
1
68°
56°
2
75°
54°
3
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in The Highlands
The Highlands's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 48° and 65°. The average high for September is 75° with an average low of 56°. 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 The Highlands. See also: October | November | December.