S
M
T
W
T
F
S
30
74°
54°
31
73°
53°
1
73°
59°
2
74°
62°
3
75°
62°
4
81°
61°
5
81°
60°
6
79°
53°
7
75°
53°
8
74°
54°
9
73°
51°
10
71°
51°
11
72°
52°
12
71°
52°
13
74°
56°
14
76°
58°
15
75°
56°
16
71°
53°
17
70°
54°
18
71°
56°
19
72°
48°
20
71°
51°
21
70°
48°
22
75°
47°
23
68°
46°
24
68°
47°
25
67°
53°
26
69°
46°
27
68°
52°
28
68°
52°
29
66°
44°
30
65°
47°
1
65°
52°
2
71°
49°
3
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Highland Mills
Highland Mills's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 44° and 62°. The average high for September is 72° with an average low of 52°. 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 Highland Mills. See also: October | November | December.