S
M
T
W
T
F
S
30
71°
49°
31
75°
56°
1
70°
54°
2
76°
54°
3
77°
56°
4
80°
49°
5
74°
47°
6
73°
46°
7
71°
53°
8
73°
54°
9
75°
46°
10
67°
45°
11
66°
43°
12
66°
45°
13
67°
49°
14
66°
42°
15
65°
41°
16
63°
42°
17
63°
40°
18
64°
40°
19
63°
41°
20
63°
42°
21
64°
43°
22
67°
49°
23
67°
47°
24
69°
50°
25
69°
48°
26
65°
39°
27
62°
41°
28
60°
47°
29
59°
43°
30
64°
45°
1
62°
44°
2
59°
36°
3
57°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Unity
Unity's September 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 36° and 56°. The average high for September is 67° with an average low of 46°. 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 Unity. See also: October | November | December.