S
M
T
W
T
F
S
30
83°
62°
31
85°
63°
1
84°
63°
2
84°
62°
3
83°
55°
4
77°
54°
5
76°
57°
6
79°
62°
7
83°
62°
8
83°
61°
9
77°
56°
10
76°
60°
11
82°
61°
12
81°
61°
13
82°
60°
14
82°
60°
15
81°
59°
16
81°
59°
17
76°
57°
18
80°
51°
19
72°
50°
20
73°
49°
21
70°
48°
22
71°
52°
23
72°
50°
24
72°
48°
25
70°
48°
26
71°
53°
27
72°
54°
28
76°
55°
29
75°
54°
30
76°
54°
1
70°
53°
2
74°
52°
3
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grant Town
Grant Town's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 48° and 63°. The average high for September is 77° 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 Grant Town. See also: October | November | December.