S
M
T
W
T
F
S
30
92°
69°
31
91°
70°
1
90°
68°
2
90°
67°
3
89°
68°
4
89°
63°
5
88°
68°
6
90°
66°
7
89°
67°
8
88°
66°
9
88°
67°
10
89°
67°
11
88°
66°
12
84°
66°
13
83°
65°
14
83°
65°
15
84°
66°
16
84°
65°
17
83°
64°
18
84°
63°
19
83°
61°
20
82°
58°
21
81°
58°
22
82°
59°
23
83°
61°
24
84°
62°
25
85°
63°
26
84°
62°
27
85°
61°
28
80°
57°
29
81°
55°
30
80°
56°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
80°
55°
3
Hist. Avg.
79°
55°
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 80° to 92°, with overnight lows between 55° and 70°. The average high for September is 86° with an average low of 64°. 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.