S
M
T
W
T
F
S
30
83°
65°
31
83°
66°
1
85°
66°
2
86°
68°
3
87°
67°
4
87°
68°
5
86°
69°
6
86°
68°
7
84°
67°
8
86°
68°
9
85°
68°
10
86°
66°
11
83°
67°
12
84°
66°
13
84°
67°
14
83°
65°
15
85°
67°
16
84°
66°
17
83°
66°
18
84°
66°
19
Hist. Avg.
82°
65°
20
Hist. Avg.
82°
64°
21
Hist. Avg.
82°
64°
22
Hist. Avg.
82°
64°
23
Hist. Avg.
82°
63°
24
Hist. Avg.
81°
63°
25
Hist. Avg.
81°
62°
26
Hist. Avg.
81°
62°
27
Hist. Avg.
80°
62°
28
Hist. Avg.
80°
61°
29
Hist. Avg.
80°
61°
30
Hist. Avg.
80°
61°
1
Hist. Avg.
79°
60°
2
Hist. Avg.
79°
60°
3
Hist. Avg.
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grantsboro
Grantsboro's September 2026 forecast shows daily high temperatures ranging from 83° to 87°, with overnight lows between 65° and 69°. The average high for September is 85° with an average low of 67°. 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 Grantsboro. See also: October | November | December.
