S
M
T
W
T
F
S
30
85°
66°
31
88°
67°
1
88°
68°
2
87°
67°
3
88°
69°
4
88°
69°
5
89°
65°
6
84°
67°
7
85°
68°
8
85°
68°
9
84°
66°
10
85°
66°
11
87°
67°
12
87°
67°
13
86°
66°
14
87°
67°
15
87°
67°
16
86°
66°
17
86°
66°
18
85°
65°
19
85°
63°
20
84°
61°
21
85°
63°
22
84°
64°
23
84°
63°
24
85°
60°
25
84°
58°
26
83°
62°
27
82°
63°
28
83°
60°
29
81°
61°
30
82°
62°
1
81°
61°
2
82°
61°
3
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grays
Grays's September 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 58° and 69°. The average high for September is 85° with an average low of 65°. 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 Grays. See also: October | November | December.