S
M
T
W
T
F
S
30
95°
73°
31
94°
70°
1
94°
69°
2
93°
67°
3
93°
68°
4
92°
73°
5
93°
72°
6
94°
71°
7
92°
72°
8
91°
71°
9
92°
72°
10
93°
70°
11
93°
67°
12
89°
66°
13
89°
67°
14
88°
68°
15
89°
68°
16
84°
67°
17
87°
64°
18
88°
59°
19
82°
60°
20
79°
60°
21
80°
63°
22
81°
66°
23
85°
66°
24
86°
67°
25
87°
66°
26
86°
65°
27
84°
65°
28
86°
58°
29
82°
60°
30
86°
64°
1
85°
64°
2
Hist. Avg.
79°
59°
3
Hist. Avg.
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Northwest Grayson
Northwest Grayson's September 2026 forecast shows daily high temperatures ranging from 79° to 95°, with overnight lows between 58° and 73°. The average high for September is 88° 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 Northwest Grayson. See also: October | November | December.
