S
M
T
W
T
F
S
30
95°
76°
31
94°
75°
1
93°
74°
2
92°
75°
3
94°
75°
4
95°
74°
5
91°
74°
6
86°
73°
7
88°
74°
8
88°
73°
9
90°
73°
10
91°
72°
11
93°
73°
12
93°
73°
13
91°
72°
14
93°
69°
15
94°
71°
16
93°
69°
17
92°
71°
18
93°
72°
19
90°
66°
20
89°
65°
21
87°
68°
22
89°
68°
23
90°
69°
24
91°
70°
25
91°
69°
26
90°
69°
27
88°
68°
28
88°
64°
29
89°
63°
30
88°
64°
1
89°
65°
2
90°
64°
3
90°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Guy
Guy's September 2026 forecast shows daily high temperatures ranging from 86° to 95°, with overnight lows between 63° and 76°. The average high for September is 91° with an average low of 70°. 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 Guy. See also: October | November | December.