S
M
T
W
T
F
S
30
93°
67°
31
93°
68°
1
92°
66°
2
92°
62°
3
89°
60°
4
86°
64°
5
90°
64°
6
89°
65°
7
90°
64°
8
89°
65°
9
89°
65°
10
88°
64°
11
89°
62°
12
83°
61°
13
82°
62°
14
81°
62°
15
81°
61°
16
82°
62°
17
81°
61°
18
79°
55°
19
79°
53°
20
78°
52°
21
77°
53°
22
78°
57°
23
80°
59°
24
83°
60°
25
84°
59°
26
82°
52°
27
77°
57°
28
74°
53°
29
76°
51°
30
76°
57°
1
83°
57°
2
Hist. Avg.
77°
52°
3
Hist. Avg.
76°
52°
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 74° to 93°, with overnight lows between 51° and 68°. The average high for September is 84° with an average low of 60°. 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.