S
M
T
W
T
F
S
30
105°
72°
31
101°
68°
1
98°
67°
2
100°
72°
3
104°
71°
4
104°
67°
5
99°
72°
6
93°
71°
7
99°
73°
8
100°
70°
9
96°
67°
10
89°
67°
11
97°
64°
12
88°
64°
13
100°
61°
14
98°
76°
15
83°
62°
16
91°
58°
17
95°
71°
18
97°
69°
19
92°
67°
20
87°
59°
21
80°
60°
22
85°
55°
23
75°
61°
24
79°
63°
25
76°
60°
26
87°
57°
27
84°
61°
28
84°
63°
29
71°
54°
30
70°
47°
1
74°
48°
2
78°
52°
3
77°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Guymon
Guymon's September 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 47° and 63°. The average high for September is 78° with an average low of 55°. 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 Guymon. See also: October | November | December.
