S
M
T
W
T
F
S
30
88°
75°
31
87°
76°
1
88°
74°
2
94°
76°
3
94°
78°
4
89°
77°
5
87°
75°
6
85°
75°
7
86°
74°
8
88°
75°
9
88°
73°
10
87°
74°
11
90°
74°
12
86°
78°
13
88°
77°
14
84°
78°
15
88°
77°
16
89°
78°
17
87°
79°
18
87°
75°
19
87°
75°
20
89°
76°
21
90°
76°
22
88°
77°
23
87°
76°
24
87°
76°
25
88°
77°
26
87°
76°
27
86°
76°
28
86°
76°
29
87°
75°
30
87°
75°
1
86°
76°
2
87°
76°
3
88°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Phon Thong
Phon Thong's September 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 73° and 79°. The average high for September is 87° with an average low of 76°. 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 Phon Thong. See also: October | November | December.