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