S
M
T
W
T
F
S
30
64°
46°
31
61°
44°
1
60°
46°
2
60°
45°
3
61°
46°
4
60°
44°
5
61°
45°
6
60°
48°
7
59°
47°
8
63°
48°
9
60°
47°
10
59°
44°
11
61°
48°
12
62°
48°
13
62°
44°
14
59°
42°
15
57°
43°
16
58°
45°
17
62°
46°
18
63°
47°
19
63°
49°
20
62°
49°
21
63°
48°
22
63°
47°
23
62°
46°
24
60°
44°
25
56°
42°
26
54°
45°
27
56°
43°
28
58°
42°
29
55°
41°
30
54°
40°
1
Hist. Avg.
55°
35°
2
Hist. Avg.
55°
35°
3
Hist. Avg.
55°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Triton
Triton's September 2026 forecast shows daily high temperatures ranging from 54° to 64°, with overnight lows between 40° and 49°. The average high for September is 60° with an average low of 45°. 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 Triton. See also: October | November | December.