S
M
T
W
T
F
S
30
63°
48°
31
66°
54°
1
70°
54°
2
64°
56°
3
63°
52°
4
62°
51°
5
63°
51°
6
62°
50°
7
66°
51°
8
67°
52°
9
68°
53°
10
66°
52°
11
65°
51°
12
63°
50°
13
61°
52°
14
62°
51°
15
66°
48°
16
61°
48°
17
61°
46°
18
61°
45°
19
61°
45°
20
66°
50°
21
67°
51°
22
67°
51°
23
61°
49°
24
61°
44°
25
65°
47°
26
68°
51°
27
69°
51°
28
68°
50°
29
68°
51°
30
67°
50°
1
68°
51°
2
69°
51°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Trinidad
Trinidad's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 44° and 56°. The average high for September is 65° with an average low of 50°. 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 Trinidad. See also: October | November | December.