S
M
T
W
T
F
S
30
93°
66°
31
92°
67°
1
89°
69°
2
92°
67°
3
90°
65°
4
89°
64°
5
88°
64°
6
92°
68°
7
92°
68°
8
91°
66°
9
91°
68°
10
92°
67°
11
92°
68°
12
91°
68°
13
91°
67°
14
90°
67°
15
90°
65°
16
91°
65°
17
90°
64°
18
90°
63°
19
89°
64°
20
88°
65°
21
90°
65°
22
89°
64°
23
90°
63°
24
88°
64°
25
88°
60°
26
85°
60°
27
Hist. Avg.
86°
60°
28
Hist. Avg.
86°
60°
29
Hist. Avg.
86°
59°
30
Hist. Avg.
86°
59°
1
Hist. Avg.
85°
58°
2
Hist. Avg.
85°
58°
3
Hist. Avg.
85°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Holy Trinity
Holy Trinity's September 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 60° and 69°. The average high for September is 90° with an average low of 65°. 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 Holy Trinity. See also: October | November | December.