S
M
T
W
T
F
S
30
90°
67°
31
85°
61°
1
81°
52°
2
86°
60°
3
93°
69°
4
89°
61°
5
90°
72°
6
84°
65°
7
78°
65°
8
84°
54°
9
78°
52°
10
84°
62°
11
89°
51°
12
74°
51°
13
65°
53°
14
63°
46°
15
68°
47°
16
69°
49°
17
67°
48°
18
67°
48°
19
71°
49°
20
72°
48°
21
70°
45°
22
74°
54°
23
75°
53°
24
74°
52°
25
70°
51°
26
69°
52°
27
73°
52°
28
72°
51°
29
69°
49°
30
60°
48°
1
59°
44°
2
58°
39°
3
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hayti
Hayti's September 2026 forecast shows daily high temperatures ranging from 57° to 89°, with overnight lows between 39° and 62°. The average high for September is 70° 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 Hayti. See also: October | November | December.