S
M
T
W
T
F
S
30
72°
57°
31
72°
54°
1
72°
52°
2
68°
59°
3
79°
66°
4
68°
55°
5
70°
52°
6
81°
55°
7
70°
59°
8
N/A
9
64°
47°
10
64°
55°
11
68°
43°
12
67°
59°
13
69°
53°
14
70°
58°
15
70°
52°
16
66°
51°
17
67°
53°
18
68°
53°
19
67°
53°
20
68°
52°
21
66°
53°
22
67°
52°
23
67°
52°
24
66°
51°
25
65°
48°
26
63°
49°
27
63°
46°
28
64°
47°
29
63°
49°
30
64°
50°
1
62°
46°
2
64°
50°
3
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Merriott
Merriott's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 43° and 59°. The average high for September is 66° with an average low of 51°. 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 Merriott. See also: October | November | December.