S
M
T
W
T
F
S
31
82°
53°
1
82°
53°
2
88°
46°
3
83°
49°
4
87°
52°
5
68°
47°
6
80°
43°
7
82°
53°
8
93°
58°
9
90°
49°
10
88°
55°
11
89°
64°
12
90°
56°
13
83°
61°
14
70°
53°
15
87°
50°
16
75°
56°
17
70°
54°
18
72°
54°
19
77°
49°
20
82°
53°
21
83°
52°
22
85°
52°
23
57°
53°
24
73°
47°
25
83°
45°
26
85°
41°
27
78°
47°
28
86°
53°
29
82°
54°
30
82°
50°
1
82°
47°
2
87°
47°
3
89°
53°
4
87°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Merino
Merino's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Merino. See also: October | November | December.
