S
M
T
W
T
F
S
30
87°
59°
31
88°
59°
1
87°
54°
2
84°
52°
3
80°
56°
4
80°
57°
5
85°
55°
6
86°
56°
7
79°
55°
8
83°
54°
9
79°
56°
10
78°
52°
11
79°
52°
12
85°
50°
13
81°
53°
14
75°
48°
15
75°
47°
16
Hist. Avg.
82°
49°
17
Hist. Avg.
81°
48°
18
Hist. Avg.
81°
48°
19
Hist. Avg.
80°
47°
20
Hist. Avg.
80°
47°
21
Hist. Avg.
79°
46°
22
Hist. Avg.
79°
46°
23
Hist. Avg.
78°
45°
24
Hist. Avg.
78°
45°
25
Hist. Avg.
77°
44°
26
Hist. Avg.
76°
44°
27
Hist. Avg.
76°
43°
28
Hist. Avg.
75°
43°
29
Hist. Avg.
75°
42°
30
Hist. Avg.
74°
42°
1
Hist. Avg.
74°
41°
2
Hist. Avg.
73°
41°
3
Hist. Avg.
72°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Merino
Merino's September 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 47° and 59°. The average high for September is 82° with an average low of 54°. 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.
