S
M
T
W
T
F
S
30
79°
54°
31
75°
61°
1
73°
55°
2
79°
57°
3
79°
57°
4
79°
54°
5
79°
59°
6
75°
57°
7
72°
57°
8
77°
59°
9
75°
57°
10
77°
57°
11
77°
57°
12
79°
57°
13
77°
57°
14
75°
57°
15
77°
55°
16
79°
55°
17
75°
57°
18
75°
57°
19
77°
56°
20
79°
55°
21
79°
55°
22
79°
59°
23
77°
57°
24
79°
57°
25
72°
52°
26
72°
54°
27
73°
55°
28
74°
55°
29
72°
55°
30
72°
53°
1
71°
54°
2
68°
55°
3
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Andrés Metla
San Andrés Metla's September 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 52° and 55°. The average high for September is 71° 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 San Andrés Metla. See also: October | November | December.