S
M
T
W
T
F
S
30
92°
59°
31
91°
58°
1
92°
59°
2
93°
60°
3
92°
60°
4
92°
56°
5
90°
56°
6
91°
57°
7
89°
54°
8
87°
55°
9
87°
52°
10
85°
53°
11
88°
51°
12
89°
53°
13
88°
50°
14
89°
55°
15
88°
53°
16
84°
55°
17
85°
51°
18
83°
45°
19
82°
47°
20
81°
47°
21
81°
48°
22
85°
54°
23
86°
54°
24
80°
52°
25
78°
53°
26
78°
50°
27
79°
48°
28
78°
46°
29
75°
47°
30
83°
46°
1
83°
48°
2
Hist. Avg.
80°
43°
3
Hist. Avg.
79°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Belen
Belen's September 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 45° and 60°. The average high for September is 86° with an average low of 52°. 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 Belen. See also: October | November | December.