S
M
T
W
T
F
S
30
71°
57°
31
78°
60°
1
75°
57°
2
77°
65°
3
77°
58°
4
74°
54°
5
72°
52°
6
74°
52°
7
77°
52°
8
69°
51°
9
70°
52°
10
73°
55°
11
69°
54°
12
68°
54°
13
69°
51°
14
67°
45°
15
68°
53°
16
73°
53°
17
70°
48°
18
65°
45°
19
66°
44°
20
73°
53°
21
73°
53°
22
74°
54°
23
74°
51°
24
72°
50°
25
72°
50°
26
73°
52°
27
72°
51°
28
73°
48°
29
66°
44°
30
59°
41°
1
59°
43°
2
64°
49°
3
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Raymondville
Raymondville's September 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 41° and 65°. The average high for September is 70° 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 Raymondville. See also: October | November | December.