S
M
T
W
T
F
S
30
96°
59°
31
98°
62°
1
98°
74°
2
97°
70°
3
97°
69°
4
98°
72°
5
102°
71°
6
99°
70°
7
94°
68°
8
99°
60°
9
100°
76°
10
92°
71°
11
82°
69°
12
95°
63°
13
95°
67°
14
94°
67°
15
98°
73°
16
95°
71°
17
98°
68°
18
98°
69°
19
99°
67°
20
92°
69°
21
77°
61°
22
71°
54°
23
74°
50°
24
72°
53°
25
74°
52°
26
75°
53°
27
77°
54°
28
78°
55°
29
81°
54°
30
84°
57°
1
74°
50°
2
74°
56°
3
74°
55°
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 71° to 99°, with overnight lows between 50° and 69°. The average high for September is 80° with an average low of 57°. 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.