S
M
T
W
T
F
S
30
80°
55°
31
81°
57°
1
79°
61°
2
77°
61°
3
85°
60°
4
86°
61°
5
83°
56°
6
80°
53°
7
79°
57°
8
84°
55°
9
77°
52°
10
77°
55°
11
78°
51°
12
79°
51°
13
79°
57°
14
82°
51°
15
75°
51°
16
74°
54°
17
73°
52°
18
74°
55°
19
78°
47°
20
74°
51°
21
77°
50°
22
79°
48°
23
77°
47°
24
78°
47°
25
77°
51°
26
77°
53°
27
76°
53°
28
77°
52°
29
78°
46°
30
71°
50°
1
74°
52°
2
77°
50°
3
76°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Edinburg
Edinburg's September 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 46° and 61°. The average high for September is 78° with an average low of 53°. 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 Edinburg. See also: October | November | December.