S
M
T
W
T
F
S
30
105°
81°
31
105°
81°
1
105°
80°
2
106°
82°
3
106°
83°
4
106°
83°
5
105°
75°
6
104°
78°
7
105°
80°
8
106°
82°
9
104°
81°
10
107°
79°
11
105°
82°
12
105°
81°
13
101°
81°
14
102°
81°
15
102°
79°
16
98°
76°
17
96°
74°
18
94°
75°
19
93°
73°
20
94°
70°
21
93°
72°
22
94°
71°
23
95°
73°
24
92°
69°
25
94°
73°
26
93°
72°
27
93°
73°
28
92°
72°
29
93°
72°
30
94°
71°
1
93°
72°
2
92°
71°
3
90°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in La Joya
La Joya's September 2026 forecast shows daily high temperatures ranging from 90° to 105°, with overnight lows between 69° and 82°. The average high for September is 96° with an average low of 74°. 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 La Joya. See also: October | November | December.