S
M
T
W
T
F
S
30
93°
76°
31
89°
78°
1
92°
76°
2
92°
75°
3
92°
75°
4
94°
75°
5
92°
77°
6
92°
77°
7
91°
79°
8
93°
78°
9
92°
77°
10
90°
79°
11
90°
78°
12
92°
75°
13
91°
78°
14
92°
77°
15
91°
77°
16
89°
77°
17
90°
76°
18
90°
76°
19
89°
77°
20
89°
77°
21
89°
78°
22
88°
77°
23
88°
77°
24
89°
76°
25
88°
77°
26
88°
77°
27
89°
76°
28
88°
77°
29
88°
76°
30
89°
76°
1
88°
75°
2
89°
77°
3
88°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lajas
Lajas's September 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 75° and 79°. The average high for September is 90° with an average low of 77°. 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 Lajas. See also: October | November | December.