S
M
T
W
T
F
S
30
90°
77°
31
91°
77°
1
91°
76°
2
90°
77°
3
91°
78°
4
90°
76°
5
91°
76°
6
90°
77°
7
91°
78°
8
90°
77°
9
91°
77°
10
92°
76°
11
91°
78°
12
91°
76°
13
91°
76°
14
92°
77°
15
Hist. Avg.
90°
69°
16
Hist. Avg.
90°
69°
17
Hist. Avg.
90°
69°
18
Hist. Avg.
90°
69°
19
Hist. Avg.
90°
69°
20
Hist. Avg.
90°
69°
21
Hist. Avg.
90°
69°
22
Hist. Avg.
90°
69°
23
Hist. Avg.
90°
69°
24
Hist. Avg.
90°
69°
25
Hist. Avg.
90°
69°
26
Hist. Avg.
90°
69°
27
Hist. Avg.
90°
69°
28
Hist. Avg.
90°
69°
29
Hist. Avg.
90°
69°
30
Hist. Avg.
90°
69°
1
Hist. Avg.
90°
69°
2
Hist. Avg.
90°
69°
3
Hist. Avg.
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lajas
Lajas's September 2026 forecast shows daily high temperatures ranging from 90° to 92°, with overnight lows between 76° and 78°. The average high for September is 91° 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.