S
M
T
W
T
F
S
30
84°
53°
31
81°
56°
1
82°
60°
2
89°
57°
3
90°
59°
4
91°
59°
5
90°
69°
6
91°
69°
7
88°
60°
8
87°
57°
9
72°
40°
10
77°
44°
11
81°
49°
12
82°
42°
13
88°
41°
14
84°
48°
15
83°
53°
16
82°
52°
17
79°
52°
18
77°
52°
19
78°
51°
20
70°
49°
21
70°
49°
22
72°
52°
23
72°
55°
24
66°
55°
25
67°
54°
26
68°
54°
27
70°
53°
28
70°
54°
29
68°
53°
30
67°
53°
1
67°
52°
2
68°
52°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lagunaseca
Lagunaseca's September 2026 forecast shows daily high temperatures ranging from 66° to 88°, with overnight lows between 40° and 60°. The average high for September is 75° with an average low of 51°. 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 Lagunaseca. See also: October | November | December.
