S
M
T
W
T
F
S
30
72°
58°
31
67°
58°
1
71°
60°
2
73°
58°
3
75°
59°
4
72°
59°
5
75°
58°
6
71°
60°
7
84°
55°
8
90°
59°
9
99°
66°
10
88°
60°
11
73°
60°
12
71°
57°
13
73°
59°
14
79°
55°
15
73°
56°
16
68°
59°
17
72°
58°
18
73°
58°
19
76°
59°
20
67°
59°
21
71°
56°
22
75°
58°
23
80°
58°
24
78°
59°
25
79°
60°
26
78°
61°
27
80°
58°
28
78°
57°
29
76°
58°
30
77°
52°
1
78°
57°
2
72°
58°
3
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Lorenzo
San Lorenzo's September 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 52° and 61°. The average high for September is 76° with an average low of 58°. 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 San Lorenzo. See also: October | November | December.
