S
M
T
W
T
F
S
30
85°
59°
31
76°
70°
1
90°
72°
2
73°
69°
3
89°
76°
4
88°
74°
5
81°
66°
6
76°
62°
7
82°
59°
8
83°
56°
9
87°
66°
10
90°
73°
11
82°
62°
12
78°
57°
13
85°
76°
14
77°
57°
15
70°
55°
16
81°
56°
17
83°
66°
18
84°
68°
19
69°
65°
20
73°
65°
21
68°
62°
22
65°
60°
23
67°
58°
24
65°
57°
25
70°
58°
26
66°
56°
27
64°
59°
28
67°
60°
29
71°
57°
30
75°
60°
1
81°
61°
2
77°
60°
3
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Como
Lake Como's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 56° and 61°. The average high for September is 71° with an average low of 59°. 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 Lake Como. See also: October | November | December.