S
M
T
W
T
F
S
30
82°
61°
31
83°
62°
1
85°
66°
2
86°
60°
3
84°
58°
4
80°
60°
5
83°
60°
6
80°
59°
7
79°
58°
8
80°
59°
9
82°
63°
10
83°
61°
11
82°
57°
12
80°
55°
13
76°
57°
14
76°
57°
15
77°
58°
16
75°
57°
17
78°
61°
18
80°
61°
19
81°
60°
20
80°
62°
21
76°
60°
22
79°
61°
23
80°
60°
24
74°
59°
25
77°
61°
26
76°
62°
27
76°
60°
28
77°
59°
29
74°
57°
30
73°
54°
1
70°
53°
2
70°
55°
3
69°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bologna
Bologna's September 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 53° and 66°. The average high for September is 78° 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 Bologna. See also: October | November | December.