S
M
T
W
T
F
S
30
69°
50°
31
62°
55°
1
65°
54°
2
61°
53°
3
62°
51°
4
63°
52°
5
61°
48°
6
65°
47°
7
64°
48°
8
65°
47°
9
68°
49°
10
67°
50°
11
67°
47°
12
62°
51°
13
62°
47°
14
64°
50°
15
62°
50°
16
61°
48°
17
61°
44°
18
62°
44°
19
61°
49°
20
61°
46°
21
62°
43°
22
60°
43°
23
60°
44°
24
60°
44°
25
59°
46°
26
62°
44°
27
61°
49°
28
59°
48°
29
61°
47°
30
60°
48°
1
59°
47°
2
59°
41°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Florence
Florence's September 2026 forecast shows daily high temperatures ranging from 59° to 68°, with overnight lows between 41° and 55°. The average high for September is 62° with an average low of 48°. 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 Florence. See also: October | November | December.