S
M
T
W
T
F
S
30
91°
69°
31
89°
69°
1
90°
71°
2
91°
68°
3
86°
66°
4
87°
67°
5
86°
67°
6
89°
70°
7
90°
71°
8
90°
70°
9
89°
71°
10
89°
70°
11
88°
70°
12
88°
69°
13
89°
70°
14
88°
69°
15
85°
68°
16
87°
68°
17
87°
64°
18
83°
65°
19
85°
65°
20
86°
68°
21
87°
67°
22
82°
66°
23
86°
65°
24
84°
66°
25
84°
64°
26
84°
65°
27
80°
65°
28
Hist. Avg.
82°
62°
29
Hist. Avg.
82°
62°
30
Hist. Avg.
82°
61°
1
Hist. Avg.
81°
61°
2
Hist. Avg.
81°
60°
3
Hist. Avg.
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Florence
Florence's September 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 64° and 71°. The average high for September is 87° with an average low of 68°. 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.