S
M
T
W
T
F
S
30
83°
57°
31
81°
54°
1
78°
54°
2
78°
55°
3
79°
56°
4
79°
55°
5
82°
57°
6
76°
62°
7
84°
60°
8
82°
54°
9
76°
54°
10
76°
53°
11
75°
53°
12
76°
55°
13
75°
54°
14
74°
53°
15
75°
57°
16
77°
56°
17
76°
51°
18
77°
52°
19
78°
58°
20
81°
56°
21
Hist. Avg.
80°
57°
22
Hist. Avg.
79°
56°
23
Hist. Avg.
79°
56°
24
Hist. Avg.
78°
55°
25
Hist. Avg.
78°
55°
26
Hist. Avg.
78°
55°
27
Hist. Avg.
77°
54°
28
Hist. Avg.
77°
54°
29
Hist. Avg.
76°
53°
30
Hist. Avg.
76°
53°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
75°
52°
3
Hist. Avg.
75°
52°
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 74° to 84°, with overnight lows between 51° and 62°. The average high for September is 78° with an average low of 55°. 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.