S
M
T
W
T
F
S
30
78°
55°
31
77°
53°
1
76°
55°
2
78°
57°
3
77°
55°
4
78°
52°
5
78°
52°
6
77°
54°
7
76°
50°
8
77°
51°
9
75°
57°
10
76°
50°
11
75°
49°
12
75°
50°
13
76°
55°
14
79°
54°
15
80°
55°
16
81°
55°
17
81°
54°
18
80°
55°
19
80°
48°
20
78°
46°
21
71°
51°
22
72°
53°
23
75°
52°
24
76°
53°
25
77°
48°
26
75°
44°
27
73°
46°
28
68°
44°
29
67°
45°
30
67°
45°
1
68°
51°
2
Hist. Avg.
71°
48°
3
Hist. Avg.
71°
48°
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 67° to 81°, with overnight lows between 44° and 57°. The average high for September is 76° with an average low of 51°. 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.