S
M
T
W
T
F
S
30
89°
66°
31
89°
67°
1
96°
71°
2
93°
72°
3
91°
71°
4
93°
70°
5
82°
67°
6
84°
62°
7
82°
59°
8
87°
55°
9
89°
60°
10
N/A
11
81°
67°
12
80°
70°
13
87°
66°
14
85°
62°
15
80°
62°
16
89°
65°
17
86°
65°
18
85°
58°
19
78°
57°
20
75°
52°
21
73°
54°
22
76°
54°
23
78°
53°
24
79°
55°
25
73°
54°
26
72°
55°
27
79°
58°
28
79°
58°
29
75°
55°
30
77°
58°
1
77°
57°
2
75°
54°
3
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Gainesville
Gainesville's September 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 52° and 70°. The average high for September is 79° with an average low of 58°. 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 Gainesville. See also: October | November | December.
