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°
62°
9
90°
67°
10
92°
68°
11
82°
63°
12
80°
68°
13
87°
66°
14
85°
65°
15
86°
65°
16
84°
62°
17
79°
60°
18
77°
55°
19
78°
54°
20
75°
53°
21
77°
56°
22
79°
60°
23
75°
60°
24
74°
59°
25
76°
59°
26
80°
58°
27
78°
58°
28
78°
59°
29
79°
59°
30
79°
58°
1
78°
58°
2
77°
57°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gainesville
Gainesville's September 2026 forecast shows daily high temperatures ranging from 74° to 92°, with overnight lows between 53° and 68°. The average high for September is 80° with an average low of 60°. 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.
