S
M
T
W
T
F
S
30
92°
73°
31
92°
74°
1
90°
74°
2
91°
74°
3
86°
74°
4
90°
74°
5
90°
74°
6
90°
72°
7
86°
73°
8
88°
71°
9
90°
71°
10
91°
70°
11
90°
71°
12
90°
68°
13
91°
71°
14
89°
72°
15
90°
70°
16
89°
69°
17
87°
71°
18
86°
72°
19
88°
72°
20
86°
71°
21
86°
71°
22
87°
70°
23
87°
71°
24
86°
71°
25
86°
70°
26
87°
71°
27
87°
70°
28
88°
69°
29
83°
67°
30
84°
68°
1
83°
69°
2
83°
68°
3
84°
67°
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 83° to 91°, with overnight lows between 67° and 74°. The average high for September is 87° with an average low of 71°. 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.
