S
M
T
W
T
F
S
30
90°
69°
31
87°
70°
1
88°
69°
2
86°
65°
3
86°
64°
4
85°
64°
5
85°
65°
6
88°
66°
7
90°
69°
8
90°
69°
9
87°
68°
10
90°
68°
11
90°
67°
12
89°
68°
13
90°
69°
14
90°
67°
15
89°
67°
16
90°
65°
17
88°
66°
18
87°
66°
19
86°
65°
20
86°
64°
21
87°
65°
22
87°
64°
23
84°
64°
24
82°
64°
25
82°
63°
26
Hist. Avg.
82°
59°
27
Hist. Avg.
82°
58°
28
Hist. Avg.
82°
58°
29
Hist. Avg.
82°
58°
30
Hist. Avg.
81°
57°
1
Hist. Avg.
81°
57°
2
Hist. Avg.
80°
56°
3
Hist. Avg.
80°
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 82° to 90°, with overnight lows between 63° and 70°. The average high for September is 87° with an average low of 66°. 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.
