S
M
T
W
T
F
S
30
89°
68°
31
88°
67°
1
89°
68°
2
89°
65°
3
86°
64°
4
86°
65°
5
87°
67°
6
90°
68°
7
91°
68°
8
90°
67°
9
85°
70°
10
88°
70°
11
92°
71°
12
92°
70°
13
91°
71°
14
91°
70°
15
92°
70°
16
91°
69°
17
90°
65°
18
91°
67°
19
85°
69°
20
89°
67°
21
90°
59°
22
82°
58°
23
85°
65°
24
88°
66°
25
Hist. Avg.
83°
61°
26
Hist. Avg.
83°
61°
27
Hist. Avg.
82°
60°
28
Hist. Avg.
82°
60°
29
Hist. Avg.
82°
60°
30
Hist. Avg.
82°
59°
1
Hist. Avg.
81°
59°
2
Hist. Avg.
81°
59°
3
Hist. Avg.
81°
58°
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 92°, with overnight lows between 58° and 71°. The average high for September is 89° with an average low of 67°. 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.
