S
M
T
W
T
F
S
30
91°
73°
31
91°
73°
1
90°
72°
2
91°
73°
3
91°
72°
4
87°
72°
5
86°
71°
6
86°
69°
7
87°
67°
8
87°
70°
9
88°
72°
10
88°
72°
11
87°
71°
12
88°
71°
13
88°
70°
14
88°
67°
15
90°
69°
16
90°
68°
17
91°
69°
18
89°
67°
19
90°
66°
20
86°
67°
21
85°
65°
22
86°
64°
23
86°
64°
24
88°
66°
25
89°
67°
26
85°
64°
27
85°
63°
28
86°
64°
29
84°
65°
30
84°
66°
1
85°
65°
2
83°
65°
3
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Alachua
Alachua's September 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 63° and 73°. The average high for September is 87° with an average low of 68°. 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 Alachua. See also: October | November | December.