S
M
T
W
T
F
S
30
92°
73°
31
92°
74°
1
90°
74°
2
91°
74°
3
87°
76°
4
91°
76°
5
90°
75°
6
93°
74°
7
90°
74°
8
91°
74°
9
92°
74°
10
93°
74°
11
91°
72°
12
90°
72°
13
91°
72°
14
94°
74°
15
92°
72°
16
89°
73°
17
92°
68°
18
91°
68°
19
90°
70°
20
88°
69°
21
88°
68°
22
89°
70°
23
89°
69°
24
86°
68°
25
87°
67°
26
87°
65°
27
84°
67°
28
81°
64°
29
83°
66°
30
84°
64°
1
85°
66°
2
87°
67°
3
87°
67°
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 81° to 92°, with overnight lows between 64° and 70°. The average high for September is 87° 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 Alachua. See also: October | November | December.