S
M
T
W
T
F
S
30
90°
72°
31
89°
72°
1
88°
71°
2
89°
72°
3
89°
72°
4
85°
71°
5
85°
71°
6
86°
68°
7
85°
66°
8
87°
68°
9
87°
71°
10
88°
71°
11
86°
70°
12
88°
71°
13
87°
71°
14
87°
66°
15
88°
69°
16
88°
68°
17
89°
69°
18
87°
66°
19
88°
65°
20
83°
67°
21
83°
65°
22
84°
64°
23
83°
64°
24
86°
67°
25
87°
67°
26
82°
64°
27
82°
64°
28
84°
65°
29
81°
66°
30
82°
66°
1
81°
65°
2
81°
66°
3
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake City
Lake City's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 64° and 72°. The average high for September is 86° 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 Lake City. See also: October | November | December.
