S
M
T
W
T
F
S
30
86°
71°
31
90°
72°
1
95°
70°
2
95°
70°
3
91°
70°
4
93°
70°
5
95°
70°
6
91°
66°
7
86°
68°
8
86°
66°
9
90°
64°
10
90°
72°
11
89°
72°
12
86°
71°
13
87°
70°
14
90°
71°
15
89°
66°
16
90°
67°
17
88°
68°
18
87°
67°
19
80°
63°
20
85°
65°
21
84°
64°
22
83°
64°
23
84°
62°
24
86°
66°
25
85°
63°
26
83°
61°
27
83°
64°
28
86°
65°
29
86°
65°
30
85°
64°
1
84°
65°
2
85°
63°
3
85°
63°
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 80° to 90°, with overnight lows between 61° and 72°. The average high for September is 86° 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 Lake City. See also: October | November | December.
