S
M
T
W
T
F
S
30
88°
70°
31
88°
70°
1
87°
69°
2
88°
70°
3
87°
69°
4
84°
66°
5
82°
65°
6
85°
65°
7
87°
68°
8
87°
69°
9
86°
69°
10
87°
68°
11
87°
69°
12
86°
69°
13
85°
68°
14
86°
64°
15
87°
67°
16
87°
65°
17
86°
66°
18
79°
60°
19
84°
57°
20
77°
58°
21
77°
58°
22
78°
59°
23
79°
61°
24
82°
62°
25
82°
58°
26
75°
56°
27
76°
58°
28
78°
60°
29
77°
62°
30
80°
58°
1
79°
61°
2
79°
61°
3
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lavonia
Lavonia's September 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 56° and 70°. The average high for September is 83° with an average low of 64°. 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 Lavonia. See also: October | November | December.