S
M
T
W
T
F
S
30
87°
65°
31
91°
68°
1
94°
69°
2
94°
70°
3
93°
68°
4
97°
70°
5
80°
66°
6
81°
62°
7
82°
58°
8
85°
57°
9
89°
62°
10
92°
69°
11
82°
70°
12
83°
69°
13
88°
69°
14
81°
60°
15
79°
50°
16
N/A
17
88°
68°
18
84°
63°
19
77°
63°
20
83°
65°
21
77°
61°
22
72°
62°
23
70°
57°
24
71°
56°
25
74°
53°
26
76°
54°
27
75°
54°
28
74°
56°
29
75°
51°
30
77°
55°
1
72°
55°
2
77°
56°
3
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Louisa
Louisa's September 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 51° and 68°. The average high for September is 76° with an average low of 58°. 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 Louisa. See also: October | November | December.