S
M
T
W
T
F
S
30
86°
59°
31
81°
58°
1
81°
58°
2
82°
59°
3
81°
63°
4
83°
58°
5
85°
58°
6
82°
57°
7
80°
56°
8
79°
57°
9
79°
56°
10
82°
60°
11
83°
61°
12
78°
61°
13
82°
61°
14
Hist. Avg.
81°
57°
15
Hist. Avg.
81°
57°
16
Hist. Avg.
80°
56°
17
Hist. Avg.
80°
56°
18
Hist. Avg.
80°
56°
19
Hist. Avg.
79°
55°
20
Hist. Avg.
79°
55°
21
Hist. Avg.
78°
54°
22
Hist. Avg.
78°
54°
23
Hist. Avg.
78°
54°
24
Hist. Avg.
77°
53°
25
Hist. Avg.
77°
53°
26
Hist. Avg.
77°
52°
27
Hist. Avg.
76°
52°
28
Hist. Avg.
76°
51°
29
Hist. Avg.
76°
51°
30
Hist. Avg.
75°
50°
1
Hist. Avg.
75°
50°
2
Hist. Avg.
75°
50°
3
Hist. Avg.
74°
49°
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 78° to 86°, with overnight lows between 56° and 63°. The average high for September is 82° with an average low of 59°. 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.