S
M
T
W
T
F
S
30
87°
55°
31
80°
56°
1
81°
58°
2
85°
61°
3
85°
61°
4
84°
59°
5
81°
60°
6
85°
59°
7
84°
58°
8
83°
57°
9
83°
58°
10
82°
57°
11
82°
57°
12
80°
58°
13
84°
58°
14
83°
57°
15
Hist. Avg.
80°
58°
16
Hist. Avg.
80°
58°
17
Hist. Avg.
79°
57°
18
Hist. Avg.
79°
57°
19
Hist. Avg.
79°
57°
20
Hist. Avg.
78°
56°
21
Hist. Avg.
78°
56°
22
Hist. Avg.
78°
56°
23
Hist. Avg.
77°
55°
24
Hist. Avg.
77°
55°
25
Hist. Avg.
76°
54°
26
Hist. Avg.
76°
54°
27
Hist. Avg.
76°
54°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
75°
53°
30
Hist. Avg.
75°
52°
1
Hist. Avg.
74°
52°
2
Hist. Avg.
74°
52°
3
Hist. Avg.
73°
51°
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 80° to 87°, with overnight lows between 55° and 61°. The average high for September is 83° 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.