S
M
T
W
T
F
S
30
71°
60°
31
N/A
1
66°
55°
2
67°
59°
3
69°
61°
4
66°
52°
5
67°
51°
6
69°
54°
7
66°
57°
8
65°
55°
9
64°
53°
10
63°
53°
11
61°
52°
12
62°
49°
13
63°
48°
14
63°
52°
15
62°
52°
16
60°
50°
17
62°
53°
18
63°
54°
19
63°
53°
20
62°
52°
21
63°
53°
22
63°
52°
23
62°
48°
24
59°
46°
25
60°
47°
26
60°
50°
27
61°
49°
28
62°
50°
29
61°
51°
30
62°
51°
1
62°
50°
2
61°
51°
3
61°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lampeter
Lampeter's September 2026 forecast shows daily high temperatures ranging from 59° to 69°, with overnight lows between 46° and 61°. The average high for September is 63° with an average low of 52°. 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 Lampeter. See also: October | November | December.