S
M
T
W
T
F
S
30
93°
65°
31
84°
59°
1
84°
62°
2
82°
67°
3
90°
66°
4
90°
69°
5
88°
65°
6
86°
61°
7
79°
61°
8
80°
58°
9
80°
55°
10
76°
51°
11
75°
51°
12
79°
57°
13
75°
58°
14
79°
57°
15
79°
56°
16
78°
55°
17
78°
57°
18
78°
55°
19
78°
54°
20
77°
55°
21
78°
56°
22
79°
56°
23
78°
55°
24
78°
55°
25
77°
54°
26
77°
54°
27
78°
53°
28
77°
53°
29
76°
52°
30
76°
54°
1
75°
54°
2
76°
53°
3
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lamberton
Lamberton's September 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 51° and 69°. The average high for September is 79° with an average low of 57°. 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 Lamberton. See also: October | November | December.