S
M
T
W
T
F
S
30
81°
58°
31
84°
50°
1
76°
50°
2
72°
58°
3
73°
60°
4
81°
50°
5
83°
47°
6
72°
49°
7
72°
53°
8
73°
56°
9
72°
51°
10
70°
55°
11
71°
52°
12
71°
47°
13
69°
45°
14
68°
47°
15
70°
53°
16
68°
56°
17
77°
55°
18
79°
53°
19
78°
51°
20
72°
48°
21
74°
47°
22
71°
44°
23
65°
41°
24
64°
43°
25
65°
43°
26
66°
41°
27
64°
39°
28
Hist. Avg.
67°
44°
29
Hist. Avg.
66°
44°
30
Hist. Avg.
66°
43°
1
Hist. Avg.
66°
43°
2
Hist. Avg.
65°
42°
3
Hist. Avg.
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lamberton
Lamberton's September 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 39° and 60°. The average high for September is 72° with an average low of 50°. 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.