S
M
T
W
T
F
S
30
86°
56°
31
80°
69°
1
93°
69°
2
77°
68°
3
90°
67°
4
86°
70°
5
81°
59°
6
79°
60°
7
78°
54°
8
81°
58°
9
85°
68°
10
79°
62°
11
79°
53°
12
78°
62°
13
77°
60°
14
76°
58°
15
77°
61°
16
75°
55°
17
74°
55°
18
69°
51°
19
72°
49°
20
69°
51°
21
70°
50°
22
68°
55°
23
70°
54°
24
70°
54°
25
71°
53°
26
74°
52°
27
71°
48°
28
72°
53°
29
73°
54°
30
74°
54°
1
73°
52°
2
71°
51°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lykens
Lykens's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 48° and 68°. The average high for September is 74° with an average low of 55°. 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 Lykens. See also: October | November | December.