S
M
T
W
T
F
S
30
79°
62°
31
83°
63°
1
82°
56°
2
79°
56°
3
79°
55°
4
80°
55°
5
78°
54°
6
79°
60°
7
83°
57°
8
79°
58°
9
82°
60°
10
83°
59°
11
81°
59°
12
82°
58°
13
82°
59°
14
81°
59°
15
83°
58°
16
82°
57°
17
79°
58°
18
79°
59°
19
80°
58°
20
80°
57°
21
79°
52°
22
79°
49°
23
74°
54°
24
71°
55°
25
Hist. Avg.
72°
51°
26
Hist. Avg.
71°
51°
27
Hist. Avg.
71°
50°
28
Hist. Avg.
70°
50°
29
Hist. Avg.
70°
50°
30
Hist. Avg.
70°
49°
1
Hist. Avg.
69°
49°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in New Lancaster
New Lancaster's September 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 49° and 63°. The average high for September is 80° 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 New Lancaster. See also: October | November | December.
