S
M
T
W
T
F
S
30
91°
62°
31
93°
66°
1
95°
67°
2
97°
69°
3
98°
69°
4
99°
71°
5
95°
72°
6
86°
66°
7
86°
59°
8
90°
64°
9
93°
70°
10
82°
70°
11
82°
70°
12
82°
70°
13
90°
66°
14
81°
61°
15
95°
59°
16
95°
72°
17
93°
72°
18
91°
68°
19
91°
68°
20
91°
72°
21
88°
64°
22
64°
59°
23
70°
61°
24
68°
61°
25
N/A
26
N/A
27
73°
45°
28
77°
43°
29
79°
46°
30
86°
52°
1
88°
59°
2
73°
61°
3
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lancaster
Lancaster's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Lancaster. See also: October | November | December.
