S
M
T
W
T
F
S
30
81°
56°
31
80°
57°
1
79°
62°
2
78°
63°
3
86°
63°
4
87°
62°
5
86°
59°
6
81°
55°
7
79°
58°
8
82°
54°
9
78°
53°
10
77°
53°
11
77°
54°
12
80°
53°
13
78°
59°
14
83°
56°
15
75°
52°
16
74°
56°
17
75°
54°
18
74°
57°
19
78°
49°
20
76°
52°
21
76°
50°
22
80°
49°
23
75°
49°
24
74°
50°
25
74°
53°
26
75°
54°
27
75°
55°
28
78°
55°
29
78°
46°
30
71°
49°
1
71°
55°
2
78°
53°
3
77°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dallastown
Dallastown's September 2026 forecast shows daily high temperatures ranging from 71° to 87°, with overnight lows between 46° and 63°. The average high for September is 78° with an average low of 54°. 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 Dallastown. See also: October | November | December.
