S
M
T
W
T
F
S
30
76°
62°
31
78°
61°
1
75°
59°
2
69°
58°
3
69°
59°
4
70°
59°
5
74°
61°
6
77°
62°
7
77°
62°
8
76°
61°
9
77°
61°
10
76°
60°
11
75°
60°
12
76°
59°
13
74°
60°
14
70°
47°
15
64°
48°
16
66°
51°
17
67°
53°
18
65°
47°
19
66°
51°
20
66°
55°
21
72°
55°
22
72°
54°
23
71°
47°
24
65°
46°
25
67°
50°
26
70°
54°
27
70°
51°
28
67°
44°
29
63°
39°
30
58°
44°
1
58°
52°
2
66°
48°
3
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in York
York's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 39° and 62°. The average high for September is 70° 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 York. See also: October | November | December.