S
M
T
W
T
F
S
30
70°
67°
31
70°
66°
1
77°
68°
2
78°
68°
3
83°
67°
4
76°
63°
5
76°
62°
6
73°
62°
7
76°
60°
8
78°
61°
9
74°
69°
10
79°
60°
11
72°
55°
12
78°
59°
13
82°
59°
14
68°
54°
15
72°
56°
16
78°
63°
17
77°
61°
18
72°
57°
19
63°
54°
20
70°
58°
21
59°
51°
22
63°
48°
23
65°
53°
24
65°
51°
25
70°
52°
26
74°
54°
27
74°
56°
28
70°
56°
29
72°
60°
30
73°
61°
1
71°
60°
2
69°
57°
3
71°
56°
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 65° to 74°, with overnight lows between 51° and 61°. The average high for September is 70° with an average low of 56°. 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.