S
M
T
W
T
F
S
30
90°
70°
31
90°
70°
1
91°
70°
2
95°
70°
3
97°
73°
4
95°
72°
5
95°
72°
6
89°
71°
7
95°
72°
8
96°
67°
9
83°
54°
10
84°
62°
11
87°
60°
12
83°
58°
13
76°
56°
14
74°
55°
15
77°
57°
16
80°
61°
17
79°
59°
18
79°
60°
19
78°
53°
20
78°
58°
21
83°
59°
22
82°
60°
23
82°
60°
24
80°
59°
25
70°
58°
26
77°
58°
27
80°
57°
28
77°
58°
29
72°
54°
30
76°
46°
1
64°
45°
2
65°
42°
3
64°
41°
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 64° to 96°, with overnight lows between 41° and 72°. The average high for September is 79° 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 York. See also: October | November | December.