S
M
T
W
T
F
S
30
78°
63°
31
80°
65°
1
81°
60°
2
78°
59°
3
79°
61°
4
78°
60°
5
79°
60°
6
76°
58°
7
73°
56°
8
74°
58°
9
75°
50°
10
69°
54°
11
71°
54°
12
73°
54°
13
74°
55°
14
74°
55°
15
73°
54°
16
73°
53°
17
69°
53°
18
73°
54°
19
70°
54°
20
72°
53°
21
72°
54°
22
73°
54°
23
72°
51°
24
67°
50°
25
61°
48°
26
63°
50°
27
68°
50°
28
69°
49°
29
69°
50°
30
68°
50°
1
69°
49°
2
68°
50°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ayr
Ayr's September 2026 forecast shows daily high temperatures ranging from 61° to 81°, with overnight lows between 48° and 65°. The average high for September is 72° 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 Ayr. See also: October | November | December.