S
M
T
W
T
F
S
30
89°
74°
31
95°
71°
1
98°
73°
2
98°
74°
3
98°
73°
4
97°
72°
5
102°
72°
6
95°
70°
7
89°
72°
8
90°
69°
9
91°
68°
10
94°
72°
11
96°
74°
12
91°
73°
13
93°
74°
14
97°
71°
15
90°
75°
16
90°
68°
17
93°
68°
18
95°
72°
19
88°
70°
20
87°
69°
21
88°
68°
22
87°
70°
23
85°
65°
24
84°
65°
25
87°
63°
26
86°
61°
27
86°
63°
28
85°
60°
29
85°
63°
30
84°
61°
1
85°
61°
2
87°
66°
3
84°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. Andrews
St. Andrews's September 2026 forecast shows daily high temperatures ranging from 84° to 95°, with overnight lows between 60° and 72°. The average high for September is 87° with an average low of 65°. 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 St. Andrews. See also: October | November | December.