S
M
T
W
T
F
S
30
94°
70°
31
95°
69°
1
94°
69°
2
93°
68°
3
93°
65°
4
92°
68°
5
93°
67°
6
91°
66°
7
92°
67°
8
89°
68°
9
91°
68°
10
91°
67°
11
90°
66°
12
90°
66°
13
84°
65°
14
84°
65°
15
85°
64°
16
85°
65°
17
84°
64°
18
83°
61°
19
83°
58°
20
82°
57°
21
81°
57°
22
82°
61°
23
84°
63°
24
85°
62°
25
87°
63°
26
86°
61°
27
86°
61°
28
84°
60°
29
86°
58°
30
79°
59°
1
Hist. Avg.
81°
56°
2
Hist. Avg.
81°
56°
3
Hist. Avg.
81°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint Matthews
Saint Matthews's September 2026 forecast shows daily high temperatures ranging from 79° to 95°, with overnight lows between 57° and 70°. The average high for September is 87° with an average low of 64°. 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 Saint Matthews. See also: October | November | December.