S
M
T
W
T
F
S
30
88°
69°
31
86°
70°
1
88°
69°
2
88°
64°
3
85°
61°
4
83°
60°
5
82°
61°
6
84°
63°
7
85°
63°
8
84°
68°
9
88°
68°
10
84°
61°
11
83°
61°
12
83°
66°
13
84°
59°
14
86°
58°
15
81°
58°
16
80°
59°
17
81°
58°
18
82°
59°
19
83°
58°
20
85°
60°
21
86°
63°
22
86°
64°
23
79°
63°
24
83°
62°
25
83°
61°
26
85°
61°
27
85°
60°
28
84°
61°
29
85°
61°
30
85°
60°
1
84°
60°
2
85°
56°
3
84°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Raleigh
Raleigh's September 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 51° and 70°. The average high for September is 84° with an average low of 62°. 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 Raleigh. See also: October | November | December.