S
M
T
W
T
F
S
30
94°
71°
31
96°
72°
1
96°
74°
2
97°
73°
3
98°
74°
4
95°
74°
5
95°
73°
6
99°
74°
7
97°
73°
8
92°
73°
9
90°
69°
10
91°
72°
11
90°
69°
12
91°
68°
13
91°
69°
14
90°
68°
15
88°
64°
16
87°
65°
17
88°
66°
18
88°
64°
19
84°
61°
20
84°
65°
21
88°
66°
22
88°
65°
23
87°
63°
24
87°
64°
25
86°
64°
26
86°
63°
27
85°
63°
28
86°
62°
29
85°
63°
30
85°
62°
1
84°
56°
2
81°
54°
3
75°
52°
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 75° to 97°, with overnight lows between 52° and 73°. 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 Raleigh. See also: October | November | December.