S
M
T
W
T
F
S
30
87°
69°
31
96°
68°
1
98°
75°
2
100°
76°
3
101°
75°
4
99°
76°
5
98°
74°
6
82°
69°
7
87°
64°
8
86°
60°
9
90°
62°
10
97°
71°
11
98°
74°
12
86°
73°
13
90°
75°
14
91°
70°
15
83°
63°
16
86°
59°
17
91°
67°
18
91°
71°
19
84°
67°
20
85°
69°
21
86°
68°
22
79°
69°
23
79°
66°
24
83°
64°
25
80°
60°
26
80°
61°
27
78°
57°
28
79°
60°
29
81°
58°
30
82°
62°
1
78°
57°
2
80°
62°
3
77°
63°
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 77° to 91°, with overnight lows between 57° and 71°. The average high for September is 82° with an average low of 63°. 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.