S
M
T
W
T
F
S
30
87°
71°
31
95°
68°
1
99°
74°
2
99°
75°
3
100°
74°
4
100°
77°
5
100°
74°
6
82°
70°
7
87°
65°
8
86°
62°
9
90°
62°
10
96°
71°
11
98°
73°
12
84°
72°
13
90°
69°
14
91°
63°
15
83°
57°
16
83°
59°
17
83°
64°
18
84°
65°
19
83°
66°
20
80°
63°
21
72°
56°
22
71°
55°
23
75°
57°
24
77°
54°
25
75°
58°
26
76°
56°
27
79°
60°
28
79°
58°
29
79°
59°
30
78°
59°
1
75°
55°
2
78°
60°
3
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Durham
Durham's September 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 54° and 72°. The average high for September is 80° with an average low of 60°. 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 Durham. See also: October | November | December.