S
M
T
W
T
F
S
30
71°
54°
31
71°
54°
1
69°
53°
2
67°
50°
3
66°
49°
4
66°
49°
5
67°
48°
6
69°
52°
7
69°
50°
8
70°
52°
9
70°
54°
10
69°
52°
11
67°
52°
12
65°
51°
13
66°
50°
14
63°
46°
15
63°
46°
16
64°
47°
17
63°
46°
18
63°
50°
19
64°
47°
20
62°
45°
21
62°
45°
22
61°
51°
23
65°
50°
24
66°
49°
25
65°
45°
26
62°
45°
27
61°
48°
28
60°
49°
29
61°
48°
30
60°
44°
1
59°
46°
2
59°
43°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harbury
Harbury's September 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 43° and 54°. The average high for September is 65° with an average low of 49°. 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 Harbury. See also: October | November | December.