S
M
T
W
T
F
S
30
73°
59°
31
73°
57°
1
75°
52°
2
68°
61°
3
79°
66°
4
70°
55°
5
73°
52°
6
82°
55°
7
75°
59°
8
63°
52°
9
64°
52°
10
N/A
11
74°
53°
12
76°
63°
13
75°
59°
14
76°
62°
15
71°
50°
16
66°
55°
17
65°
53°
18
66°
51°
19
67°
52°
20
70°
52°
21
70°
53°
22
67°
54°
23
69°
50°
24
68°
49°
25
64°
47°
26
64°
47°
27
66°
50°
28
65°
44°
29
60°
42°
30
59°
43°
1
59°
47°
2
64°
48°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harefield
Harefield's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 42° and 63°. The average high for September is 67° with an average low of 51°. 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 Harefield. See also: October | November | December.
