S
M
T
W
T
F
S
30
69°
49°
31
72°
50°
1
71°
52°
2
71°
53°
3
70°
53°
4
72°
52°
5
72°
53°
6
71°
53°
7
72°
52°
8
72°
53°
9
71°
50°
10
70°
47°
11
66°
46°
12
67°
48°
13
67°
50°
14
69°
51°
15
69°
50°
16
68°
50°
17
69°
46°
18
68°
48°
19
68°
49°
20
67°
47°
21
65°
44°
22
65°
47°
23
63°
48°
24
65°
46°
25
66°
47°
26
65°
48°
27
64°
47°
28
66°
48°
29
65°
46°
30
65°
46°
1
64°
48°
2
65°
48°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Harrow
South Harrow's September 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 44° and 53°. The average high for September is 68° 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 South Harrow. See also: October | November | December.
