S
M
T
W
T
F
S
30
70°
61°
31
75°
57°
1
72°
54°
2
68°
61°
3
75°
64°
4
72°
55°
5
73°
52°
6
77°
54°
7
75°
57°
8
63°
52°
9
66°
50°
10
66°
52°
11
70°
55°
12
72°
52°
13
72°
64°
14
75°
63°
15
73°
54°
16
68°
52°
17
70°
52°
18
N/A
19
68°
56°
20
67°
43°
21
71°
47°
22
73°
52°
23
70°
47°
24
69°
53°
25
70°
53°
26
69°
56°
27
70°
54°
28
67°
52°
29
66°
51°
30
65°
52°
1
66°
50°
2
67°
49°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in East Grinstead
East Grinstead's September 2026 forecast shows daily high temperatures ranging from 65° to 73°, with overnight lows between 43° and 56°. The average high for September is 68° 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 East Grinstead. See also: October | November | December.
