S
M
T
W
T
F
S
30
66°
55°
31
64°
52°
1
61°
55°
2
61°
55°
3
63°
57°
4
63°
55°
5
63°
52°
6
66°
55°
7
61°
52°
8
N/A
9
62°
51°
10
61°
51°
11
63°
53°
12
64°
48°
13
64°
50°
14
64°
56°
15
62°
50°
16
61°
48°
17
61°
47°
18
63°
49°
19
64°
50°
20
63°
50°
21
62°
51°
22
61°
51°
23
62°
50°
24
61°
48°
25
57°
47°
26
56°
46°
27
56°
48°
28
57°
44°
29
55°
43°
30
56°
48°
1
57°
46°
2
57°
47°
3
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Neilston
Neilston's September 2026 forecast shows daily high temperatures ranging from 55° to 64°, with overnight lows between 43° and 56°. The average high for September is 60° 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 Neilston. See also: October | November | December.