S
M
T
W
T
F
S
30
70°
50°
31
69°
54°
1
68°
54°
2
65°
53°
3
68°
52°
4
66°
50°
5
64°
49°
6
65°
53°
7
64°
51°
8
65°
50°
9
64°
51°
10
66°
48°
11
65°
48°
12
65°
49°
13
64°
51°
14
62°
50°
15
62°
47°
16
61°
46°
17
61°
45°
18
62°
47°
19
60°
48°
20
61°
47°
21
61°
46°
22
62°
47°
23
60°
49°
24
61°
48°
25
60°
47°
26
61°
48°
27
Hist. Avg.
59°
48°
28
Hist. Avg.
59°
48°
29
Hist. Avg.
59°
48°
30
Hist. Avg.
59°
48°
1
Hist. Avg.
58°
47°
2
Hist. Avg.
58°
47°
3
Hist. Avg.
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Swindon
Swindon's September 2026 forecast shows daily high temperatures ranging from 60° to 70°, with overnight lows between 45° and 54°. The average high for September is 64° 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 Swindon. See also: October | November | December.
