S
M
T
W
T
F
S
26
70°
43°
27
70°
45°
28
59°
46°
29
66°
43°
30
73°
45°
1
73°
48°
2
66°
46°
3
64°
50°
4
59°
50°
5
61°
46°
6
59°
43°
7
61°
39°
8
64°
48°
9
68°
45°
10
57°
43°
11
57°
32°
12
61°
34°
13
N/A
14
53°
39°
15
56°
37°
16
56°
45°
17
57°
43°
18
58°
48°
19
62°
50°
20
66°
50°
21
71°
53°
22
73°
54°
23
68°
49°
24
68°
50°
25
69°
51°
26
60°
49°
27
60°
46°
28
59°
44°
29
59°
45°
30
60°
47°
31
60°
50°
1
64°
52°
2
67°
52°
3
68°
51°
4
67°
52°
5
67°
52°
6
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Swindon
Swindon's May 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 37° and 54°. The average high for May is 63° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Swindon. See also: June | July | August.