S
M
T
W
T
F
S
26
59°
39°
27
63°
41°
28
52°
39°
29
55°
34°
30
59°
34°
1
61°
34°
2
61°
46°
3
48°
45°
4
59°
41°
5
52°
39°
6
54°
37°
7
57°
43°
8
59°
45°
9
52°
37°
10
57°
34°
11
54°
37°
12
57°
45°
13
52°
39°
14
52°
39°
15
52°
34°
16
55°
32°
17
55°
41°
18
55°
43°
19
59°
48°
20
62°
50°
21
66°
52°
22
67°
54°
23
66°
52°
24
70°
54°
25
72°
51°
26
64°
50°
27
66°
51°
28
68°
52°
29
67°
49°
30
63°
47°
31
61°
48°
1
62°
47°
2
58°
45°
3
56°
48°
4
57°
46°
5
60°
48°
6
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Prestonpans
Prestonpans's May 2026 forecast shows daily high temperatures ranging from 56° to 72°, with overnight lows between 45° and 54°. The average high for May is 64° with an average low of 50°. 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 Prestonpans. See also: June | July | August.