S
M
T
W
T
F
S
26
66°
45°
27
70°
46°
28
63°
46°
29
64°
46°
30
70°
52°
1
75°
46°
2
67°
52°
3
65°
50°
4
63°
48°
5
61°
45°
6
57°
44°
7
59°
45°
8
61°
47°
9
61°
47°
10
59°
45°
11
58°
46°
12
61°
46°
13
60°
44°
14
61°
45°
15
61°
48°
16
57°
46°
17
58°
44°
18
58°
42°
19
59°
46°
20
58°
43°
21
58°
42°
22
59°
43°
23
59°
44°
24
61°
48°
25
60°
49°
26
61°
49°
27
61°
47°
28
60°
44°
29
60°
44°
30
62°
46°
31
67°
48°
1
66°
47°
2
65°
51°
3
67°
49°
4
63°
48°
5
65°
49°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Guildford
Guildford's May 2026 forecast shows daily high temperatures ranging from 57° to 67°, with overnight lows between 42° and 52°. The average high for May is 61° with an average low of 46°. 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 Guildford. See also: June | July | August.